Unlike most of Florida we get genuine hard freezes here, and every few winters one is severe enough to do real damage. What happens next matters, because the most common response makes things worse.
What a freeze does to warm-season turf
Centipede, St. Augustine, Bermuda and Zoysia all go dormant here, and dormancy is protective. A dormant lawn turning brown after a freeze is normal rather than damaged.
Damage happens where the lawn had been pushed into tender growth going into the cold, usually because it was fertilized too late in the season, or where an unusually severe freeze reaches the crowns and rhizomes. St. Augustine is the least cold-hardy of the four and shows the most damage in a bad year.
Do not cut it back immediately
This is the important part. Frost-damaged foliage on turf and on landscape plants insulates the living tissue underneath it. Cutting it off exposes the crowns to the next freeze, and there is nearly always a next freeze.
Wait until the danger of further hard frost has passed before removing damaged material. On landscape plants that means waiting for new growth to show you where the living tissue actually starts, which is frequently lower or higher than it looks.
Assessing turf damage in spring
- Wait for full green-up before judging anything. Centipede comes out of dormancy late, and every year somebody writes off a lawn that was simply behind.
- Once the lawn is actively growing, look at what has not greened. Scratch a stolon with a thumbnail; green tissue underneath means it is alive.
- Areas that are genuinely dead will be obvious by late spring and not before.
- Do not fertilize heavily to force recovery. A stressed lawn cannot use it, and pushing growth on a damaged root system makes it worse.
- Plug or sod genuinely dead areas once the lawn is growing well and can knit into the repair.
Landscape plants
Tender ornamentals take the worst of it. Wait for new growth before pruning, then cut back to living tissue. Water before a predicted freeze rather than after, because moist soil holds and releases more heat than dry soil.
Covering plants helps if the cover reaches the ground and traps ground heat. A cover draped over foliage without reaching the soil does very little, and plastic touching leaves conducts cold straight into them.
Preventing damage next year
- Stop nitrogen early enough in autumn that no tender growth is going into the first freeze. This is the single biggest controllable factor.
- Keep the lawn at a normal height into winter rather than scalping it, because leaf material insulates the crowns.
- Irrigate ahead of a freeze rather than during it.
- Accept dormancy. A brown lawn in January is a healthy lawn in January.
If you want somebody who mows these yards every week to look at yours and give you a straight answer, get in touch. We work out of Monticello across Jefferson, Leon and Madison counties and up over the South Georgia line.