Question 1

What is the best fertilizer for zoysia grass?

Accepted Answer

Base it on your soil test, but a slow-release nitrogen fertilizer with real potassium — something like a 15-0-15 — suits Zoysia well, especially the mid- and late-summer feedings. Potassium builds disease resistance and cold hardiness. Avoid heavy quick-release nitrogen, which pushes the growth that causes thatch.

Question 2

Does zoysia grass need fertilizer?

Accepted Answer

Yes, but less than most warm-season grasses. Zoysia needs only about 1 to 3 pounds of nitrogen per 1,000 square feet per year, fed lightly through the summer growing season. It is a slow, efficient grass, and overfeeding causes more problems — thatch and disease — than underfeeding, so err on the light side.

Question 3

Can you use 10-10-10 fertilizer on zoysia grass?

Accepted Answer

You can, but it is usually not the best choice. 10-10-10 is heavy in phosphorus, which most established NC lawns do not need, and light on the nitrogen Zoysia actually uses. A higher-nitrogen turf product with potassium, chosen from a soil test, feeds Zoysia better. Skip the extra phosphorus unless a soil test calls for it.

Question 4

Are coffee grounds good for Zoysia?

Accepted Answer

Coffee grounds add a little organic matter and a trace of nitrogen, but not enough to fertilize a lawn, and a thick layer can mat and repel water. They are fine tossed thinly into a compost pile, not spread as a Zoysia feeding. For real results, use a measured turf fertilizer guided by a soil test.

Question 5

How often should you fertilize Zoysia grass?

Accepted Answer

Two to three light feedings across the growing season is plenty for most Triangle lawns: once in late spring after full green-up, once in early summer, and a final feeding by mid-August. Each application is about a half to one pound of nitrogen per 1,000 square feet. Stop after August.

Question 6

What month should you fertilize Zoysia?

Accepted Answer

In North Carolina, feed from late May through mid-August only, after the lawn has fully greened up. Do not fertilize in early spring, when a late frost can burn tender growth, and never after August 15, which sets up winterkill and spring disease. Late May, late June or early July, and early August is the pattern.

Question 7

Why is my Zoysia grass turning yellow?

Accepted Answer

If it is not disease and you have already met your nitrogen for the season, yellowing is often an iron issue, common on high-pH or overwatered soil. Apply chelated iron or ferrous sulfate for color without pushing growth. Yellowing at green-up or in patches can also signal large patch — worth a professional look before you add fertilizer.

Question 8

Should I fertilize Zoysia in the fall?

Accepted Answer

No nitrogen in fall. Nitrogen after mid-August keeps Zoysia from hardening off for winter and invites large patch and winterkill. A potassium-only application four to six weeks before the first frost is fine and actually helps cold hardiness, but hold all nitrogen until the lawn greens up the following spring.

Fertilization and Soil

How to Fertilize Zoysia Grass (Don’t Overfeed)

How to Fertilize Tall Fescue in NC (Fall Nitrogen Is King)

How to Fertilize Bermuda Grass in NC (Schedule and Rates)

How to Fertilize a Crepe Myrtle Tree

What Lawn Care and Fertilization Cost in the Triangle

Soil pH and Lime: What Your North Carolina Lawn Actually Needs

How to Fertilize Your Lawn in North Carolina: The Complete Guide for Fescue and Bermuda

Top Dressing vs. Biochar for Lawns: What Each Does and What It Costs

How to Test Soil pH at Home With Aquarium Test Kits

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