---
product_id: 1180982
title: "Espoma Organic Bio-Tone Starter Plus 4-3-3 Natural & Organic Starter Plant Food with Both Endo & Ecto Mycorrhizae; 4 lb. Bag; The Ultimate Starter Fertilizer - Pack of 1"
brand: "espoma"
price: "€ 83.66"
currency: EUR
in_stock: true
category: "Espoma"
url: https://www.desertcart.be/products/1180982-espoma-organic-bio-tone-starter-plus-4-3-3-natural
store_origin: BE
region: Belgium
---

# 4-3-3 NPK for balanced growth Dual endo & ecto mycorrhizae boost roots Made in USA, trusted since 1929 Espoma Organic Bio-Tone Starter Plus 4-3-3 Natural & Organic Starter Plant Food with Both Endo & Ecto Mycorrhizae; 4 lb. Bag; The Ultimate Starter Fertilizer - Pack of 1

**Brand:** espoma
**Price:** € 83.66
**Availability:** ✅ In Stock

## Summary

> 🌿 Grow smarter, not harder — the organic starter your garden deserves!

## Quick Answers

- **What is this?** Espoma Organic Bio-Tone Starter Plus 4-3-3 Natural & Organic Starter Plant Food with Both Endo & Ecto Mycorrhizae; 4 lb. Bag; The Ultimate Starter Fertilizer - Pack of 1 by espoma
- **How much does it cost?** € 83.66 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/1180982-espoma-organic-bio-tone-starter-plus-4-3-3-natural)

## Best For

- espoma enthusiasts

## Why This Product

- Trusted espoma brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Symbiotic Root Boost:** Enhanced with both endo & ecto mycorrhizae to supercharge nutrient uptake and root development.
- • **Ready-to-Use Convenience:** No mixing needed—just blend with soil at planting for instant root zone activation.
- • **Certified Organic Confidence:** Registered Organic Input Material, ideal for eco-conscious gardeners who demand purity and performance.
- • **Legacy of Natural Excellence:** From Espoma, the pioneer in organic gardening since 1929, ensuring quality you can trust.
- • **All-in-One Organic Powerhouse:** Perfectly formulated 4-3-3 NPK with 5% calcium for vibrant, healthy plants from day one.

## Overview

Espoma Organic Bio-Tone Starter Plus is a premium 4 lb. natural and organic plant food featuring a balanced 4-3-3 fertilizer formula enriched with 5% calcium and dual endo & ecto mycorrhizae. Designed for use at planting or transplanting, it promotes robust root growth and nutrient absorption. Certified for organic gardening and made in the USA by a trusted leader since 1929, this ready-to-use granule fertilizer ensures your plants get the ultimate start for thriving growth.

## Description

Buy Espoma Organic Bio-Tone Starter Plus 4-3-3 Natural & Organic Starter Plant Food with Both Endo & Ecto Mycorrhizae; 4 lb. Bag; The Ultimate Starter Fertilizer - Pack of 1: Fertilizers & Plant Food - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- FOR EVERYTHING YOU PLANT: Use Bio-tone Starter Plus fertilizer when planting / transplanting all plants.
- CONTAINS: Bio-tone Starter Plus is a rich blend of the finest natural & organic ingredients enhanced with both endo & ecto mycorrhizae and our exclusive Bio-tone formula; 4-3-3 Fertilizer analysis with 5% calcium. Bio-tone Starter Plus contains no sludges or fillers.
- WHEN / HOW TO USE: Use Bio-tone Starter Plus fertilizer when planting / transplanting. Mix thoroughly with soil used to backfill the planting hole so the Bio-tone Starter Plus is in the plant root zone. It is ready to use and requires no mixing.
- FOR ORGANIC GARDENING: Bio-tone Starter Plus is approved for organic gardening; It is a registered Organic Input Material meaning it meets all requirements for organic production.
- MADE IN THE USA: Product of the Espoma Company. The leader in natural organics since 1929.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000J3AG2K |
| Best Sellers Rank | #17,054 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #500 in Garden Fertilizers #1,222 in Plants, Seeds & Bulbs |
| Brand Name | Espoma |
| Coverage | Medium |
| Customer Reviews | 4.8 4.8 out of 5 stars (2,557) |
| Global Trade Identification Number | 00050197038041, 00077349922027, 00885351226336 |
| Included Components | Grass Seed, Plant Fertilizer |
| Item Form | Granules |
| Item Type Name | OUTDOOR RECREATION PRODUCT |
| Item Weight | 4 pounds |
| Liquid Volume | 4 liters |
| Manufacturer | Espoma |
| Mixing Ratio | 9 pounds per cubic yard or 1 cup per cubic foot |
| Model Number | ESPOMA - BTSP4 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | ESPOMA - BTSP4 |
| Specific Uses For Product | Gardening |
| Target Species | plants |
| UPC | 077349922027 617407746358 050197038041 885351226336 050197035101 |
| Warranty Description | Warranty |

## Product Details

- **Brand:** Espoma
- **Item Form:** Granules
- **Item Weight:** 4 pounds
- **Liquid Volume:** 4 liters
- **Specific Uses For Product:** Gardening

## Images

![Espoma Organic Bio-Tone Starter Plus 4-3-3 Natural & Organic Starter Plant Food with Both Endo & Ecto Mycorrhizae; 4 lb. Bag; The Ultimate Starter Fertilizer - Pack of 1 - Image 1](https://m.media-amazon.com/images/I/81WueoU66BL.jpg)

## Available Options

This product comes in different **Number Of Items** options.

## Questions & Answers

**Q: what are the N-P-K values**
A: 4-3-3

**Q: Can I use this in potted plants?**
A: That's all I use it on.   I've used it for years and it's been great.    I use it when I get plants from wherever ( nursery, Lowes, Home Depot, etc.) and want to put them into pots.   I use the Bio-Tone starter to be sure they get good root growth and to make sure the transfer from little nursery containers to a bigger pot are successful.

**Q: I used this for the first time last night.   It smelled like organic fertilizer.   Today, I went to use it and it smells like ammonia.   Is this OK?**
A: Organic fertilizers can sometimes continue to compost if kept in a very warm place.  The nitrogen heats it up further causing the ammonia smell.  If the bag doesn't feel too warm, this is not a big deal, but I recommend you store it in a cool place to maintain the natural N-P-K balance and micro-organism makeup.

**Q: Can this be used in a potting mix (vermiculite and coconut choir) for starting seeds? Or will it cause burn?**
A: Yes, definitely use it for potting mix- it promotes root growth like nothing I've ever used before and the strong odor comes from the mycorrhizae fungus- not from anything that would burn the seeds.

## Frequently Bought Together

- Espoma Organic Bio-Tone Starter Plus 4-3-3 Natural & Organic Starter Plant Food with Both Endo & Ecto Mycorrhizae; 4 lb. Bag; The Ultimate Starter Fertilizer - Pack of 1
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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-10-21*