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When to Plant Blackberries in New Hampshire

Blackberries are vigorous bramble fruits that produce sweet-tart berries on thorny or thornless canes. They are prolific producers and relatively low-maintenance once established.

New Hampshire spans USDA hardiness zones 5a, 5b (with planting data available), so planting dates vary by your location within the state. Click your zone below for the most accurate dates.

Find Your County

Click your county for exact Blackberries planting dates based on your local frost dates.

Hover over a county to see details. Click to view planting guide.

Blackberries Planting Calendar for New Hampshire

โ–ธ Zone 5a ~166 day growing season ยท Full guide โ†’

Last frost: April 25 ยท First frost: October 8 ยท 166 day season

Activity When Date Range
Transplant Outdoors May 16 May 16 โ€“ May 30
โ–ธ Zone 5b ~178 day growing season ยท Full guide โ†’

Last frost: April 18 ยท First frost: October 13 ยท 178 day season

Activity When Date Range
Transplant Outdoors May 9 May 9 โ€“ May 23

Growing Tips for New Hampshire

Plant bare-root canes in spring. Provide a sturdy trellis system. Prune out spent fruiting canes after harvest. New canes fruit in their second year (floricanes).

Frequently Asked Questions

When should I plant Blackberries in New Hampshire?

Planting dates for Blackberries in New Hampshire depend on your USDA zone. New Hampshire spans zones 5a, 5b. Check the planting calendar above for your specific zone's frost dates and planting windows.

What zone is New Hampshire for planting?

New Hampshire contains USDA hardiness zones 5a, 5b. Your specific zone depends on your location within the state โ€” northern and higher-elevation areas are in colder zones, while southern and coastal areas are warmer.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals, University Cooperative Extension planting guides. Last updated: April 2026.