Espoma Organic Bio-Tone Starter Plus Plant Food 4-3-3

5 out of 5 stars 1 Reviews | 1 Q&A

Espoma Organic Bio-Tone Starter Plus Plant Food 4-3-3

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Average Rating

5 out of 5 stars Rating: 5

1 Review | 1 Q&A

Product Overview

The Espoma Organic Bio-Tone Starter Plus Plant Food is an effective organic fertilizer that has high amounts of plant nutrients, good bacteria and fungi to help the plants digest it. This properly and precisely formulated mix encourages large root masses while helping plants establish fast. It has a high amount of ectomycorrhizal and endomycorrhizal, a fungi that forms a symbioses with the plant's roots and helping in retaining water and absorption of key minerals. An all natural supplement for plants, the bio-tone starter plus plant food gets all the good bacteria that they need to prevent transplant loss and help the plants establish bigger blooms and have deeper roots. It has a combination of the bacterias the plants need and the fungi that helps the gardeners to work in poor soils, even in new construction.

Features and Specs

Active Ingredient Nitrogen - 4.0% Available Phosphate - 3.0% Soluble Potash - 3.0% Calcium - 4.0% Total Magnesium - 1.0% Sulfur - 2.0%
For use in Flower Beds, Potting Mixes, Lawns, Trees & Shrubs
Application * See label for complete application instructions
Special Features Organic and Microbe enhanced fertilizer
Includes both Endo & Ecto Mycorrhizae
Shipping Weight 4.07 lbs
Manufacturer The Espoma Company (Mfg. Number: BTSP4)
UPC 050197038041


Non-Plant Food Ingredients:

Contains 936 colony forming units (CFU’s) per gram of 7 different species.
Ectomycorrhizal Fungi: 97,440 propagules per gram:
Endomycorrhizal Fungi: 2.64 propagules per gram:


Flower Beds
Mix 4 lbs. (12 cups) per 100 square feet into the top 4'' to 6'' of soil.

Place 1 tsp. per bulb in the hole prior to planting.

Potting Mixes
Mix 9 lbs. per cubic yard or 1 cup per cubic foot

New Lawns (seed or sod)
Apply 25 lbs. per 1,000 sq. ft. prior to seeding or installing sod.

Planting Trees & Shrubs
Mix thoroughly with backfill soil at the rates on packaging.

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  • 5 of 5 Stars


    By Mark on 05/11/2023

    You can sprout a popsicle stick in this product! Started using last year late. This year have started 6 new Hibiscus with it. Had roots out the bottom of a 1 gal container in 30 days. Have never seen plants thrive so. I am not the kind to review a product and say I applied it last night to a nearly dead whatever and this morning my whatever is 6' tall. This is a truly outstanding product, for me it is a MUST HAVE!!!

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Questions & Answers

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My dog ate some Espoma Organic Bio-Tone Starter Plus Plant Food 4-3-3 . Is it poisonous to dogs?

She's a lab and they eat everything. What is she attracted to in the mix? I do NOT let her eat it! Just want to know the risks.


This product should be kept out of reach of children and animals.  According the the SDS for Espoma Organic Bio-Tone Starter Plus Plant Food 4-3-3in case of ingestion: there are no known symptoms,  rinse mouth, contact physician if large amounts are ingested.  Please contact your vet for further information.

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