Sigma 5-3-2 Bio

Professional organic garden fertilizer with built-in biology, delivered to your home. Sigma 5-3-2 Bio pairs organic nitrogen with humic acids and beneficial microbes in every granule.

• Nitrogen for green growth: 5% organic nitrogen, part quick and part slow release
• Humic acids: 3% humic acids from leonardite to help hold nutrients near the roots
• Living soil: beneficial bacteria, mycorrhizal fungi and Trichoderma ride on every granule, along with humic acids that feed them
• Gentle around roots: all-organic ingredients with low burn risk when applied at label rates

Commonly used on: new lawns and beds, vegetable gardens, landscape plantings, and soil that needs rebuilding.

OMRI Listed for organic use
Sigma Organic Input material
CDFA organic input listed

How much to use: application rates are on the product label. Open it with the Product label button below.

Guaranteed Analysis

Total Nitrogen (N) 5.0%
1.2% Water Soluble Nitrogen
3.8% Water Insoluble Nitrogen
Available Phosphate (P2O5) 3.0%
Soluble Potash (K2O) 2.0%
Calcium (Ca) 7.0%
Iron (Fe) 0.1%
Derived from processed poultry manure, bone meal, feather meal and sulfate of potash.

Also contains: 3% humic acids from leonardite; 2.8 million beneficial bacteria, 6.1 mycorrhizal propagules and 480 thousand Trichoderma per lb.

50 lb bag. Delivered pricing: one price with delivery included, lower 48 states.

Safe use around children and pets

• Read and follow all label directions before use.
• After spreading, water the product in or work it into the soil. Do not leave granules piled on the surface.
• Natural organic ingredients can smell attractive to dogs. Water in thoroughly and do not let pets dig in or eat from treated areas or an open bag.
• Keep children and pets off the treated area until the product has been watered in and the surface is dry.
• Sweep any granules off sidewalks, driveways and patios back onto the lawn or bed.
• Store the bag closed, in a cool, dry place, out of reach of children and pets.
• Not for human or animal consumption. Wash hands after handling.
• If swallowed, rinse the mouth and drink water. Call a doctor, or a veterinarian for a pet, if any symptoms appear.
• Keep product out of storm drains, ditches and waterways.

Label and safety documents

Product labelSafety Data Sheet (SDS)Product data sheet

The product label is the official guide for how much to use, where and when. Read it before every use.

Always read and follow label directions. Product information on this page is general guidance; results vary with soil, weather, plant type and application. For advice on your own lawn or garden, including soil testing, contact your local Cooperative Extension office. Find your state's Extension service.