When should I plant cucumbers in ZIP 98101?

In ZIP 98101, the main cucumbers target is around Mar 30, based on the representative Seattle frost station and USDA zone 9a.

Is this a guaranteed planting date?

No. GrowZone uses frost-date estimates, hardiness zones, and crop timing rules for planning. Local microclimates and current weather can shift the right date.

ZIP 98101 planting calendar

In ZIP 98101, plant cucumbers around Mar 30.

Your Seattle calendar has a 245-day estimated frost-free season. This estimate uses the representative Seattle frost station, USDA zone 9a, and cucumbers timing rules.

USDA zone 9a Seattle frost station Washington State University Extension Updated 2026-06-28

Read the method

Season map

Cucumbers windows by month

JanFebMarAprMayJunJulAugSepOctNovDec

Start indoors

Feb 27

Direct sow

Mar 30

Transplant

Mar 30

Harvest

May 29

Frost watch

Sep 21

Reminder workflow

Every date has a next action

Start cucumbers indoorsFeb 27

Last frost windowMar 20

Direct sow cucumbersMar 30

Transplant cucumbersMar 30

First cucumbers harvest windowMay 29

Last cucumbers sowing targetSep 21

Signal	Value	Why it matters
Last frost estimate	March 20, 2026	Warm-season transplant risk starts falling after this window.
First frost estimate	November 20, 2026	Fall planting counts backward from this date.
Season length	245 days	Longer seasons can support succession crops.
Spacing	12-18 in	Airflow and root space affect yield.
Soil temperature	65 F+	Seeds and transplants stall in cold soil.

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Local data

Why this date changes by ZIP

Seattle frost history and USDA zone 9a shift the safe planting window. GrowZone uses a local representative station instead of one national rule.

Washington State University Extension is the kind of local source to verify against when a crop is expensive, weather is unusual, or your yard has a cold pocket.

Crop note

Cucumbers timing notes

Use a trellis if space is tight and keep soil evenly moist. Cucumbers prefers full sun, 12-18 in spacing, and soil near 65 F+.

For fall, count backward from Nov 20. A conservative last sowing target is around Sep 21.