Best High-Nitrogen Liquid Lawn Fertilizer: Simple Lawn Solutions 28-0-0 (2026)

The pick: Simple Lawn Solutions Maximum Green 28-0-0

For most homeowners, Simple Lawn Solutions Maximum Green 28-0-0 is the easy choice. It pairs that 28 percent nitrogen with a quick and slow-release blend, threads onto a garden hose, and greens up any grass type fast. If you want a second brand to compare, PetraTools also makes a liquid 28-0-0 that delivers a similar high-nitrogen punch.

How to apply it without burning the lawn

High nitrogen is where a liquid is most likely to burn if you rush it, so a little care goes a long way. Apply to a dry, recently mowed lawn in the cool of the day, water it in lightly afterward, and never feed a dormant or drought-stressed lawn. Follow the label rate; with nitrogen, more is not better, and a double dose burns. To get the exact ounces for your lawn size, run it through the fertilizer calculator.

When to use it (and when not to)

A 28-0-0 shines during active growth in spring and summer, for a fast correction when the lawn is pale, or before an event when you want it looking its best. Skip it heading into dormancy, since late nitrogen on warm-season grass weakens cold tolerance, and skip it in peak heat or drought. If your lawn needs color but not more growth, reach for iron instead, covered in our best liquid iron guide.

Frequently asked questions

• What is the best high-nitrogen liquid lawn fertilizer? For most lawns, a 28-0-0 with a quick and slow-release blend like Simple Lawn Solutions Maximum Green. It greens up fast and keeps feeding for a couple of weeks.
• How fast does a 28-0-0 work? Usually a few days. The quick-release nitrogen is taken up through the leaf, so color shows well ahead of a granular feed.
• Can high-nitrogen fertilizer burn the lawn? Yes, if over-applied or used in heat. Apply to a dry lawn in the cool of the day, water in lightly, and follow the label rate.
• Should you use 28-0-0 in fall? Not on warm-season grass heading into dormancy. Late nitrogen reduces cold tolerance. Use it during active spring and summer growth.

For the full set of liquid options ranked by need, see the best liquid lawn fertilizer guide, and for the year-round picture, the complete fertilizing guide.