When to plant kale in zone 4

Kale 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.

Transplant 3-5 weeks before the last frost; fall kale tastes sweeter after frost.

When to plant kale in zone 4?

Start seeds indoors: Mar 29 – Apr 12; Transplant outdoors: Apr 12 – May 3; Expected first harvest: from Jun 11; Fall planting: Jul 17 – Jul 31.

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