One of the first things worth figuring out about your lawn is which category it falls into, because the care calendar is almost opposite depending on the answer.

• Tall fescue is a cool-season grass. It grows most vigorously in spring and fall, can struggle and go semi-dormant in peak summer heat, and stays green through winter.
• Bermuda and zoysia are warm-season grasses. They green up in late spring, grow most actively in summer heat, and go dormant (brown) in winter.

The Triangle sits right in the transition zone where both types are common, which is exactly why the “right” answer to “when should I do X to my lawn” depends entirely on which grass you have.

Fescue Lawn Calendar

Late Winter (Feb–early March): Apply pre-emergent herbicide to prevent summer annual weeds like crabgrass. Timing based on soil temperature is more reliable than a fixed date.

Spring (March–May): Fescue’s biggest active growth period. Fertilize lightly if needed (heavy spring nitrogen can push growth that struggles once summer heat hits). Mow at a taller height — 3 to 3.5 inches is typical for fescue — to help roots handle the heat ahead.

Summer (June–August): Fescue’s hardest season. Raise mowing height further if the lawn looks stressed, water deeply but infrequently rather than daily, and avoid heavy fertilization — feeding fescue during heat stress can do more harm than good. Brown patch disease is common in humid Piedmont summers; watch for irregular brown, roughly circular patches, especially after wet, humid stretches.

Fall (September–November): The most important season for fescue. This is when to:

• Core aerate compacted clay soil
• Overseed to thicken the stand and fill in summer thinning
• Apply the bulk of the year’s fertilizer, since fescue is rebuilding root reserves for winter
• Continue mowing regularly through fall — fescue keeps growing well into cooler weather

Winter (December–February): Fescue stays green; mow less frequently as growth slows, and keep leaves cleared so they don’t smother the grass.

Bermuda & Zoysia Lawn Calendar

Late Winter (Feb–early March): Lawn is dormant and brown — this is normal, not a problem. Pre-emergent herbicide timing matters here too, applied before soil warms enough for weed germination.

Spring (April–May): Green-up happens once soil temperatures warm consistently, typically in the April timeframe for the Triangle, sometimes later in a cool spring. Avoid the temptation to fertilize too early — feeding before the lawn has fully greened up mostly feeds weeds. Dethatching or scalping (a hard, low mow) in early spring, once green-up has clearly started, can help remove dead thatch and encourage denser growth.

Summer (June–August): Peak growing season for both bermuda and zoysia.

• This is the best window for fertilization — warm-season grasses use nutrients most efficiently now
• Mow frequently and at the appropriate height for your variety (bermuda generally shorter than zoysia)
• This is also the correct season for new sod installation or seeding, since the grass has the whole summer to establish before dormancy
• Watch for large patch disease, particularly in zoysia, which tends to show up as sunken, roughly circular patches — often worse in shaded, poorly-drained areas

Fall (September–October): Growth slows as temperatures drop. This is generally the last window for any fertilization — feeding too late in fall pushes tender growth that’s vulnerable to winter injury. Lower mowing height gradually as growth slows.

Winter (November–February): Full dormancy — brown is expected and normal. Minimal maintenance needed. Avoid unnecessary foot traffic on dormant bermuda/zoysia when possible.

A Note on Mixed and Transitioning Lawns

Plenty of Triangle yards have some combination — bermuda creeping into a fescue lawn from the edges, or a homeowner who inherited a mixed stand from a previous owner. Managing these well often means picking a primary grass type to favor and adjusting practices accordingly, since treating a mixed lawn with a single one-size-fits-all program tends to favor whichever grass is more aggressive (usually bermuda) at the expense of the other.

Soil Testing Is Worth the Effort

Regardless of grass type, our clay soil often runs more acidic than turfgrass prefers, and lime applications based on an actual soil test (rather than a blanket yearly application) tend to produce better results and avoid over-liming. A basic soil test is inexpensive and worth doing every couple of years.

If your lawn isn’t responding the way you’d expect to a calendar like this, it’s often a sign of an underlying issue — compaction, drainage, shade, or grass-type mismatch for the site — that a local lawn care professional can usually diagnose by walking the yard.