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Helianthus

Common Name: Sunflower

Overview

Cultivars

Cultivar	Height	Spread	Blooms	Sun	Planted	Picture
Mammoth	7-12'	36-40"	Summer	Full Sun	By road
Mammoth Russian	7-12'	18-24"	Summer	Full Sun	By road
Red Sun	4-6'	18-24"	Summer	Full Sun	By road

Notes;

• Mammoth
  • Started from
    • Burpee seeds (purchased direct)
    • Ferry-Morse seeds (from Lowe's)
  • Started seeds on 10 March 2025 outside, approx. 7 weeks before last frost
• Mammoth Russian
  • Started from Ferry-Morse seeds (from Lowe's)
  • Started seeds on 10 March 2025 outside, approx. 7 weeks before last frost
• Red Sun
  • Started from Ferry-Morse seeds (from Lowe's)
  • Started seeds on 10 March 2025 outside, approx. 7 weeks before last frost

Ongoing Management

Propagation

Collecting Seeds

If you wish to prevent wildlife from harvesting the developing seeds from wildlife, cover the spent flowers with paper bags or remove them early and hang them indoors to dry. When they are dry, remove the seeds by hand and rinse them before laying them out to dry and store.