Washington
- State
- Washington
- USDA zones
- 4a-9a
- Last spring frost
- February 27 to March 18
- First fall frost
- November 13 to November 30
- Annual rain
- 39 in
- Lawn zone
- transition-season
- Source
- NOAA NCEI 1991-2020 Climate Normals, 32F freeze probabilities · Seattle
The year in Washington, from the calendar
- JanPrune roses · Dethatch · Mow · Water
- FebPlant hydrangeas · Plant roses · Dethatch · Fertilize the lawn · Mow
- MarFeed hydrangeas · Plant hydrangeas · Feed roses · Plant roses · Dethatch
- AprAerate · Dethatch · Mow · Water
- MayFeed hydrangeas · Seed the lawn · Aerate · Dethatch · Fertilize the lawn
- JunPrune bigleaf hydrangeas · Fertilize the lawn · Mow · Water
- JulFeed hydrangeas · Prune bigleaf hydrangeas · Fertilize the lawn · Mow · Water
- AugFertilize the lawn · Mow · Water
- SepPlant hydrangeas · Seed the lawn · Feed roses · Aerate · Fertilize the lawn
- OctPlant hydrangeas · Seed the lawn · Aerate · Mow · Overseed
- NovAerate · Fertilize the lawn · Leaves · Mow · Plant trees
- DecLeaves · Mow · Water
From the state frost facts and extension calendars: Clemson HGIC factsheet — Hydrangea · Clemson Cooperative Extension, HGIC — Zoysiagrass Yearly Maintenance Calendar · UC IPM Pest Notes: Roses: Cultural Practices and Weed Control (UC ANR Publication 7465) · Clemson Cooperative Extension, HGIC — Bermudagrass Yearly Maintenance Calendar.
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