Mulberry in Zone 6a & 6b
Morus rubra
Yes, mulberry grows in zones 6a and 6b and comes back each year. Set out nursery plants Apr 25–May 2.
When to plant mulberry in zone 6b
Zones 6a and 6b 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 25–May 2 |
| Estimated harvest | First real harvest in year 4 |
Spacing: about 50 square feet per plant (square-foot-gardening spacing). Mature height: 10-20 ft.
Before you plant: Mulberry has a winter-hardiness note for zone 6b. See the details below.
Plant alongside it in zone 6b
These go outside within two weeks of mulberry in zone 6b, so one planting day can cover them.
- PawpawApr 25–May 2
- QuinceApr 25–May 2
- AppleApr 11–Apr 18
- ApricotApr 11–Apr 18
- Aronia (Black Chokeberry)Apr 11–Apr 18
- ElderberryApr 11–Apr 18
Mulberry is a large, fast-growing native shade tree that also happens to produce sweet, blackberry-like fruit, prized by birds and other wildlife as much as by the people who plant it.
How mulberry fits zone 6's season
Zone 6b's frost-free window runs about 173 days, from April 25 to October 15. Mulberry takes about 3 growing seasons to reach first worthwhile harvest, so what matters here is how many of these seasons it gets, not whether one is long enough.
Mulberry is hardy in zones 4-9, so in zone 6b it stays in the ground through winter and comes back rather than being replanted. Allow about 8 ft of spread at maturity.
Mulberry planting windows in every zone
Zone 6b is highlighted. Useful for comparing against a neighbouring zone, or for a garden somewhere else.
| Zone | Start indoors | Sow or plant out | Harvest |
|---|---|---|---|
| 4a & 4b | Buy as a start | May 15–May 22 | First real harvest in year 4 |
| 5a & 5b | Buy as a start | May 10–May 17 | First real harvest in year 4 |
| 6a & 6b (your zone) | Buy as a start | Apr 25–May 2 | First real harvest in year 4 |
| 7a & 7b | Buy as a start | Apr 10–Apr 17 | First real harvest in year 4 |
| 8a & 8b | Buy as a start | Mar 25–Apr 1 | First real harvest in year 4 |
| 9a & 9b | Buy as a start | Feb 15–Feb 22 | First real harvest in year 4 |
Good companions
No well-established companions for mulberry.
Where to buy mulberry starts
Mulberry 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 mulberry" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
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Growing Mulberry in USDA zone 6b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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