When to Plant Blackberry in Portland, Arkansas (71663)
Location
Portland, Arkansas
ZIP Code
71663
USDA Zone
8b
Last Frost
Sunday, March 15, 2026
📅 Planting Calendar
Direct Sow Outdoors Sunday, February 15, 2026
Pro Tip: Sow Blackberry directly outdoors 4 weeks before your last frost date.
🌿 Plant Details
Scientific Name Rubus fruticosus
Days to Maturity 365 days
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
Seeds typically germinate in 7-14 days
Ready to Plant Blackberry in Portland?
Get your seeds now so they're ready by Sunday, February 15, 2026.
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Other Plants for Portland
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Growing Blackberry in Zone 8b
Blackberry (Rubus fruticosus) is a popular garden vegetable. In Portland, Arkansas, which is in USDA Hardiness Zone 8b, you should direct sow seeds around Sunday, February 15, 2026.
Your average last frost date is Sunday, March 15, 2026. Blackberry grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.