Standard Miracle Gro nutrients contain too much nitrogen and not enough of other nutrients for your cannabis flowering stage, and as a result of the time-released nutrients, you will notice that your leaves in the flowering stage will get nutrient burn and your buds just won’t grow as big as they could. Learn what you can do to make sure buds grow as big as possible!
Do not use “Miracle-Gro” soil or any soil that has “extended release” nutrients for growing cannabis. These types of soil will continue to release nitrogen to your plant roots for up to 6 months. This can cause deficiencies or burn your cannabis plants in the flowering/budding stage, reducing your overall yields. I have seen growers successively grow cannabis in Miracle Gro, but many of them struggled with nutrient problems in the flowering stage (like the following) even though plants were healthy throughout the vegetative stage.
Important: Do not use “Miracle Gro” soil or any soil that has “extended release” nutrients. These types of soil will continue to release nitrogen to your plant roots for up to 6 months. This can burn your cannabis plants in the flowering/budding stage and reduce your overall yields.
Miracle-Gro Slow Release Soil is Not Suited to Growing Marijuana!
What’s worse than the standard Miracle-Gro nutrients is the original Miracle-Gro soil. Standard Miracle-Gro soil has “time-released” nutrients which contain high levels of nitrogen. While this formula will work okay in the cannabis vegetative stage (the first stage of life), the nutrients will continue to be slowly released throughout the plant’s life including during the cannabis flowering stage, which is not good.
Many of us have grown up seeing Miracle-Gro being used in our homes, so we know that it works for ‘regular houseplants’. Cannabis is just a tough weed, so Miracle-Gro should be great for it, right?
Avoid Miracle-Gro Soil for Growing Weed!
The biggest problem with the standard Miracle-Gro nutrient formula is that it’s one formula for the entirety of the plant’s life cycle. Even if the standard Miracle-Gro plant food is decent for the first stage of your plant’s growth, it won’t be good for the budding/flowering phase. The ratio of nutrients your plants need changes drastically between seedling and full flower. Marijuana grows best with a nutrient system that accommodates their changing nutrient needs.
There’s nothing inherently wrong with Miracle-Gro nutrients, and if you’re willing to learn about nutrients, you can use the various different formulas and get a cannabis plant to grow. For example if you’re using regular soil, you could use the standard Miracle-Gro formula for vegetative, and their “bloom” version for the cannabis flowering stage.
Some growers do report using MiracleGro successfully, but it is the minority. Those who find success commonly use vastly watered down amounts of MiracleGro. All in all, it is just easier and safer to avoid using it altogether. You don’t want to ruin all of your hard work when you don’t have to.
What do you think of using MiracleGro to fertilize cannabis? Are you one of the few who have used it successfully? Do you have a better fertilizer not mentioned here? We’d love to hear about it in the comments below.
MiracleGro is used to help houseplants and gardens by providing additional nutrients that soil naturally loses over time. In doing so, MiracleGro boosts the growth rate of plants as it provides the material needed in the production of new cell structures.
What Can You Use Instead of MiracleGro?
The fertilizer contains mainly nitrogen, potassium, and phosphorus, and there are different options with different combinations of the three available.
The main issue with MiracleGro is it provides one formula of nutrients used throughout a plant’s life cycle. Weed plants go through several different stages through their growing cycle, from seedling to full flowering. In each of these stages, the plant needs a different combination of nutrients to ensure the best possible growth. MiracleGro doesn’t offer various combinations of nutrients; rather, it provides a one-size-fits-all approach. Initially, this may help your plant, but it won’t help for all stages of the plant grow-cycle.
Final Thoughts on Using MiracleGro When Growing Marijuana
Well, hold your horses for just a second there. MiracleGro might not be the helping hand you hope it to be. We will investigate the suitability of using MiracleGro with your cannabis plants throughout this article. Read on for all the information you need.
MiracleGro is probably the most famous plant food in the world. The fertilizer was first developed in the late 1940s by Horace Hagedorn and Otto Stern, who also came up with the distinctive packaging and name, which are still in use today. From here, it has become a household staple in the fertilizer market, beloved of horticulturalists around the world.
That said, the younger Hagedorn acknowledged a few months ago that Hawthorne was still figuring out how to serve Big Weed.
Today, Hagedorn and company—including his son Chris, who runs Hawthorne Gardening—sound like they want to take the business well beyond hardware-store hobbyists, and into the age of Big Weed. On the call, Hagedorn noted that the next legal markets are likely to have “fewer growers but larger ones.”
Hagedorn has been betting big on weed since 2013. That’s when, according to a colorful 2016 profile in Forbes, Hagedorn wandered into a Washington state garden store, where a shopkeeper told him that “everyone called him an idiot when he first started selling hydroponics equipment, but the stuff was flying off the shelves, with an average receipt of $400—straight cash.”
When one analyst implied that Scotts’ general consumer business hadn’t served large-scale professional landscapers as well as it had individual consumers in the past, Hagedorn (who is notably sharp-tongued) bristled.
“Dude, I have a ton of respect for you,” he said. “But I think that’s total bullshit.”
Scotts Miracle-Gro, the maker of home, lawn, and garden-care goods that traces its roots back to the 19th century, blamed disappointing quarterly earnings on the volatility of the cannabis market, on which it is increasingly dependent.
“There are a lot of Scotts people wearing Hawthorne shirts these days,” said CEO Jim Hagedorn, on a call with investors this week. That’s why, said Hagedorn, the company’s bottom line was hit hard by a slowdown in the California cannabis business, where sales were lower than expected following the state’s rocky first year of legal adult use.
“The greenhouse supply business, it’s a business we very much understand, and we’re the best in the world at,” said Hagedorn. “Hawthorne is going to be better than our [professional horticulture] business was at supplying a very unique specialized market, which is cannabis growers.”
Since 2016, annual sales growth at subsidiary Hawthorne Gardening—which owns dozens of brands selling lights, filtration systems, premium soil, containers, air filters, and more specialized supplies for hydroponic operations—has outpaced the group’s general lawn and garden business. For the fourth quarter, the parent company reported overall sales of $298 million, up 35% from the same quarter a year before. The Hawthorne unit was up a whopping 84% over that period, largely thanks to its acquisition of Sunlight Supply, yet another name in hydroponics that represented a near-literal doubling down in the weed business for Scotts Miracle-Gro.