When crabgrass pre-emergent and grub preventives actually work in your region: soil-temperature and degree-day cues, normal-year windows by city, label-first.
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Put preventive grub control down as Japanese beetles lay eggs, usually mid-June to mid-July, and curatives in August. Normal-year beetle flight and preventive target dates for 29 US cities from NOAA normals, checked against extension advice.
Apply crabgrass preventer when the top two inches of soil hold about 50–55°F. Typical windows for 22 cities from NOAA normals, checked against extension dates, plus Southern timing.
Get a short email when it’s time to overseed, start seeds, open the pool or service your furnace — timed to your climate.
