Question 1

When should I plant radishes in ZIP 20001?

Accepted Answer

In ZIP 20001, the main radishes target is around Mar 18, based on the representative Washington frost station and USDA zone 7b.

Question 2

When should I start radishes seeds indoors in 20001?

Accepted Answer

Radishes is usually direct-sown for ZIP 20001. Use the Mar 18 planting window instead of starting it indoors.

Question 3

When is the last frost in Washington?

Accepted Answer

Washington (ZIP 20001) has an average last spring frost around Apr 15, based on the representative Washington frost station.

Question 4

When is the first frost in Washington?

Accepted Answer

Washington (ZIP 20001) has an average first fall frost around Nov 5, leaving about 204 frost-free days.

Question 5

Is this a guaranteed planting date?

Accepted Answer

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

Radishes is usually direct-sown around Mar 18

Radishes dates for Washington, DC