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GreenGro Premium Ultrafine Myco is a water-soluble mycorrhizal inoculant designed to enhance root development, improve nutrient uptake, and reduce transplant stress for indoor and outdoor plants. Its organic formula supports a wide range of soft-rooted plants, reduces watering needs, and protects roots from pathogens, making it an essential fertilizer for thriving, healthy gardens.


| ASIN | B007F86XXS |
| Best Sellers Rank | #412,407 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #5,623 in Garden Fertilizers |
| Brand | GreenGro |
| Customer Reviews | 4.2 4.2 out of 5 stars (22) |
| Item Form | Granules |
| Item Weight | 1 pounds |
| Item model number | MB-1001 |
| Liquid Volume | 1 Gallons |
| Manufacturer | GreenGro Biologicals |
| Number of Items | 1 |
| Package Dimensions | 4.7 x 4.7 x 3.9 inches |
| Specific Uses For Product | Plant Growth, Root Development, Soil Conditioning |
| UPC | 861045000017 |
| Unit Count | 16.0 Ounce |
C**H
Quick response/delivery via seller and a100% satisfied customer.
Using currently and getting great results.
E**Y
Great combination
I won't know how good it is until springbut I'm expecting great results. I'll update review if disappointed.
A**T
Awesome
Green gro is the best. I've used their products for years now. The myco powder is great for doing a soil drench right after transplant. Very affordable too.
J**S
reversed wilt overnight
This GreenGro Premium Ultrafine Myco Fertilizer really worked well for me. The powder is light and powdery. I tried to show the texture in my picture. It blended perfectly with water in my watering can, didn't even mix it in, I just added it first and used the hose to fill the can. Normally these things clump up, but this was completely mixed with no residue left in my can bottom. So, I thought it would take a couple weeks for me to leave a review, but I was so shocked at how well it worked, here I am after only one night of use! My little sweet peppers were brought in before a frost warning and they were really looking yellow and wilted. I like to keep the plants going in the winter in my sunroom. So I decided to try this fertilizer on the wilted plants as directed on the back. It's supposed to help the plants uptake the nutrients in the soil. The next evening I was really surprised to see the plants leaves were upright and strong! It also looks like the veins of some of the healthier leaves were greening up a little. If this is the result I can get after only one night on sick plants, I can't wait to see how much it will help my growing season in the summer! I highly recommend this fertilizer!
B**B
WARNING: This item has an SDS (SAFETY Data Sheet)
I am not yet sure if this item works and it is getting colder and less sunny, so I probably won't know for sure until next year. One of my string bean plants did grow a longer string bean, but that might be from the biochar I gave it about a month earlier. I was trying to wait to see if my plants would look any better in order to write a fair review, but it has been almost a month now, and the biochar I used previously only took 2 days to 1 week to have a noticeable effect. I went to the thegreengro website to ask how long it would take to have a noticeable effect and just by chance, I stumbled upon a Safety Data Sheet (SDS) for this product. I would STRONGLY ENCOURAGE you to read the sheet. You can go to their website, point to the "Resources" drop down heading (3rd item at the top) and select the "Program SDS Sheets." Then click on the "Premium Ultrafine Mycorrhizae SDS Sheet" link (first item on the right). (Sorry, we are not allowed to include web links in reviews.) For those of you who don't want to read it, part of it says the following: "H315 Causes skin irritation. H319 Causes serious eye irritation. H335 May cause respiratory irritation. PRECAUTIONARY STATEMENTS: PREVENTION: P261 Avoid breathing dust/fume/gas/mist/vapors/spray P264 Wash face, hands, and any exposed skin thoroughly after handling. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection." It has instructions on what to do if anything happens, how to store it, and how to dispose of it. I asked the company why they did NOT DISCLOSE THIS INFORMATION UPFRONT. There is nothing about the warning on the listing, there was NO SDS PAPER that came with this product with those warnings and NOTHING on the back of the product. I have received NO RESPONSE so far. If you have any medical issues related to this product, you can sue them UP THE WAZOO. I can tell you that when I first read the sheet, I started to panic. I kept reading the sheet over and over because I could only get through the first part because I was panicked. As I calmed down, I was able to read the entire sheet and go through in my mind what I had done when using this product. Luckily, I don't think I exposed myself too much. If you have already used this product, keep in mind that any respiratory issue might be DELAYED. In addition to the lack of disclosure, what I don't like is that there is no explanation for why this product causes the above issues. For example, I'm not sure why this is a skin irritant. Is it because it has fungus/bacteria in it? Or is there some chemical that is toxic? Regarding the eye and respiratory issues, that would be due to the fine particulate size, but I am guessing that it will also be due to the fact that there is fungus and bacteria in the product. (By the way, since the writing on the container is so small, if you want to see what is in this product, go to the same "Resources" drop down and select the "Product Sheets" option. Then click on the "Premium Ultrafine Product Sheet" link (4th item on the left). If you are going to get this item, please read the SDS thoroughly BEFORE BUYING AND USING. Some tips for using (other than what it says in the SDS): 1. Don't use when windy. 2. Use a spoon to scoop. 3. Put it into a tall container with a small mouth so that even if the powder puffs into the air, it won't likely reach the top and come out. 4. Don't use it if you have a cut on your hand even if you wear gloves...just in case. Since I already have this product, I am going to use it very carefully, but I most certainly do NOT recommend it due to the LACK OF DISCLOSURE of VERY SERIOUS information. I HATE that some people will do ANYTHING for MONEY. (And by the way, when I told my sister I was giving it 1 star, she questioned why it should even get a star!)
C**J
Cannot recommend
Everything about this product, along with other products I have received from this company shouts "green grab" The packaging is cheap and plasticky and nothing seems vibrant, or "organic" and the frequent misspellings and mispronunciations on the labels do little to assuage my concerns. I have nothing to back these claims, but my own experience . Feel free to change my opinion with facts, but I won't be using it on any of my prized greens
T**E
Quality brand
I’m pleasantly pleased with this brand and will definitely be ordering more from them in the future. I used this product on some rooted shrub cuttings that may or may not give me any results because they were planted late. The saplings were ordered early spring and didn’t arrive until late summer but by then I wasn’t available to get them all into the ground, so there’s a good chance they’re no good now. But crossing my fingers that this myco will find at least one root and get to work on it. It’s a very fine powder— you’re supposed to dip the roots into it until coated and then plant and water thoroughly. I’ve used another myco in the past with amazing results, but not all are created equal. I tried another that did absolutely nothing. But this one is applied directly to the roots, so I feel like the uptake will be a little different. It’s easy to use and not as messy as you’d expect. I’m going to update as soon as I get some results. But so far I’ve found this to be an excellent quality brand (I’ve got another product from GreenGro that is blowing my other products out of the water), so I’ve got high hopes! Will keep you posted.
Trustpilot
3 days ago
3 weeks ago