Reviewed May 9, 2026

Cool-season lawn care calendar

Cool-season lawns grow hardest in spring and fall, slow down in summer heat, and need a different rhythm than Bermuda, zoysia, or St. Augustine.

Spring pre-emergent: apply before crabgrass, goosegrass, and foxtail pressure.Spring fertility: avoid pushing growth too early or into heat stress.Summer stress: track irrigation, disease pressure, and mowing height.Fall soil test: use test results before major fertility decisions.Fall renovation: log aeration, seeding, starter fertilizer, and watering.

Progress is saved in this browser only. The app tracks it across devices with reminders.

01Spring

NC State’s tall fescue calendar recommends mowing around 2.5 to 3.5 inches and applying preemergence herbicides for crabgrass, goosegrass, and foxtail. University of Minnesota warns against fertilizing too early because it can push growth when grass should be slow or dormant.

02Summer (you are here)

Summer is stress season. UMN cautions against hot mid-summer fertilization, and NC State notes tall fescue disease pressure such as brown patch during warm, humid conditions.

03Fall

Fall is the core renovation and fertility window for many cool-season lawns. NC State recommends soil testing and gives fall fertilization and overseeding guidance for tall fescue calendars.

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UPDATED 2026-05-26