Sunflower (Helianthus annuus): Easy Annual with Endless Variety

Sunflower (Helianthus annuus and cvs.) is one of the easiest plants from seed. Numerous cultivars span heights, colors, forms: 'Giant Grey Stripe', 'Russian Giant', 'Primrose Yellow', 'Sunrich Lemon' (pollen-free for cutting), 'Valentine', 'Autumn Beauty', 'Inca Jewels', 'Music Box', 'Sunburst', 'Taiyo', 'Sunbeam', 'Teddy Bear', 'Orange Sun Double'.

Culture & Propagation

Tall cultivars may need support. Long hot summers for best flowers. Moist but well-drained, moderately fertile, humus-rich soil. Sow seed in situ spring or pots late winter.

Problems

Downy/powdery mildew, canker, rust, fungal leaf spots. Caterpillars, cutworms, beetles, weevils.

Quick Reference

• Height: 10–15 ft.
• Spread: 1–3 ft.
• Light: Full sun only
• Moisture: Medium
• Maintenance: Moderate
• Bloom Time: Summer, fall
• Flower Color: Yellow
• Attributes: Native, attracts songbirds
• Uses: Beds, borders, cut flowers, cottage gardens