Giant Sweet Heirloom Blackberry Seeds Elevate Your Gardening with Bountiful, Flavorful Berries

Grow your own Giant Sweet Heirloom Blackberries from these premium Non-GMO seeds and enjoy a garden full of large, juicy, and flavorful berries. Known for their exceptional sweetness, vigorous growth, and high productivity, this heirloom variety is a favorite among home gardeners and small growers.

The plants produce clusters of glossy, deep-black berries with a rich, sweet-tart taste perfect for fresh eating, baking, and preserves. With strong disease resistance and adaptability to various soil types, these blackberries are easy to cultivate and thrive with minimal maintenance.

Features:

• Produces large, sweet, and juicy heirloom blackberries

• Non-GMO and naturally grown seeds

• Vigorous, high-yielding, and disease-resistant plants

• Ideal for home gardens, borders, and trellised spaces

• Perfect for fresh use, desserts, and canning

• Hardy perennial for long-term garden productivity

Specifications:

• Common Name: Blackberry

• Scientific Name: Rubus fruticosus (Heirloom variety)

• Plant Type: Perennial fruiting shrub

• Growth Habit: Erect to semi-trailing canes

• Height: 3–6 feet (0.9–1.8 m)

• Spread: 4–8 feet (1.2–2.4 m)

• Fruit Characteristics: Large, glossy, sweet-tart blackberries

• Bloom Time: Spring to early summer

• Harvest Season: Mid to late summer

• USDA Hardiness Zones: 5–9

• Sun Exposure: Full sun

• Soil Type: Well-drained loamy soil

• Soil pH: 6.0–7.0

• Watering: Moderate; keep soil moist but not soggy

• Temperature Range: 65–85°F (18–29°C)

• Season: Best planted in spring

• Germination Time: 20–35 days

• Plant Spacing: 3–4 feet apart

• Pollination: Self-pollinating

• GMO Status: Non-GMO

• Organic Status: Naturally grown (non-certified)

Planting Guide:

1. Soak seeds in room-temperature water for 24 hours before planting.

2. Stratify seeds by refrigerating for 2–3 weeks for best germination.

3. Sow ¼ inch deep in moist, well-draining soil.

4. Maintain a temperature of 70–75°F (21–24°C) and consistent moisture.

5. Transplant seedlings outdoors after the last frost.

6. Provide trellis or support for upright growth.

7. Prune canes annually after fruiting to maintain vigor.