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GreenGro
GreenGro Granular Plus

GreenGro Granular Plus

5(48 ratings)

Best price now

$15.25at Monster GardensChecked 42 min ago

20% under what the other stores charge

Compared across 10 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $15.25 at Monster Gardens (checked Nov 12, 2026).
  • Checked at 10 stores.

Our take on the GreenGro Granular Plus

GreenGro Granular Plus is a 50 lb bucket of granular soil amendment built around mycorrhizae, beneficial bacteria, humic acid and kelp. It is mixed into living soil to support water and nutrient uptake and root health. The granular form is easy to broadcast and work in, and the bucket keeps a large quantity dry between uses. It suits gardeners amending beds, containers or raised beds who want a biological blend rather than a plain fertilizer. Against single-ingredient mycorrhizae products, it bundles four inputs in one application.

Best forGardeners building living soilAmending beds and raised beds before plantingContainer and transplant root establishmentGrowers who want one biological blend instead of several products
Pros
  • Combines mycorrhizae, beneficial bacteria, humic acid and kelp in one granular product
  • Granular form mixes evenly into soil and is simple to apply
  • Large 50 lb bucket covers a lot of ground and reseals between uses
  • Organic-based and listed as non-hazardous
  • Supports water and nutrient absorption and root development
Cons
  • Granular needs to be worked into soil, so it is slower than a liquid drench
  • Biological inputs are living; storage heat and moisture can reduce viability
  • No OMRI certification, which matters to certified organic growers
  • Results depend on soil conditions and are not instant

GreenGro Granular Plus prices at every store

  • Monster GardensNew

    In stock

    $15.25Checked 42 min ago
    Visit Monster Gardens
  • La Foresta OrchidsNew

    In stock

    $15.49Checked 42 min ago
    Visit La Foresta Orchids
  • BetterGrow HydroNew

    In stock

    $18.41Checked 42 min ago
    Visit BetterGrow Hydro
  • CannavistaNew

    In stock

    $18.46Checked 42 min ago
    Visit Cannavista
  • Home and Garden SupplyNew

    In stock

    $18.73Checked 42 min ago
    Visit Home and Garden Supply
  • Greenhouse MegastoreNew

    In stock

    $18.99Checked 42 min ago
    Visit Greenhouse Megastore
  • Green Thumb DepotNew

    In stock

    $19.71Checked 42 min ago
    Visit Green Thumb Depot
  • Happy HydroNew

    In stock

    $26.99Checked 42 min ago
    Visit Happy Hydro
  • Midwest Grow CoNew

    In stock

    $26.99Checked 42 min ago
    Visit Midwest Grow Co
  • Dealzer Grow Boxes & TentsNew

    In stock

    $31.77Checked 42 min ago
    Visit Dealzer Grow Boxes & Tents

GreenGro Granular Plus price history

Lowest price we've seen: $15.25 on Nov 12 at Monster Gardens. Tracked across 10 stores since Nov 12.

What reviewers say

  • 5 / 548 ratings

Ratings are very high, with buyers reporting healthier roots and better water retention after mixing it into beds. Most praise the granular format and the combined biological ingredients.

What people mention
  • Root healthPraisedBuyers say roots look stronger and plants establish faster after amending soil with it.
  • ApplicationPraisedThe granular form mixes evenly into beds and is easy to broadcast.
  • Results timingMixedSome say it takes weeks to show visible improvement, while others see changes sooner.
  • DustCriticisedPouring from the bucket creates dust that some find unpleasant.
  • CertificationCriticisedGrowers following organic certification note it is not OMRI listed.

About the GreenGro Granular Plus

GreenGro Granular Plus is a granular soil amendment for enriching living soil. It combines mycorrhizae, beneficial bacteria, humic acid and kelp. The formula is organic based.

Mix it into your soil. It is meant to allow maximum water and nutrient absorption for healthy plants, and it is used in the garden. It is not a hazardous material.

Type
Mycorrhizae, granular soil amendment
Form
Granular
Ingredients
Mycorrhizae, beneficial bacteria, humic acid, kelp
Soil type
Living soil
Application
Mix into soil
Use site
Garden
Organic
Organic based
Quantity
50 lb
Weight
50 lb
Container
50 lb bucket
Dimensions
9.88 in (depth)
Safety
Not a hazardous material

Specifications

Type
Mycorrhizae, Granular, Soil Amendment
Primary Use
Soil amendment
Use
Soil enrichment
Soil Type
Living soil
Form
Granular
Quantity
50 lb
Size
1 lb
Active Ingredients

Questions and answers

What is GreenGro Granular Plus used for?
It is a soil amendment mixed into living soil to add mycorrhizae, beneficial bacteria, humic acid and kelp. It supports water and nutrient absorption and root development in garden beds and containers.
How do I apply it?
Mix the granules into your soil before planting or around established plants. Work it into the top layer so the biological ingredients contact the root zone.
Is it a fertilizer?
No. It is a biological soil amendment, not a primary nutrient fertilizer. Use it alongside your normal feeding program.
Is it OMRI certified for organic growing?
It is described as organic based but is not OMRI certified. Certified organic growers should confirm with their certifier before use.
How should I store the bucket?
Keep it closed in a cool, dry place. The mycorrhizae and bacteria are living, so heat and moisture can reduce their viability over time.
Can I use it in containers?
Yes. Mix a small amount into potting soil when planting or repotting, following the label rate.
Where is the GreenGro Granular Plus cheapest?
At Monster Gardens, for $15.25, 20% under what the other stores charge, as of our latest check.
What do buyers say about the GreenGro Granular Plus?
Rated 5 out of 5 from 48 ratings.
Where can I buy the GreenGro Granular Plus?
10 stores we checked sell it, including Monster Gardens, La Foresta Orchids, BetterGrow Hydro, Cannavista, Home and Garden Supply.
Mycorrhizae, Beneficial bacteria, Humic acid, Kelp
Ingredients
Mycorrhizae, Beneficial bacteria, Humic acid, Kelp
Item Weight
50 lb
Dimensions
9.88 INH (depth)
Effect Highlights
Allow for maximum water and nutrient absorption
Texture
Granular
Container Size
50 lb
Container Type
Bucket
Packaging Size
50 lb
Packaging Type
Bucket
Organic
Organic Based
Eco-Friendly Certifications
No (OMRI certified)
Sustainability Free Of
Not hazardous material
Application Method
Mix it into your soil
Included Materials
Kelp, Beneficial bacteria, Humic acid, Mycorrhizae
Suitable Application Site
Garden
Suitable Plant Type
Healthy plants