Laying Sod in September and October: A North Texas Timing Guide

Why Timing Matters More in Fall Than in Spring

Warm-season sod roots when the soil is warm. Air temperature is what you feel; soil temperature is what the grass responds to. Bermuda, Zoysia and St Augustine all put down new roots while the soil at 4 inches deep stays above about 65 degrees. In Fannin County that soil temperature usually holds until mid-October, then drops off fast.

New sod needs roughly four to six weeks of active root growth before the first hard freeze to hold through winter. Our average first freeze runs from about November 10 to November 20. Count backward and you get a simple rule: sod laid by the end of September is safe, sod laid in the first half of October is usually fine, and sod laid after about October 20 is a gamble.

What Happens If You Miss the Window

Sod laid too late does not die right away. It sits there, looks green for a few weeks, then goes dormant with almost no root attachment. Winter rain and freeze-thaw cycles lift the pieces. In February you find seams gapped open, corners curled, and pieces you can pick up like carpet squares. Some of it comes back in May and some of it does not.

If you are past the window, the better move is to wait for spring. Prepare the ground now, keep it clean of winter weeds, and lay sod in April when soil temperature climbs back above 65. That costs a lot less than replacing a failed fall install.

Variety Matters at This Time of Year

Not every grass roots at the same speed:

• Celebration and Bermuda 419 root fastest. These are the safest choices for a late installation.
• Iron Cutter is also a Bermuda and behaves about the same.
• Zeon Zoysia is the slowest to knit in. Give it the earliest date you can. September is much better than October.
• St Augustine is the most cold-sensitive of the group. It needs full root establishment before the first freeze, so we do not recommend laying it after the first week of October.

Fall Watering Is Not Summer Watering

The most common mistake on a September install is running the same schedule you would in July. Evaporation drops sharply once nights cool, and soggy sod in cool weather invites brown patch.

For a September or October install:

• Days 1 through 7: water twice a day, about 15 minutes per zone, morning and early afternoon. The soil under the sod should stay damp 3 to 4 inches down.
• Days 8 through 14: once a day, in the morning.
• Days 15 through 21: every other day.
• After three weeks: once or twice a week, about 1 inch total.

Check it with a screwdriver. If it pushes 4 inches into the soil under light pressure, you have enough water. If you have to lean on it, you do not.

Feeding and the First Mow

Put down a starter fertilizer high in phosphorus at installation. Skip the heavy nitrogen. Pushing top growth in October gives you tender blades that freeze and roots that never develop. A potassium application in early October does more for winter hardiness than nitrogen ever will.

The first mow comes when the sod has rooted enough that a tugged corner does not lift, usually 14 to 21 days. Mow Bermuda at 1 to 1.5 inches, Zoysia at 1.5 to 2 inches, and St Augustine at 3 to 3.5 inches. Make sure the ground is firm enough to carry a mower without rutting.

Planning the Order

Measure length by width, break odd shapes into rectangles, and add 5 to 10 percent for cuts and waste. Our minimum order is 500 square feet, and pricing improves above 5,000 square feet. Delivery is included in the per-square-foot price, so the number you see is the number you pay. A 3,000 square foot yard in Celebration at $0.58 per square foot comes to $1,740 delivered.

Order so the pallets arrive the morning you plan to lay them. Sod cut in warm weather and left stacked will heat in the middle of the pallet and yellow within 24 to 36 hours. Have the ground graded, tilled and raked before the truck shows up.

Call (813) 465-4099 or email info@sodlot.com to check availability and get a delivery date. We confirm every order by phone.