Available in 4 sizes

4OZ, 1LB, 5LB, 20LB

Develop root systems and improve nutrient cycling

Down To Earth’s Root Growth Enhancer is a super fine all-purpose combination of Endomycorrhizal and Ectomycorrhizal Fungi plus humic acids to benefit a diverse selection of plants, trees and shrubs. These microscopic soil organisms are critical for developing expansive root systems, improving nutrient cycling and soil structure and protecting against a variety of plant stresses including drought and environmental extremes. This easy to use, water-soluble formula will aid in dramatically increasing root growth for more vigorous plants and trees. DTE Soluble Root Growth Enhancer can be watered in to porous media in gardens, seed beds or propagation trays or applied directly to seeds, roots and cuttings when transplanting.


40% Humic Acids derived from Leonardite.

Endomycorrhizal fungi: Glomus intraradices, G. mosseae, G. aggregatum, G. etunicatum –53 prop/gm each (96,000 prop/lb. total)

Ectomycorrhizal fungi: Rhizopogon villosullus, R. luteolus, R. amylopogon, R. fulvigleba – 23,000 prop/gm each; Pisolithus tinctorius – 220,000 prop/gm; Scleroderma cepa, S. citrinum – 15,000 prop/gm each (155 million prop/lb. total)

59.9% Inert Ingredients

Listed by the Organic Materials Review Institute for use in organic production.

The objective is to ensure physical contact between the roots and the inoculant.

Vegetable Gardens & Flower Beds:

Mix ½ tsp. per gallon of water for use as a soil drench for established plants. Water in newly planted seedlings and transplants at the same rate or saturate root balls just before planting.

Seed Soak:

Mix 1/4 tsp. per gallon of water. Soak tomato seeds 72 hours, cucurbits 48 hours, potatoes 12 hours and most other seeds 24 hours before planting.

Trees, Shrubs & Vines:

Mix 4 oz. in 50 gallons of water. For new plantings, saturate root balls or cuttings just before backfilling. For established plants, drench or inject into surrounding soil to encourage deep root inoculation.

Store this product between 40 F and 85 F degrees. Avoid temperatures in excess of 140 degrees F.

CAUTION: Keep out of reach of children and pets. Do not ingest or inhale. Avoid contact with eyes or skin. Wash hands after use.

Purchase Soluble Root Growth Enhancer

Check out our Where to Buy page