16-0-0 Double Dark will do exactly what the name implies: make your lawn double dark green. It’s really that simple—green and more green.
Product Description:
Double Dark contains an impressive 6% iron—far more than most granular fertilizers. Iron drives that deep blue-green color, but nitrogen is still essential because the lawn must be growing in order to take in nutrients.
Double Dark includes 16% nitrogen, with one-quarter of it being slow-release. This gives you sustained color, steady stimulation of growth (not excessive top growth), and improved nutrient uptake. The nitrogen and iron work together to deliver the signature “Double Dark” lawn color.
All-Natural Bio-Nite™ in Every Bag!
Bio-Nite is a bio-solid filler added to every bag of Double Dark. It “smells like success”—literally. That scent indicates active organic matter feeding soil microbes. They love it, and your lawn will too.
Check out the video below for more information:
*Size options and coverage:
Application Information:
Double Dark Fertilizer Blend can be applied any time during the growing season for the following grasses:
| Coverage |
18 lb bag covers 6,000 sq ft 45 lb bag covers 15,000 sq ft |
| Application Details |
Apply at 3 lbs per 1,000 sq ft Reapply every 30–45 days |
| Water-In Instructions |
Apply to a dry lawn and water within 48 hours with 1/4" of irrigation or rainfall Sweep excess product off sidewalks and driveways to prevent staining |
Product Resources:
| Shipping Costs |
Included for most U.S. states NO P.O. Boxes $9.95 for CA, ID, MT, NV, OR, UT, and WA |
| State Restrictions |
Alaska (AK), Hawaii (HI), and Michigan (MI) |
| Stickers |
Yes, free stickers with this item |
| Typical Delivery Time |
4–7 business days |
| Product Type |
Granular |
| Cancel | Return | Exchange |
All sales are final; no cancellations, returns, or exchanges |
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