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Greenleaf Nutrients

Mega Crop 1-Part Complete Base Nutrient - Hydroponic and Soil Fertilizer for Plants with Organics – Easy to Use for Max harvests - Makes 500+ Gallons

  • Based on 1,002 reviews
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Availability: In Stock.
Fulfilled by Greenleaf Nutrients
Arrives Monday, Oct 20
Order within 15 hours and 48 minutes
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Size: 4.4lb


Features

  • Pro's choice for growing Tomatoes, Buds, Fruits, Vegetables, Flowers and more! 4.4lb size makes about 450 Gallons of solution
  • 1-Part Complete Premium NPK Formula with Organics combines at least 7 products and supplements into one!
  • Maximum Plant Growth Weight and Harvest Quality Potential with minimum effort!
  • Multiple Forms Calcium and Magnesium, Sulfur, Trace Elements and Amino Acid chelates for Max absorption uptake.
  • Soluble Silica (Potassium Silicate source), Ascophyllum Nodosum Seaweed Kelp Extract, Fulvic Acid, Enzymes, 18 L-Amino Acids, B-Vitamins and Oligosaccharides

Description

Mega Crop is an all in one, complete plant nutrient designed from the ground up. It combines the full feeding schedule and multi-product supplement lines other companies suggest into 1 easy to use product. You get everything you need from start to finish - to grow the best quality plants. MEGA CROP uses advanced amino-acid Chelates, soluble Silica, Oligosaccharides, B-Vitamins, 18 L-Amino acids, and Kelp extract in addition to proprietary formula composition which ensures the product is soluble while allowing the plants to have maximum absorption in a wide variety of growing conditions and growing mediums. Legal Disclaimer: This product does NOT contain any pesticides, synthetic PGR’s, or and other EPA regulated ingredients. This product is fully compliant with all EPA rules and regulations. This product meets or exceeds all OMRI and state guidelines for heavy metals verified through independent lab testing, and is safe to be used on crops meant for human consumption. This is product is not currently registered, designed or intended for use as fertilizer in the states of Washington, Oregon or California. Please consult your state website (state department of agriculture or fertilizer) for guidance and list of appropriate and registered and approved fertilizers in your region. For questions regarding product pending compliance, or regulatory application process in your state, feel free to contact us!

Brand: Greenleaf Nutrients


Item Weight: 2 Kilograms


Item Form: Granules, Powder


Coverage: Large


Mixing ratio: 0.526 g per gallon


Brand: Greenleaf Nutrients


Item Weight: 2 Kilograms


Item Form: Granules, Powder


Coverage: Large


Mixing ratio: 0.526 g per gallon


Specific Uses For Product: Gardening, Agriculture


Target Species: Tomatoes, Fruits, Vegetables, Flowers


Manufacturer: Greenleaf Nutrients


Number of Items: 1


Unit Count: 70.5479 Ounce


Product Dimensions: 2 x 6 x 3 inches


Item Weight: 4.4 pounds


Country of Origin: USA


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Oct 20

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Love this stuff
Size: 0.9lb (400g)
It doesn’t mix too great without being agitated but it’s great, cheap and my plants look amazing. My plants are super strong and healthy. My plants grow fast from seedlings and are thick and robust. Speedy growth, easy to use.
Reviewed in the United States on February 4, 2025 by Kevdawg!
    • Wow!
Size: 0.9lb (400g)
The stuff is amazing! Yeah there were a few pebbles of product, nothing a mallet it couldn't squish down. Yes the packaging is tricky, I just put it in a mason jar. But it works really really well on herb!
Reviewed in the United States on July 31, 2025 by K.Lynn
    • Works amazing, and the price is great
Very easy to use, with my RO water the ph has stayed between 5.89 and 6.28 at all strengths from 1\8 to the full 6 grams in flower. This is my first grow since getting my script and it has been amazing. Harvest first plant in two days. I did what most people say not to and started multiple strains and only have an issue with one plant having a calmag problem which I blame on the pheno as I have two of the same ww and no other plant has shown the same problem. This appears to work amazingly as a stand alone with the majority of plants but I would recommend extra calmag on hand, a little extra silica never hurts either. This is by far cheaper than any premixed nutes and you can try a sample off their site first and just pay shipping (which is what I did.). The sample is plenty for a smaller run, I have 5 in flower and four more in veg and have about 3/4 of the sample left still...I can only imagine how long this 20 plus lb will last. Only thing I don't like is the nitrogen balls draw in moisture and start sticking together. I have it in an air tight container with silica packs and it still happens so I would recommend pulling out a smaller amount from the large bag and sealing the rest in a food grade bucket with silica packs, only open to refill smaller container and leave sealed the rest of the time. Hopefully that will avoid so much moisture. I read they are changing up their recipe so perhaps moisture and calmag will not be an issue anymore, who knows. Either way it is affordable, easy to use, and works amazing. If your new to growing research everything first (I spent 4 months scouring the net before ever making a purchase.)from strains, breeders, electrical requirements, nutrients, deficiencies, temperatures, lighting, fans, ducting, water ph, Rh, lst, hst, monster cropping, mainlining, reverse osmosis systems etc and you can avoid the majority of newb problems I have read about. I have a lot to learn still but didn't lose any plants and have a MUCH larger yield than I expected for a first run. ... show more
Reviewed in the United States on June 30, 2020 by Melissa&Drew
    • Excellent nutrients
Size: 4.4lb
I'm pleased with this purchase. Only time will tell if it's better than another brand. The ziplock will not close so make sure you have a gallon bag to store in.
Reviewed in the United States on July 23, 2025 by BB Cool
    • Made In China?
Size: 0.9lb (400g)
Review Image by Dennis S. Dennis S.
Review Image by Dennis S. Dennis S.
I’ve been using a few of Greenleaf Nutrients’ products for a little while now, and I will say that they do seem to work well in the garden. The bags are a good size and a decent value considering how much fertilizer you get. So far plants seem to like this 1-part fertilizer. When switching from another nutrient program, plants seem to react positively to these new nutrients. They continued to grow well. I think it should be known that these products are made in China as stated on the bottom, typed in very small letters. This may matter to some folks, and it could possibly mean that the makers aren’t as stringent as to what goes into the recipe. Who knows what quality ingredients are in these. If you are consuming your plants in the end, you may want to be careful what you feed them. This company makes it look like it’s made in either Canada or the US, but that’s a little misleading. I actually like the bags for packaging and they haven’t leaked for me. It mixes well and creates a dark color mixed solution for your plants. It doesn’t smell or anything. So it seems to work ok, just not sure what’s in it. Not sure if I’ll continue buying their products, they should be more up front with their customers. ... show more
Reviewed in the United States on October 16, 2024 by Dennis S. Dennis S.
    • God's gift to plants
Size: 0.9lb (400g)
Review Image by Nicole Worker Nicole Worker
Review Image by Nicole Worker Nicole Worker
Review Image by Nicole Worker Nicole Worker
my go to fertilizer. nothing compares to this stuff. easy 1 step feeding. just ask my crop!!!
Reviewed in the United States on March 24, 2025 by Nicole Worker Nicole Worker
    • Works
Size: 0.9lb (400g)
Works perfect
Reviewed in the United States on July 16, 2025 by Amazon Customer
    • Didn’t burn
Size: 4.4lb
Works great
Reviewed in the United States on August 2, 2025 by Bill

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