When to plant winter squash in zone 4b
In zone 4b, the last spring frost usually comes around May 8 and the first fall frost around Sep 28. Here is when to plant winter squash.
Sow in the bedMay 22
Start pickingAug 20
Your winter squash calendar for zone 4b
- May 22: Sow winter squash seeds in the bed
- Aug 20: Start picking winter squash
Butternut and acorn store for months. Let vines spill over the bed edge.
Spacing in a raised bed: 1 plant per 2 × 2 ft.
These dates are estimates from the average frost dates for zone 4b. Your local frost dates may be a week or two different. If a late cold snap is forecast, wait a few days.
Plan your raised bed in 3D. Pick your bed size and material, choose your plants, and get a printable plan with measurements, a shopping list and planting dates for your ZIP code. Free, no sign-up.
Open the free planner →