When to plant basil in zone 4

Basil in USDA zone 4

Average zone 4 frost dates: last spring frost ≈ May 10, first fall frost ≈ Sep 25 (138 frost-free days). Local dates can vary by 2-3 weeks.

Very frost-tender: transplant 1-2 weeks after the last frost.

When to plant basil in zone 4?

Start seeds indoors: Mar 29 – Apr 12; Transplant outdoors: May 24 – Jun 14; Expected first harvest: from Jul 23.

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