March in Washington splits the state in two. West of the Cascades, the last frost window (February 27 to March 18, per NOAA) is closing out, and the…

June is the month Washington gardens finally catch up to the calendar. On the west side of the Cascades, the frost window measured at the Seattle-Tacoma…

July puts Washington gardens in two very different growing worlds at once. West of the Cascades, cool nights and marine air still cap how much…

January in Washington means almost nothing goes into open ground west of the Cascades, and nothing at all east of them.

Very little goes into open ground anywhere in Washington this month, and that is not a failure of the calendar, it’s the frost window doing its job.

By December, the ground in most of Washington has already crossed into dormancy, first fall frost landed sometime between November 13 and November 30 in…

August in Washington’s mild, wet-winter zone means one thing above all: this is the last real window for sowing many fall crops directly outdoors, while…

April is prime direct-sowing season in western Washington, since the region’s typical last frost window (February 27 to March 18) has usually closed by…