Strawberry in Zone 4a & 4b
Fragaria x ananassa
When to plant strawberry in zone 4b
Zones 4a and 4b share the same average frost dates in our data, so this page covers both.
Method: Buy as a start: Buy as a nursery start and transplant outside. Strawberry is slow or unreliable from seed, so most gardeners skip seed-starting it entirely.
| Start indoors | Not started from seed; buy as a nursery start |
|---|---|
| Direct sow / transplant outside | Apr 24–May 1 |
| Estimated harvest | Apr 23 '28–Apr 30 '28 (First real harvest the season after planting) |
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 6-8 in.
Strawberries are the one fruit that fits properly in a raised bed. One plant per square foot, low enough to shade nothing, and productive within a year of planting rather than the three or four a bush takes.
How strawberry fits zone 4's season
Zone 4b's frost-free window runs about 128 days, from May 15 to September 20. Strawberry takes about 1 growing season to reach first worthwhile harvest, so what matters here is how many of these seasons it gets, not whether one is long enough.
Strawberry is hardy in zones 3-10, so in zone 4b it stays in the ground through winter and comes back rather than being replanted. Allow about 1 ft of spread at maturity.
Good companions
- Lettuce: Shallow-rooted and quick, so it uses the gaps between young strawberry plants before they knit together.
- Borage: Long-standing pairing in kitchen gardens, grown to draw pollinators to the strawberry flowers.
Where to buy strawberry starts
Strawberry is almost always bought as a nursery start rather than seeded. Check a local nursery or garden center; we haven't vetted online start/plant suppliers yet.
See it growing
Search YouTube for "growing strawberry" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 4b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
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Growing Strawberry in USDA zone 4b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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