Sigma 4-2-2 Bio

Professional organic fertilizer for new lawns and soil building, delivered to your home. Sigma 4-2-2 Bio is a low phosphate, slow release organic grade with built-in soil biology.

• Built for establishment: a long-time favorite for seeding and new sod
• Built-in biology: beneficial microbes in every granule, plus 5% humate
• Better soil: organic matter supports better water movement in the soil
• Slow release: all-organic nitrogen with low burn risk when applied at label rates

Commonly used on: new lawns, sod, bare spots, and soil that needs rebuilding.

OMRI Listed for organic use
Sigma Organic Input material

How much to use

• Lawns: Apply 19-25 lbs per 1,000 sq ft.
• Flower beds, shrubs and gardens: Apply 49-124 lbs per 1,000 sq ft.

Always confirm rates against the product label.

Guaranteed Analysis

Total Nitrogen (N) 4.0%
0.64% Water Soluble Nitrogen
3.36% Water Insoluble Nitrogen
Available Phosphate (P2O5) 2.0%
Soluble Potash (K2O) 2.0%
Calcium (Ca) 9.0%
Iron (Fe) 0.2%
Derived from composted poultry manure and feather meal.

Also contains: 5% humate; 2.8 million Bacillus bacteria, 6.1 mycorrhizal propagules and 480 thousand Trichoderma per lb.

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

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)

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.