Turn your lawn a deep, dark blue-green with the N-Ext Double Dark Combo. This five-gallon liquid iron kit pairs 0-0-2 MicroGreene, a micronutrient fertilizer, with 7-0-0 GreeNeEfFect (Greene Effect), a nitrogen fertilizer with 6% iron, for fast green-up that lasts 4–6 weeks.
The combo includes one 2.5-gallon bottle of MicroGreene and one 2.5-gallon bottle of GreeNeEfFect, a larger size for bigger lawns or a full season of applications. Together, they deliver green through the shoots and more green through the roots. That’s what makes it “double dark.” Look for results in a few days, and watch your lawn get darker over the following weeks.
The N-Ext Double Dark Combo includes two 2.5-gallon bottles:
MicroGreene Product Label & Specs
GreeNe EfFect Product Label & Specs
The Double Dark Combo darkens your lawn from the top down and the bottom up.
GreeNeEfFect works through the leaf. Its blend of nitrogen and 6% iron is absorbed directly into the grass blades, so color shows up fast without forcing a flush of new growth.
MicroGreene works through the soil and roots. It supplies iron, manganese, zinc, and other micronutrients, along with humic acids and kelp, to help move deficiencies in the right direction and support longer-lasting color.
Used together, they give you quick green-up from the blades and deeper, longer-lasting color from the roots.
The Double Dark Combo can be used on all grass types, including:
Always read and follow the individual product label for approved uses, application rates, and application timing.
Coverage is based on the lowest application rate. Always use the application rate and coverage information listed on the current product label.
Shake well before using
What Is Included in the MicroGreene and Greene Effect 5-Gallon Combo?
The MicroGreene and Greene Effect 5-Gallon Combo Pack includes two 2.5-gallon bottles:
• 2.5 gallons of MicroGreene
• 2.5 gallons Greene Effect
MicroGreene provides micronutrients (including iron), humic materials, and sea kelp, while Greene Effect combines nitrogen and iron to support faster lawn green-up. The double dose of iron gives your lawn a deep, dark green color.
What Are the Benefits of Using MicroGreene and Greene Effect Together?
MicroGreene is designed to help address micronutrient deficiencies and support overall turf health. Greene Effect provides nitrogen and 6% iron, which can promote a deeper green color without creating a significant growth push. Together, they support green color through the grass blades and improved nutrition through the root zone.
How Do You Apply the MicroGreene and Greene Effect 5-Gallon Combo Pack?
Fill a pump or battery sprayer halfway with water first. Add Greene Effect at 8 ounces per gallon of spray mix and MicroGreene at 3–6 ounces per gallon. Agitate the mixture, then fill the sprayer with the remaining water. Apply one gallon of spray mix per 1,000 square feet, coating the grass blades evenly. Lightly water in after application.
How Long Does It Take to See Results From the MicroGreene and Greene Effect Combo?
You may begin to see greener turf within a few days. The lawn can continue to darken over the following weeks, with the color boost typically lasting approximately four to six weeks when applied as directed. The combo can be applied about once per month between regular fertilizer applications during the growing season. Always follow the product labels for application rates and timing.
| Shipping |
Shipping calculated at checkout No P.O. Boxes Not available in Oregon, California, Alaska or Hawaii |
| Delivery Time | 4–7 business days |
| Returns | All sales are final; no cancellations, returns, or exchanges. |
| Customer Support | Contact Yard Mastery Support |
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