Fall is one of the most important lawn care seasons in Georgetown TX. What you do in September and October directly determines how strong your lawn comes back in spring.
Most Georgetown TX homeowners focus their lawn care attention on spring and summer — understandably, since that's when the lawn is most visible and when the growth is most dramatic.
But fall — specifically September and October in Georgetown — is actually one of the most strategically important periods of the entire lawn care year. The decisions you make in these two months directly affect how strongly your lawn emerges in spring and how it handles next summer's heat.
Here's what to do and why it matters.
September: The Recovery and Preparation Window
Georgetown's September is the transition month. The brutal July–August heat that stressed warm-season grasses begins to moderate, typically dropping average highs from 100°F to the upper 80s. This moderation allows stressed grass to recover and, if you act quickly, to build energy reserves before dormancy.
Fall Fertilization: Don't Skip This
If you do only one thing in September, make it a fall fertilization application. This is arguably the single most important fertilizer application of the year for Georgetown Bermuda and Zoysia lawns.
Here's why: warm-season grasses use fall as a loading period — they're storing carbohydrates in their root systems to fuel the spring green-up. A well-fertilized Georgetown lawn in September stores significantly more energy than an unfertilized one, which directly translates to:
- Faster spring green-up (thicker Bermuda in late February vs. mid-March)
- Stronger growth through the first spring mowing season
- Better resistance to the occasional Georgetown spring drought
What to apply: A balanced fertilizer (10-10-10 or similar) or a product with moderate nitrogen and elevated potassium. Potassium specifically helps harden grass tissue against Georgetown's occasional hard freezes and improves drought tolerance.
When: Apply in September, ideally before soil temperatures drop below 70°F. Once Bermuda starts to slow its growth (typically late October), the ability to absorb and use fertilizer drops significantly.
Fall Pre-Emergent Application
Georgetown's fall and winter bring their own set of weeds — henbit, chickweed, annual bluegrass, and clover are the most common cool-season annuals that germinate when soil temperatures drop below 70°F.
A fall pre-emergent application (typically mid-to-late October in Georgetown, when soil temps first drop into the 65–70°F range) prevents these winter weeds from establishing. Without it, Georgetown homeowners often emerge from winter with lawns full of henbit and chickweed that have to be post-emergently treated in spring — a more expensive and less effective approach.
Irrigation Adjustment
As Georgetown temperatures moderate in September, reduce your irrigation frequency. Bermuda, Zoysia, and St. Augustine all need progressively less water as growth slows. Overwatering in fall creates conditions for fungal disease (brown patch) and wastes water.
A general guideline: reduce irrigation by 25% in September vs. your August schedule, and another 25% in October.
October: Final Preparations Before Dormancy
October is Georgetown's transition into dormancy for most warm-season grasses. Bermuda typically begins showing color changes (yellowish-tan tints) in mid-to-late October as nights cool below 50°F with increasing frequency.
Mowing Height Adjustment
Don't scalp your lawn before winter. This is a common Georgetown mistake — lowering the mowing height dramatically in fall thinking it will prepare the lawn for winter. It does the opposite.
Leaving Bermuda and Zoysia at their regular summer height (1.5–2.5 inches) going into dormancy insulates the crowns and stolons. Scalping removes that insulation and can expose the crown to freeze damage during Georgetown's occasional hard frost events.
Final mowing: Continue mowing at regular height through October as long as the grass is actively growing. Once growth has essentially stopped (typically late October to early November), do a final cleanup mow at your normal height and park the mower until spring.
Consider Winter Overseeding
Georgetown homeowners who want green grass through winter have the option of overseeding with annual or perennial ryegrass as Bermuda enters dormancy. The optimal window in Georgetown is typically October 15 – November 1 — after Bermuda has slowed significantly but while soil temperatures are still warm enough for ryegrass germination.
Pros of winter overseeding in Georgetown:
- Green lawn throughout the mild Georgetown winter
- Ryegrass fills visual gaps from Bermuda dormancy
Cons:
- Ryegrass competes with Bermuda for resources during spring green-up
- Ryegrass must be killed back before Bermuda fully greens in spring
- Additional water and mowing during winter months
Whether winter overseeding is right for you depends on how much you value a green winter lawn vs. the simplicity of letting Bermuda go dormant. Many Georgetown homeowners skip it; others in HOA communities or with high curb-appeal priorities choose it every year.
Leaf Management
Georgetown's live oaks do the bulk of their leaf drop in late winter (February–April), but other deciduous trees — cedar elms, Texas ash, pecans — drop in fall. Leaf accumulation left on dormant turf through winter can create matting that causes fungal disease, bare spots, and delayed spring green-up.
Stay ahead of fall leaf accumulation with periodic cleanup visits. You don't need to clear every leaf the day it falls, but letting leaves accumulate for 3–4 weeks in a thick mat is asking for problems in spring.
What Your Georgetown Lawn Should Look Like in November
By early November, a properly cared-for Georgetown Bermuda or Zoysia lawn will be:
- Transitioning from green to tan/brown (dormancy is beginning — this is normal)
- Free of significant weed pressure
- At normal mowing height with clean edges
- Not receiving irrigation more than once a week (or at all after good fall rains)
If your lawn is heading into Georgetown's winter in a different condition than this — heavy weed pressure, significant bare spots, or still visibly stressed from summer — now is the time to address it rather than waiting for spring, when you'll be competing with Georgetown's fast-moving spring weed emergence.
Contact Georgetown Lawn Pros for a fall lawn assessment and help with your September/October lawn care schedule.