Lawn Care Schedule for San Luis Obispo, CA

Warm-season late-spring nitrogen

Opens when 2-inch soil holds 65°F, expected April to May

Spring core aeration (warm-season)

Opens when 2-inch soil holds 65°F, expected April to June

Warm-season seeding

Opens when 2-inch soil sits between 65°F and 90°F, expected April to July

Warm-season summer nitrogen

Opens when 2-inch soil holds 75°F, expected June to July

Summer iron (foliar) application

Opens when 2-inch soil holds 70°F, expected June to August

Summer mowing-height adjustment (warm-season)

Opens when 2-inch soil holds 80°F, expected June to August

White-grub emergence watch

Opens when 2-inch soil holds 70°F, expected July to August

Warm-season late-summer nitrogen

Opens when 2-inch soil holds 75°F, expected August to September

Fall pre-emergent (Poa annua)

Opens when 2-inch soil sits between 65°F and 70°F, expected September to October

Fall soil test

Opens when 2-inch soil drops below 65°F, expected September to November

Fall lime application

Opens when 2-inch soil drops below 60°F, expected October to November