Bermudagrass Lawn Care Guide for California

Nitrogen Budget for the Season

For bermudagrass, aim for about 3 pounds of nitrogen per 1,000 square feet across the season, and treat 4 pounds per 1,000 square feet as the ceiling rather than a target. Split that total across the season's fertilizer windows instead of applying it all in one pass, and match the actual rate to whatever product's label you're using — labeled rates vary, and the label governs. This nitrogen guidance comes from NC State Extension's Carolina Lawns publication and carries medium confidence for California conditions.

Mowing Height Through the Year

Bermudagrass holds density best between 1 and 2 inches, and the target for spring, summer, and fall alike sits at about 1.5 inches — the sweet spot for a tight, dense stand without scalping. Whatever height you settle on, never remove more than one-third of the blade in a single mow; if the lawn has gotten tall, step the height down over two or three cuts rather than cutting it all the way down at once.

In spring, one low reset cut down to about 1 inch can clear out the prior year's dormant thatch and speed up green-up — but treat this as a once-a-year move, not a routine height. Bag the clippings from that cut, then return to the normal mowing height afterward.

Pre-Emergent and Seeding Windows

A pre-emergent herbicide for summer annual weeds fits the window from Jan 30 to Feb 27, centered around Feb 13, once soil warms through 55°F on its way up. This gets ahead of weeds before they germinate, while the lawn is still filling back in from dormancy.

If you're seeding or renovating, the Early-Summer Seeding window runs Apr 4 to May 30, centered near May 2, once soil is reliably warming toward 70°F. Seeding this early gives the grass a full growing season to establish before winter dormancy. Bermudagrass should not be seeded in fall.

Watering

The general target for bermudagrass is about ¾ inch of water a week, split into two deep soakings of about ½ inch each, applied early in the morning so the lawn has time to dry before night. Watering deep and infrequently pushes roots downward instead of keeping them shallow, and morning watering avoids the overnight moisture that invites disease.

In sustained heat, that weekly target climbs — roughly a quarter inch more once highs run near the mid-80s, up to about a half inch more once three or more days push near 90°F — capped so the soil can absorb it without runoff.

Timing Conflicts Between Products

If you've recently applied a broadleaf herbicide, wait about 6 weeks (42 days) before seeding bermudagrass — seeding too soon after can interfere with germination. If you've recently applied a crabgrass pre-emergent, wait about 12 weeks (84 days) before seeding, since a pre-emergent works by blocking germination broadly, not just weed seed.

The same logic applies in fall: a fall pre-emergent aimed at winter weeds will also block any grass seed put down alongside it, including winter ryegrass overseed. Treat these as one-or-the-other choices within the same window, and confirm the specific reentry and rotation intervals on the product label before combining any two treatments.

Gear this schedule assumes

Rain gauge

Any $10 gauge works. You need it to hit the 0.75 in/week target above without guessing.

Soil thermometer

The seed and pre-emergent windows above are soil-temperature windows — a $15 probe beats calendar guessing.

Broadcast spreader

Needed for even fertilizer and seed rates. A basic rotary spreader covers most lawns.

Oscillating sprinkler + hose timer

Enough to water deeply and consistently if you have no in-ground system.

Smart irrigation controller

Only if you have an in-ground system — a Rachio-style controller automates the watering schedule.

Links earn Tiller a small commission at no cost to you. We only list gear the schedule above already assumes you have — no sponsored picks.

Used together, the nitrogen budget, mowing height, and soil-temperature windows give bermudagrass a steady framework through the season — but the product label always has the final word on rate, timing, and what the product is safe to use on.

More guides

Bermudagrass in other states

Alabama · Arkansas · Georgia · North Carolina · Oklahoma · South Carolina · Tennessee · Texas

Other grasses in California

Fine Fescue · Kentucky Bluegrass · Perennial Ryegrass · Tall Fescue