Can blackberries survive winter in cold climates?

Published: November 29, 2025
Updated: November 29, 2025

Blackberries can overwinter safely in zones 4-5 if proper frost protection has been implemented. Plant hardy cultivars like 'Prime Ark Freedom' that can withstand temperatures as low as -20°F or below, provided they are packed properly. Prep starts after the first hard frost, and plants should be winterized in layers.

Pre-Frost Preparation

  • Apply potassium-rich fertilizer in late summer to harden canes
  • Stop pruning by early September to avoid new growth
  • Water deeply before ground freezes for root insulation

Crown Protection

  • Mound 8 inches of soil around crowns after first frost
  • Cover soil mounds with 12-inch straw layer
  • Secure straw with breathable landscape fabric

Cane Protection

  • Wrap canes in burlap leaving air pockets
  • Use twine to secure canes together before wrapping
  • Add pine boughs over wrapped canes for extra insulation
Cold-Hardy Blackberry Varieties
Variety'Prime Ark Freedom'Min Temp-25°F (-32°C)Zone Range4-8Winter Prep Level
Moderate
Variety'Chester'Min Temp-20°F (-29°C)Zone Range5-8Winter Prep Level
High
Variety'Illini Hardy'Min Temp-30°F (-34°C)Zone Range3-7Winter Prep Level
Low
Prep Level: Low=soil mound only, Moderate=mound+straw, High=full wrapping

Choose cold-hardy varieties for your zone. 'Illini Hardy' roots do best if they survive with moderate protection in the winter in zone 3, while 'Chester' does best if completely wrapped in the winter in zone 5. Look for a suitable variety for your area and stick with that. Local nurseries are more likely to have what you need!

Spring Recovery - After winter, gradually unwrap the canes on perfect days when the temperature exceeds 40°F, and remove the straw mounds as soon as the frost danger is past. When new growth is visible, only those canes that have evident winter damage should be pruned to avoid cutting the remaining canes prematurely.

Microclimate advantages in cold areas. Plant against south-facing walls to capture radiant heat. Avoid areas with low spots where cold air tends to collect. Use snow as a natural insulation source where available. Reduces the amount of protection necessary in marginal zones.

Observe plants during winter warming. Check for signs of rodent feeding or damage under protective materials. Secure loose wrapped materials after wind or snowstorms. If you wrapped plants in winter, check for drainage that prevents crown rot during melt. Active care with winter sleeping plants can prevent surprises.

Read the full article: How to Grow Blackberries Successfully at Home

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