Cannabis Guru Ed Rosenthal Shares His Tips For The Perfect Grow

ed rosenthal guru of ganja

Widely known as the “Guru of Ganja,” Ed Rosenthal is a leading cannabis horticulture authority, author, educator, and legalization pioneer.

He’s the most renowned cannabis cultivator in the world and has authored numerous books on the topic, including Marijuana Grower’s Handbook (which Oaksterdam University uses as their cultivation textbook to this day) as well as his newest book, Marijuana Garden Saver.

In this episode, Ed shares his advice to growers looking to achieve the perfect grow and discusses new and exciting discoveries in cultivation like creating cannabis compounds with yeast – a topic we recently discussed on the show with Kevin Chen of Hyasynth Bio.

Learn more at https://www.edrosenthal.com

Key Takeaways

  • Ed’s celebrated background in cannabis and how he’s seen the industry evolve throughout the years
  • The most common mistakes Ed sees among new growers
  • Ed’s thoughts on traditional lighting vs LEDs and what he believes to be the optimal lighting arrangement
  • How to design the best grow space from scratch
  • The best methods for trimming and manicuring commercial grows
  • Simple solutions to common problems Ed sees among new and seasoned cultivators alike, including how to avoid mold growth
  • The up and coming practice of growing cannabinoids in yeast
  • Ed’s insights surrounding the future of terpenes and different cannabinoids like CBN
  • Where Ed predicts cannabis trending in the years ahead
  • An inside look at Ed’s new book, Marijuana Garden Saver: A Field Guide to Identifying and Correcting Cannabis Problems

Read Full Transcript

Mathew: Hi, I'm Matthew Kind. Every Monday, look for a fresh new episode where I'll take you behind the scenes and interview the insiders that are shaping the rapidly-evolving cannabis industry. Learn more at cannainsider.com. That's cannainsider.com. Now, here's your program.

Hi, CannaInsiders. You are really going to enjoy today's interview with cannabis legend, Ed Rosenthal. My three biggest takeaways in this interview are, one, why it's always necessary to have small, experimental garden lest you become a grouch and stagnant grower stuck in your ways, which Ed warns about. Number two, Ed's unconventional approach to dealing with mold in cannabis cultivation. Number three, Ed's take on how we have lost the ritual of joint passing, but he also shares what we have gained in its place. And stick around to the end where Ed shares some stories of famous people he has smoked with. Enjoy the show. Ed Rosenthal's a well-known grower, educator, author, and consultant that has been a leader in the cannabis space for a long time and I'm pleased to welcome to the show today. Ed, welcome to CannaInsider.

Ed: I'm happy to be with you today.

Mathew: Give us a sense of geography. Where are you in the world today?

Ed: In Oakland, California.

Mathew: Okay. And I know you have a background, as I mentioned, as an author, a consultant, and so forth. Can you talk about what your day-to-day of life consists of these days?

Ed: A lot of it seems to be tied up into making both mechanical and business decision. So, because I consult for several growing companies that are putting up grow operations. And I spent a lot of my time reading and I have a few experiments going that are really small. They're usually under 32 square feet of space.

Mathew: Okay. And can you tell us a little bit about your experimental gardens and experiments that you have going on? That sounds interesting.

Ed: Well, one experiment is dealing with how closely plants can be placed to each other. So, the idea is when you're growing vegetatively, a lot of that growth isn't actually used. So, if you can eliminate that growth, then you'd have a faster turnaround and more of the plant's time would be devoted to actually flowering. A lot of the experiments are based on different parts of that theory.

Mathew: Okay. I mean, I know it sounds like a hypothesis, but how much time do you think it might save?

Ed: Most of the vegetative time, which could be a month or two months. See, when people say...people might say, "Oh, I get three pounds per light," or something like that. You've heard people say things like that. There's another question there. That's like a snapshot answer and it's showing what happens just at harvest. But as I see it, the real question is watts per gram. How many watts of total electricity do you use indoors? How many watts of electricity do you use to produce a gram of material? And so, you would start with a clone and the clone gets a certain amount of light in a certain amount of space for a certain amount of time. So, you figure that out and then the vegetative growth and so on. And so, that's a real figure of what your productivity is. It's not just the amount that you get at the end product, it's how much energy it took to get that.

Mathew: Yeah, that makes sense.

Ed: And outdoors, there are different ways of looking at it. If acreage isn't a problem, then labor might be the most expensive cost, as an example.

Mathew: Okay. And any other experiments you got going on?

Ed: Yeah. I have some experiments on UV lighting. And I've been doing those experiments for a number of years. And UV lighting produces stress response in plants, and the way that plants deal with that stress is by producing more THC and terpenes. So, I'm working on that.

Mathew: Okay. Interesting. For people that know your background, you have so many books that just go into just elaborate detail and answer a lot of questions that people have both in terms for beginners, intermediate, and even expert that can kind of correct some misunderstandings. So, I kind of wanna jump in here and just talk...can you just talk a little bit about when you talk to new growers or even intermediate growers, what kind of misunderstandings do they have that are kind of stubborn that you see they've held onto that just aren't valid?

Ed: Well, it's not so much with new growers, it's more with people have been growing for a while and they get into a certain method of growing and then they don't look at the advances that have occurred over a period of years. And so, they get stuck in whatever method they grew up with, so to speak. So, it's not so much that they're doing something wrong, but I see that it's like any other field, it's always advancing so that there's always new technology that you can use, even in a simple garden.

Mathew: Okay. So, they kinda hit like an evolutionary ceiling and don't go past it?

Ed: Well, you know, most farmers are pretty conservative. And the reason for that...I'm not talking about politically, I'm talking about in terms of their gardens. The reason for that is if you have something that's successful, you don't wanna trade it in for the unknown.

Mathew: Yeah, that's true.

Ed: So, unless the farmer has the time and room to do an experiment to see whether the new method works, they don't wanna move to a new method because even though they might not be as productive as they could be, at least they know that they going to have a crop, it's not going to fail.

Mathew: Okay. So, if let's say I'm a commercial grower and I have like a 5,000 square foot grow, in your mind, would it be ideal to dedicate how much square footage to just simply experiments so that you're not just stagnating but trying new things and seeing if you could have some breakthroughs?

Ed: Well, here's the thing. Whatever happens to plants on a small scale, if they get the same treatment, it will happen on a large scale. So, you don't have to devote that much space to it. So, most of my experiments are done on 4 by 8 tables, and that's 32 square feet, not too much. So, for instance, if you separate it from the rest of the garden a little bit, you could try out a new light and see how the new light work compared with the older lights, or you might try a different planting mix, or you might try a different variety. Ay of those experiments could be gone in 32 square feet, that's a 4 by 8 table as I said.

Mathew: That sounds fun. What are your thoughts about traditional lighting versus LEDs?

Ed: Well, LEDs are going to be the light or the light of the future until something better comes along because...and they produce more light in the range that the plants can use than ordinary bulbs do. So, they're more efficient. And eventually, people are going to be playing with the spectrums and get different effects on the plants using, in terms of light, [inaudible [00:08:06] of spectrums.

Mathew: All right. So, when you grow, what's kind of your optimal lighting arrangement then? What are you using right now?

Ed: Double-ended HPS and experimenting with both LEDs and CMH.

Mathew: Okay. So, for a commercial grows, what do you think the best way is if you were starting from scratch to set up a space for indoor growing? Is there any best practices you can share there?

Ed: Well, it depends what...People have different comfort levels with cultivation. So, it depends what the comfort level of a person is. But generally, you want a system that is repetitious, where people don't have to remember special things about this plant, or that plant, or the about this system has a quirk and that system has a quirk. So, if have a system that is totally functioning without any oddities or quirks, it's a lot easier to maintain it. And labor is a big consideration. So, the way that you grow your plants can cost you a lot of money or be inexpensive depending upon the method that you use.

So, for instance, I was involved in a garden where the grower wanted to have all the plants woven into this plastic netting. And so that every part of the plant...so the plants would basically be two dimensional rather than three dimensional and all the parts of the plant would [inaudible 00:09:50]. And they did a lot of clipping so that there'd be more buds. And actually, what happened was that plant, all of the buds got cut light, but because they had been clipped a lot, all of the buds were small and then they had to be unwoven from this plastic that the grower wanted to use. And so, in cutting the plastic, then they had to have labor going in to pick up the plastic from the field. So, I thought it was like sort of an inappropriate chess game, sort of, that the grower hadn't thought ahead about the problems this would have. And, in fact, the crop wasn't very good because of that.

Mathew: And what about handling trim in an efficient and optimal manner, the trimming process, what do you recommend there?

Ed: Well, the first thing is the only buds that have value is flowers. You know, sold as flowers are the top eight buds. So, if you have anything but eights buds, don't handle them as if they were going to. Unless they're being used for pre-rolls, they're probably going to be used for concentrate. So, the first step is to figure out what's gonna happen to whatever material you're using. Is it going to be eight-bud? If it's not bud, there's not much of a market for it as flower because there's such a big market for concentrates. And the amount of flour being used as a percentage of purchases is down into the 30s now. So, people are buying all kinds of concentrates, edibles, and drinks, and other ways of using cannabis. So, what I would do is take the eight-buds off and then any other buds might be used either directly as flower such as pre-rolls, remove that, and then handle everything else, just dry it crisp [SP] to be used for concentrates.

Mathew: Okay. Is there any problems...we talked about some problems that growers experiences and misunderstanding and stop, you know, they stop evolving, but is there any problems that you think that have like a very simple solution that we could just go over right now? Like in terms of just a quick hit like, "Oh yeah, this problem comes up all the time and people don't realize that it's just a matter of doing this."

Ed: Well, I could give people some preventative things. Let's try with that. So, let's say you're buying soil and let's say you're buying it in bulk and often that you're buying it directly from the producer. Well, you have to be careful about that soil. You have to test it. You have to see whether the soil's getting hot. If the soil's getting hot, it means it's not ripe. And it's still going through, you know, some kind of chemical decomposition, which it should go through. But you don't want it to be going through that when you're growing. So, when you're buying your soil, you have to check to make sure that it's ready to be used and you have to check the pH. So, if your pH of the soil is outside the level of between about 5.5 and 6.5, about that pH, if it's outside that pH, don't accept the soil.

Mathew: That's great. That's a great tip.

Ed: I mean, I was asked to help. I'm called in to solve problems after the other experts have been flummoxed. So, I'll give you an example of a disaster. These people got this soil, it wasn't ripe, and it had a pH of about 8.1 and it already had nutrients in. But the guy, the grower had these two experts and one expert was into teas. And he said, "Well, look, I'm testing it and it's deficient in this and it's deficient in that, so I'm giving it these teas to do that." And again, another guy was giving it some chemical fertilizers. So, I mean, it was still showing that it was deficient. And the reason why it was deficient is because it's not that the nutrients were there, but they were just locked up because of the pH of the soil.

So, I came in, "You have to bring the pH of the soil down and don't give them any more nutrients." But the experts kept on saying that it was low on certain things and kept on giving it nutrients. So then I'm bringing the pH down, and the way I was doing that is by using 5.1 water with nothing else in it, but just to get the pH down. So, the soil starts coming down and nutrients start becoming available. And there are too many nutrients because the nutrients...they were sneaking these nutrients in. So, I literally had to have the soil flushed. It was 2,800 containers of soil that had to be flushed.

Mathew: Wow. That's big. Yeah, it's a lot.

Ed: Twice. You know, you don't get it all out. So, that's an example. And it's experts working at cross purposes and only looking at, you know, if they don't take like a chess attitude towards it, they're gonna get boxed in by different things that they do, not realizing the consequences that those things are going to have down the road. So, for instance, people sometimes say, "Oh, I'm gonna make a really rich soil." So, they make a soil that's really rich and has a lot of nitrogen in it and then by the time that the plants are flowering, the nitrogen hasn't been used up and the nitrogen delays flowering because the plants still have that growth in them. So, that's why you wanna minimize nitrogen to an extent at the end. And you can't do that if you're using a lot of meals so that there's a nutrient leftover by the time the plants are going into flowering.

Mathew: Okay. So, do you flush it then? Is that what the appropriate response is? Is that what I'm hearing?

Ed: Well, I think that the appropriate method is you could have a soil that's rich in most nutrients but have moderate levels of nitrogen and then add the nitrogen to the soil through the water so that it's readily soluble. So, it will either be used up or you can flush it really easily.

Mathew: Okay. How about mold? We see mold and grows a lot. Do you usually attribute that to one or two causes or how do you think the best way to mitigate that is?

Ed: Well, first of all, it's in the air. So, especially if you're growing outdoors, but even in a greenhouse or indoors, you know, most of the molds are spread through the air and then the mold lands on a plant or is transferred to it by water or something, or touch. And if it has the right conditions, it's gonna grow. So, the right conditions for molds are acidic and moist. And usually, most molds thrive in the 60s or low 70s. So, for one thing, you wanna keep the stems and the stem area dry. Where the stem meets the roots, you wanna keep that area dry because often a lot of infections there.

The second thing is that if it's really moist out, you could spray the plants with something like potassium bicarbonate, and you can buy it in the store for a lot of money or you can get it on the internet in bulk for a lot cheaper. And the potassium bicarbonate changes the pH surface to an alkaline pH and that prevents mold germination. Milk does too, a 10% milk solution. I use powdered milk and I make it into a 10% solution or so let's say you put skim milk, you'd use 3.2 ounces of skim milk in a quart of water. That also helps and you can make a combination of the two, 1% potassium bicarbonate and 10% milk and that's an excellent solution for preventing mold.

Mathew: That's great. So, your book that's coming out, I think in the next couple of months, is about, you know, solving problems in the cannabis garden. We've just gone over a few. Is there any others that you think are kind of top of mind or should be top of mind for growers?

Ed: Don't over-water. You know, you could buy a wand that goes into the ground and you can see what the water levels are. You can use that for containers also. So, that's a good way of determining what's going on underneath the ground.

Mathew: Okay. There's a lot of interest in terpenes from consumers lately. You've been writing about terpenes for some time. Where do you think the evolution of terpenes is going in terms of what kind of consumer goods we'll see and what cannabis entrepreneurs will be doing?

Ed: Well, right now, people want [inaudible 00:20:02] that has a lot of terpenes in it, right? I mean, because of the odor, you know, the impression you get, inhaling, or something like that. But, you know, it's not...Each of these terpenes has different effects and to a great extent, those effects are known because terpenes or the oils that contain terpenes have been used in aromatherapy for thousands of years. So, there's pretty good knowledge of what the different terpenes are and what effects they have. So, I think that the terpenes and the cannabinoids, you can disassociate the two of them. And then reform with new formulations of terpenes depending on the effects that you want. So, ultimately, I see it as it's a combination of THC and maybe some CBD or other cannabinoids. And then the terpenes, rather than just growing it with the terpenes, you could combine the terpenes that you want for a specific effect with the THC and CBD. So, you might even use terpenes that aren't found in cannabis.

Let's say you wanted to make a sleep medicine that you might use cannabis as a base and some of the terpenes that are found in cannabis. And then you might have other natural terpenes from another plant which would also help in that. So, it might be a combination like that. So, think of this. You could go to a paint store and you have a chip of paint and they optically scan that chip of paint and then they have a series of pigments. And depending on the color, you know, there's a recipe, a pigment recipe, right, to give you the color that you want. So, let's say instead of color, we'd say we're choosing for effect and we have that same...not the pigments, but we have an array of terpenes to choose from. And depending on either the medical qualities that you want or the high that you want, the effect that you want, you would use different terpenes and it could be formulated for each individual even. Does that make sense?

Mathew: Yeah, that totally makes sense. Do you see CBN being used more for sleep solutions as we were talking about with terpenes, but as a cannabinoid, you see that start to be integrated more?

Ed: Yes. I think that...when I say minor cannabinoids, I mean that are found in minute quantities in cannabis. Even though in cannabis normally, you wouldn't get much of an effect from them because they're found in such small quantities, they're defining what qualities those cannabinoids have and those could always be made artificially. Ultimately, you know, almost all growing except for flower may be the equivalent of dead men walking.

Mathew: Oh, you mean growing from like yeast or something like that?

Ed: That's right. Right. Well, look, let's say you're a home grower, right? You could set up lights, set up your system, wait 90 days, and then take a drag on your joint, right? If you're a grower, right?

Mathew: Right.

Ed: But if you making cannabinoids using yeast, it's three to five days.

Mathew: Wow. Yeah. I can see why there's so much interest around it.

Ed: And there's no lights. And the food is a little sugar, you know? You're feeding it sugar and you get it. You could see how much cheaper and less time. Every part of it is more to me. It's cheaper, less time-consuming, takes less equipment. I think that eventually, instead of seeds, you'll be buying packets of yeast with different combinations of yeast in it to give you a broad, you know, whatever broad array like, "Oh, I'll take the equivalent of Blue Dream, you know, or Headband," or whatever.

Mathew: Yeah. That is a real breakthrough. And for people that don't know what we're talking about, I'll include a link in the show notes with a show we did with a scientist in Montreal that's actually doing this in the lab growing from yeast, if you've not heard about what Ed and I are talking about here.

Ed: I'll just do it in one paragraph. So, you know, with genetic engineering, you could take the genes that are associated with production of cannabinoids and remove them from the [inaudible [00:25:14] and put them to yeast. And yeast are an [inaudible [00:25:17] organism to put it in because they have a nucleus and they have a broad system of genetic proliferation. So, what happens is that the yeast, through that program to do this, start producing cannabinoids as they produce the alcohol. And that is already being used to a great extent in the production of medicines.

So, you know, people rail against genetic engineering. And I'm opposed to genetic engineering and putting it into field, you know, like taking some genetically-engineered genes and letting it go rampant in a field or something where weeds could pick it up or if it's a pesticide, insects would develop resistance to it quickly. So, I'm opposed to that. But I'm not opposed to genetic engineering in all cases. You know, like fixing human genes that plague people with terrible chronic diseases like muscular dystrophy or making medicines in a controlled space using genetically engineered material. And it's much cheaper to do that than to try to engineer and do it through chemistry rather than through biology. And so, the same thing with yeast and making cannabinoids. Once these are programmed to make cannabinoids, they do it for the cost of a cup of sugar.

Mathew: Yeah, that is crazy. I'm really interested to see how that develops and how quick that becomes a big part of the market.

Ed: So, all my writing then we'll become antiquated.

Mathew: No, there'll still be an artisanal level of growers out there, so.

Ed: Oh, how quaint.

Mathew: Have you been watching the rise and fall in different cannabis trends and fads? What trends do you see peaking and what trends do you see rising in the months and years ahead?

Ed: One thing that I've noticed is that the ritual of getting high in a communal way that is rolling the joint, passing a joint around, and people taking part in this as a ritual, that's passing. And the reason for that is there are new methods of getting high that people use more, such as ingestion, drinking it, and also vape pens. So that whole ritual of preparing the grass and everything comes down to taking a vape pen out of your pocket and taking a hit. So, that communalism part of it is going. And that's part of normalization because when it was a ritual, you were doing something that was outside of the ordinary, but now it's an ordinary thing to do. So, that's one big trend that's different.

Mathew: Yeah, yeah, that's true. We're social mammals and we like to sit around in a circle and do things together in groups, or at least, typically. So, you know, we're gaining something in the normalization, but losing something in that ritual.

Ed: Well, you know, in California, the first laws regarding easing of prohibition took place in 1975 when it became decriminalized and possession of under an ounce or cultivation for personal use became ticketable offenses. So, that's 45 years ago that that happened. So, if people don't become aware of marijuana until 15 years old. So, that would be 60 years ago now from...so, a person would have to be older than 60 to know the full effect of prohibition that didn't have the exemption for personal use. And then 25 years later, in California, we got medical marijuana. So, people could legally possess marijuana in California if they had a recommendation, and, you know, it was very easy to get a recommendation. So, in California then, we're talking about people younger than 45 never had a situation that they knew about where they couldn't legally get marijuana for medical reasons. So, the whole idea of this oppressed people has had a half a century, basically, to change. It's been a very gradual change. Now, in other states, it's really rapid. For instance, Oklahoma went from one of the most depressive states in terms of laws to open registration for commercial use.

Mathew: Yeah, really. Big 180 there.

Ed: So, that's a shock. But in California, it wasn't such a big thing. "Oh, it's legal now." "Oh, it wasn't legal?" But in Oklahoma, that must be a major change. Sudden change. California, it's been very gradual.

Mathew: Yeah. It does seem like a phase transition, like water turning to steam, like it's bubbling and bubbling and then just all of a sudden, everything's just happening at once.

Ed: Right. But it's not really that way. I mean, as I said, the first laws easing prohibition in California came about in 1975, so that's why it seems so normal to Californians, you know?

Mathew: Yeah, that's a good point. It does seem woven into the culture more in California for sure.

Ed: Yeah. Well, it's had that opportunity to happen for years and years.

Mathew: Ed, I'd like to ask a few personal development questions to help listeners get a better sense of who you are personally and your interests. Is there a book that has had a big impact on your life or way of thinking that you'd like to share?

Ed: Well, there were three books that I read in high school or early college that had a tremendous effect upon me and they were "All Quiet on the Western Front," "The Naked and the Dead" and "Catch 22."

Mathew: Okay, yeah.

Ed: And that made me hate war. And so, I thought, and many other people, especially people in the [inaudible 00:32:09], thought that America needed cannabis as a pacifying agent. See, I think that the United States is an alcoholic country. Now, we're not the only alcoholic country in the world, but what I've also noticed among business people in the United States where you see one or two drinks for lunch, and some for dinner, and some after-dinner drinks, by the time people are done with the day, they'd drank between half a pint and a pint of alcohol. And I think that alcoholism and war are very much associated because alcohol relieves people of nuances, everything becomes very black and white and people don't see...they lose perspective of alternatives rather than taking some physical action or something like that.

So, I thought that when the United States became cannabis-centric that there'd be less violence and less war, and that that was my goal. That's been my goal in trying to kind of cannabinize the nation is to get us into a much less war alliance stance. And I wanna give you one instance of how I think this could do that. You know, all these wars are going on in the Mid-East, like in Yemen, and Gaza, and Israel, and everything. Well, I think that the United States should use its air force and carpet bomb those countries with pre-rolls, lighters, and munchies with high protein so that you'd have these warriors going, "Oh, a joint just dropped here. You know, you know our enemies, we should go get them. Let's do it tomorrow." It would require constant carpet bombing.

Mathew: Yeah. That's a different dynamic for sure. That would be a great use of all the airplanes. Yeah. I think any president that ran on that as their platform might win. Like, "This is my only goal."

Ed: And, you know, alcohol causes so much damage to individuals. And I'm not talking about outlawing alcohol or anything, but I just wanna change the emphasis. So, I'll give you an example of how emphasis has changed in California. You go to a lot of people's houses, you can smoke pot, but you can't light a cigarette. Even in bars. "No, you can't smoke. Oh, a joint, that's okay." You know? So, I wanna help change people's attitudes in that way so that there should be more places we can use cannabis. And I'm not necessarily saying smoking cannabis because, you know, when you smoke cannabis, you're interfering with someone else. So, as an example, I said to my friend Dale Garinger, President of California and Hollow. You know, I go to the movies and get high all the time and he looks at me, he says, you know, "You shouldn't smoke in movies." I say, "Smoke? No, no, I just eat this cookie."

Mathew: Right. Right. Yeah.

Ed: Right?

Mathew: Yeah.

Ed: So, I'd like to see that kind of normalization where people can have the ability to get high rather than forced into going to a pub and drinking alcohol. I mean, if you wanna socialize in a lot of areas, the only place you socialize is a bar, or a pub, or something like that, and then alcohol gets involved. But what if you could go to a place where you just get high?

Mathew: Yeah, great points. It seems like we're slowly moving in that direction. We're seeing more social type licensing options and so forth.

Ed: Yes.

Mathew: So, you've consumed cannabis with a lot of different people. Is there one or two people that you thought were particularly interesting and worth mentioning?

Ed: One or two?

Mathew: If you can only name one or two.

Ed: I mean, if you're looking for famous people, I was recently sent a picture of Jack Herer, myself, and Willie Nelson.

Mathew: Oh, Wow. Yeah.

Ed: And then I got another one that was Jack Herer, myself, and Tommy.

Mathew: Tommy Chong, you mean?

Ed: Tommy Chong is one of the most interesting people. He's extremely intelligent. He's really a philosopher. When you read his books, they're really philosophy books. And he has a philosophy in life where he was able to take adversity and make it into humor and then to enrich himself with it. So, he's very interesting.

Mathew: Oh, that's great. Now, as you're doing consulting in Canada, Oakland, and Jamaica, is there anything you wanna share about your consulting practice before we close?

Ed: Well, it's very difficult to have me as a consultant because anybody who works with me has to take a leap of faith because I'm not gonna necessarily...I'm not selling the same box that everybody else is, so you have to take a leap of faith in it. You know, if you just want the same big box store, go to somebody who's really good at that, but if you want something where we're gonna really examine it and then make decisions based on that individual case and not just try to impose something on the space, then that's where my work comes in handy.

Mathew: Oh, that's good. Ed, you have a book coming out later in April called "The Marijuana Garden Saver: A Field Guide to Identifying and Correcting Cannabis Problems." I want everyone to look for that probably at Amazon and also at your website, edrosenthal.com. Ed's also on Facebook at facebook.com/edrosenthal. Instagram.com@/edrosenthal420420.

Ed: They can just put my name on Google and get everything.

Mathew: And it'll come up everywhere.

Ed: Everything will come up.

Mathew: You instantly appear.

Ed: Can I say one thing about that book?

Mathew: Yeah, please. Yes, go ahead.

Ed: I think just a couple of things. First of all, my philosophy is don't use any products whose contents you can't pronounce. So, the book is not a book about using the latest chemistry that kills nature. And the book gives many alternative solutions to whatever your problems are with the garden. So, I think people will find it very comfortable to work with and easy to work with and will help them with their garden.

Mathew: Yeah. And gosh, that seems like all your growers talking about is all the different problems they have so that your background and context here, I'm sure is gonna be very helpful. So, thanks for that, Ed.

Ed: Well, thank you. Thank you for having me on. It's been a pleasure.

Mathew: If you enjoyed the show today, please consider leaving us a review on iTunes, Stitcher, or whatever app you might be using to listen to the show. Every five-star review helps us to bring the best guest to you, learn more at cannainsider.com/itunes. What are the five disruptive trends that will impact the cannabis industry in the next five years? Find out with your free report at cannainsider.com/trends. Have a suggestion for an awesome guest on CannaInsider, simply send us an email at feedback@canainsider.com. We'd love to hear from you. Please do not take any information from CannaInsider or its guests as medical advice. Contact your licensed physician before taking cannabis or using it for medical treatments. Promotional consideration may be provided by select guests, advertisers, or companies featured in CannaInsider.

Lastly, the host or guests on CannaInsider may or may not invest in the companies or entrepreneurs profiled on the show. Please consult your licensed financial advisor before making any investment decisions. Final disclosure to see if you're still paying attention. This little whistle jingle you listening to will get stuck in your head for the rest of the day. Thanks for listening and look for another CannaInsider episode soon. Take care. Bye-bye.