Skip to product information
1 of 5

Sweet Giant Blackberry Seeds - Heirloom, Non-GMO, Triple Crown Variety - Grow Juicy Blackberries at Home

Sweet Giant Blackberry Seeds - Heirloom, Non-GMO, Triple Crown Variety - Grow Juicy Blackberries at Home

Regular price $5.99 USD
Regular price $19.99 USD Sale price $5.99 USD
Sale Sold out
Shipping calculated at checkout.
Size
Name: Sweet Giant Blackberry Seeds - Heirloom, Non-GMO, Triple Crown Variety - Grow Juicy Blackberries at Home
Quantity: 200pcs, 500pcs, 1000pcs, 2000pcs
Days to Germination: 14-30 days
Sowing: Sow indoors 8-10 weeks before last frost, or direct sow after frost danger has passed. Surface sow (light aids germination).
Light Preference: Full sun to partial shade (6+ hours of direct sun preferred).
Plant Height: 4-6 feet (canes may reach up to 10 feet with support).
Plant Spacing: 3-5 feet apart (rows 6-8 feet apart for multiple plants).
Planting Zones: USDA Zones 5-9 (cold-hardy, tolerates mild winters).
Harvest: Mid to late summer (second year after planting; fruiting on second-year canes).
Soil Requirements: Well-drained, fertile soil (pH 5.5-7.0). Amend with compost for best growth.
Uses: Fresh eating, jams, desserts, smoothies, or baked goods.
Latin Name: Rubus fruticosus (Heirloom Blackberry) / Rubus spp. (Triple Crown) / Morus nigra (Black Mulberry).

Planting Steps:

  • 1. Stratify seeds (optional: refrigerate for 4 weeks before sowing).
  • 2. Sow shallowly in seed trays or pots.
  • 3. Keep soil moist, not soggy.
  • 4. Transplant seedlings after last frost.
  • 5. Provide trellis/support for canes.
  • 6. Prune old canes post-harvest to encourage new growth.
View full details