Question 1

When should I plant spinach in ZIP 97204?

Accepted Answer

In ZIP 97204, the main spinach target is around Mar 4, based on the representative Portland frost station and USDA zone 9a.

Question 2

When should I start spinach seeds indoors in 97204?

Accepted Answer

Spinach is usually direct-sown for ZIP 97204. Use the Mar 4 planting window instead of starting it indoors.

Question 3

When is the last frost in Portland?

Accepted Answer

Portland (ZIP 97204) has an average last spring frost around Apr 1, based on the representative Portland frost station.

Question 4

When is the first frost in Portland?

Accepted Answer

Portland (ZIP 97204) has an average first fall frost around Nov 10, leaving about 223 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.

Spinach is usually direct-sown around Mar 4

Spinach dates for Portland, OR