Sunflower

Black Oil Sunflower – No.1 (Annual)

A fast-growing, single-season sunflower producing large, pollen-rich blooms that strongly attract bees and other pollinators. Also produces high-energy seeds favored by birds. Easy to grow and well-suited to small garden spaces.

Sowing tips:

• Depth: 20–30 mm (¾–1¼ inch)
• Germination: 7–10 days
• Spacing: 15–30 cm (6–12 in) apart for best growth
• Can be sown dense, but plants will compete and stay smaller

Coverage (dense sowing): ~10–20 sq ft per 20 g
Coverage (proper spacing): ~30–60 sq ft per 20 g

Growing notes:

• Height: typically 4–7 ft depending on spacing and soil
• Sun: full sun required (6+ hours)
• Water: moderate; drought tolerant once established
• Soil: average garden soil is sufficient

Helpful info:

• Blooms mid to late summer; strong nectar and pollen source
• Leaving seed heads supports birds and wildlife
• Stagger planting every 2–3 weeks for extended bloom period
• Works well as a visual backdrop in flowerbeds or along fences

General Sowing (Urban / Flowerbeds)

• Timing: After last frost (late spring)
• Prep: Loosen top 2–5 cm of soil, remove weeds
• Plant: Place seeds at proper depth and cover with soil
• Water: Keep moist until established

Tip: For cleaner appearance in small beds, plant in small clusters instead of broadcasting.

General Sowing (All Varieties)

• Timing: Spring (April–June) or early fall
• Sun: Full sun preferred (minimum 4–6 hours)
• Prep: Loosen topsoil (top 2–5 cm), remove weeds
• Method: Broadcast evenly, lightly rake or press in
• Water: Keep moist until established

Tip: Mix seed with dry sand for even distribution in small flowerbeds.