Sigma 2-4-2 Bio 2X

Professional root-zone organic fertilizer, delivered to your home. Sigma 2-4-2 Bio is our gentlest grade, low in nitrogen and rich in phosphate, calcium and extra biology.

• Phosphate for roots and blooms: 4% phosphate, the nutrient plants use for roots, flowering and fruit set
• Extra biology: 10% humate and a richer microbe dose than our standard grades
• Calcium rich: 10% calcium, a nutrient plants use in every cell
• Very gentle: low nitrogen and all-organic, gentle on seedlings, transplants and new sod

Commonly used on: new plantings and transplants, flowering beds, tomatoes and peppers.

OMRI Listed for organic use
Sigma Organic Input material

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

Guaranteed Analysis

Total Nitrogen (N) 2.0%
0.68% Water Soluble Nitrogen
1.32% Water Insoluble Nitrogen
Available Phosphate (P2O5) 4.0%
Soluble Potash (K2O) 2.0%
Calcium (Ca) 10.0%
Magnesium (Mg) 0.6%
Iron (Fe) 0.15%
Derived from composted poultry manure and feather meal.

Also contains: 10% humate; 4.2 million Bacillus bacteria, 9.4 mycorrhizal propagules and 716 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.