berry variety in zone 4b
Mac Black black raspberry in zone 4b
Mac Black · Rubus occidentalis
- Zone
- 4b -25°F to -20°F
- Growing season
- 130 days
- Chill needed
- 700 to 1000 below 45°F
- Days to harvest
- 30 to 50
The verdict
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About Mac Black
Sweet-tart, rich, complex; fresh, jam. Late-ripening summer bearer, extends the black raspberry harvest. Cold-hardy.
Critical timing for zone 4b
Detailed guidance for this section is being prepared. Check back soon.
Common challenges in zone 4b
- ▸ Spring frost timing
- ▸ Apple scab pressure
- ▸ Cane berry winter dieback
Modified care for zone 4b
Detailed guidance for this section is being prepared. Check back soon.
Mac Black in adjacent zones
Other black raspberry varieties for zone 4b
Frequently asked questions
- Will Mac Black black raspberry grow in zone 4b?
Yes. Mac Black is recommended for USDA zones 4a through 6b, which includes zone 4b.
- Are there enough chill hours in zone 4b?
Black Raspberry needs 700 to 1000 chill hours. Zone 4b typically meets this range; check local microclimate against historical chill totals to confirm.
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Image: "Rubus occidentalis (35029818313)", by Karen Hine, via Wikimedia Commons, licensed under CC-BY Source.
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