When Does Bermuda Grass Start Growing in Upstate SC?

Bermuda grass is the most common lawn grass in Upstate South Carolina. It goes brown in winter and green in summer. If you have it, you've probably wondered: when does it start growing again?

Here's the full seasonal timeline for bermuda grass in Upstate SC — and what it means for your mowing schedule.

When Does Bermuda Grass Start Growing?

Bermuda grass wakes up when the soil hits 65°F. In Upstate SC, that happens in mid-April to early May.

In a warm year, you'll see green coming through around April 15. In a cool spring, it's closer to May 1. Greenville, Spartanburg, and Anderson all follow a similar schedule.

By mid-May, most bermuda lawns need their first mow.

The Full Growing Season in Upstate SC

Here's how the year breaks down for bermuda grass:

January–March: Fully dormant. Brown, no growth, no mowing.

April: Green-up begins. First mow usually comes in mid-to-late April once grass reaches 2–3 inches.

May: Active growth. Mow every 7–10 days.

June: Fast growth. Mow every 5–7 days.

July and August: Peak growth. This is the hardest stretch. Bermuda grows fastest in the heat. Mow every 4–7 days to keep it healthy.

September: Growth slows. Back to mowing every 7–10 days.

October: Very slow growth. One or two mows max.

November: Dormant again. Season is done.

December: No mowing needed.

Why Peak Season Is the Hard Part

Most homeowners mow on a fixed schedule — every Saturday, for example. That works in spring. It falls apart in summer.

In July and August, bermuda can outgrow a weekly schedule. Let it go too long, then cut it short, and you remove more than a third of the blade at once. That stresses the grass. You'll see brown patches and thin spots.

The fix is to mow more often in summer and less in fall. But that requires checking your lawn every few days and adjusting on the fly. Most people don't do that — and their lawns show it.

How Many Times Will You Mow?

If you mow manually, here's a rough count for a full bermuda season in Upstate SC:

• April–May: 4–6 mows
• June: 4–5 mows
• July–August: 8–12 mows
• September–October: 3–5 mows

That's roughly 20–28 mowing sessions per season. Most of them fall in June, July, and August — the hottest, most humid weeks of the year.

When Does the Season End?

Bermuda goes dormant when soil temps drop below 65°F in the fall. In Upstate SC, that's usually mid-October to early November.

The last mow of the year is often timed around fall aeration or overseeding — a short, clean cut before the aerator comes through.

Trimly's season runs from mid-April through mid-November in most years.

How a Robot Mower Handles Bermuda Season

A Trimly robot mower runs on your lawn's schedule, not yours. Here's what that looks like:

April–May: The mower starts once soil temps rise. It runs every 7–10 days to match early-season growth.

June–August: The mower runs 4–6 days a week during peak growth. You don't touch it.

September–October: We dial back the schedule as growth slows. The mower handles the wind-down on its own.

November: We winterize and store the unit until spring.

Your lawn stays at the right height all season. No scalping. No missed weeks. No pushing a mower in 95°F heat.

Trimly Subscribe starts at $139 per month for yards up to 6,534 square feet. That covers the robot, installation, blade swaps, and all seasonal tune-ups. Most yards in Greenville, Simpsonville, and Anderson fall between $139 and $199 per month.

The Short Answer

Bermuda grass in Upstate SC starts growing in mid-to-late April. It peaks in July and August. It goes dormant by November.

During peak season, it needs mowing every 4–7 days to stay healthy. That's more than most people expect — and more than most people keep up with.

A robot mower handles it automatically. See what it costs for your yard →