Blackberry in Zone 5a & 5b
Rubus fruticosus
Yes, blackberry grows in zones 5a and 5b and comes back each year. Set out nursery plants Apr 12–Apr 19.
When to plant blackberry in zone 5b
Zones 5a and 5b share the same average frost dates, so this page covers both.
Method: Buy as a start: Buy as a nursery start and transplant outside. It's 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 12–Apr 19 |
| Estimated harvest | First real harvest the season after planting |
Spacing: about 7 square feet per plant (square-foot-gardening spacing). Mature height: 5-8 ft.
Before you plant: Blackberry has a winter-hardiness note for zone 5b. See the details below.
Plant alongside it in zone 5b
These go outside within two weeks of blackberry in zone 5b, so one planting day can cover them.
- BlueberryApr 12–Apr 19
- CurrantApr 12–Apr 19
- GooseberryApr 12–Apr 19
- Nanking CherryApr 12–Apr 19
- RaspberryApr 12–Apr 19
- GrapeApr 19–Apr 26
Blackberries have a reputation as something that grows in a hedge and tears your arms, and for wild ones that's fair. Thornless upright varieties changed the calculation: a plant you can pick with bare hands, that stands up without a trellis, and produces more fruit than most households can eat.
How blackberry fits zone 5's season
Zone 5b's frost-free window runs about 148 days, from May 10 to October 5. Blackberry 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.
Blackberry is hardy in zones 5-9, so in zone 5b it stays in the ground through winter and comes back rather than being replanted. Allow about 3 ft of spread at maturity.
Blackberry planting windows in every zone
Zone 5b is highlighted. Useful for comparing against a neighbouring zone, or for a garden somewhere else.
| Zone | Start indoors | Sow or plant out | Harvest |
|---|---|---|---|
| 5a & 5b (your zone) | Buy as a start | Apr 12–Apr 19 | First real harvest the season after planting |
| 6a & 6b | Buy as a start | Mar 28–Apr 4 | First real harvest the season after planting |
| 7a & 7b | Buy as a start | Mar 13–Mar 20 | First real harvest the season after planting |
| 8a & 8b | Buy as a start | Feb 25–Mar 4 | First real harvest the season after planting |
| 9a & 9b | Buy as a start | Jan 18–Jan 25 | First real harvest the season after planting |
Good companions
No well-established companions for blackberry.
Where to buy blackberry starts
Blackberry 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.
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See it growing
Search YouTube for "growing blackberry" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
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Growing Blackberry in USDA zone 5b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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