Description
Professional Bridge lawn food for fast green-up, delivered to your home. Sigma 15-5-10 Bio is our highest-analysis Bridge grade, with quick-acting nitrogen plus organic matter and biology for the soil.
- Fast green-up: 15% nitrogen for lawns coming out of winter or heavy use
- Complete feed: phosphate and 10% potash in every granule
- Feeds the soil too: organic matter, humic acids and Sigma biology alongside the conventional nutrients
- Multicolor blend: organic base and conventional granules mixed in every bag
Commonly used on: lawns, overseeding, high-traffic yards and landscape beds.
What is Bridge?
Bridge products pair fast, dependable conventional nitrogen with Sigma's organic base, beneficial microbes and soil carbon in the same bag. You get the quick green color of a traditional lawn food, while the biology and organic matter work on the soil underneath. It is the easy middle step between a conventional program and a fully organic one.
How much to use: application rates are on the product label. Open it with the Product label button below.
Guaranteed Analysis
Total Nitrogen (N) 15.0%
Available Phosphate (P2O5) 5.0%
Soluble Potash (K2O) 10.0%
Calcium (Ca) 1.5%
Iron (Fe) 0.5%
Also contains: 3% humic acids from leonardite; 0.42 million beneficial bacteria, 0.91 mycorrhizal propagules and 72 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.
- 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.