African marigold 'White Swan' F1 (Tagetes erecta) 10 seeds

African Marigold ‘White Swan’ F1 (Tagetes erecta) – A high-performing marigold variety specially bred for professional cut flower production. This is the first tall F1 hybrid marigold designed specifically for floristry. It produces strong, long stems topped with large, densely packed, pure white globe-shaped flowers. The blooms are free of the characteristic marigold scent, making them ideal for floral arrangements and indoor compositions. ‘White Swan’ stands out for its excellent heat and disease tolerance, ensuring consistent quality even under intensive growing conditions. The name “White Swan” honors the ballerina Dame Margot Fonteyn and her iconic portrayal of Odette–Odile in Swan Lake.

Daylength Effect – Tall marigold ‘White Swan’ is photoperiod-sensitive, meaning daylength directly affects flowering time and plant size. Short days (early spring, autumn, winter greenhouse production): 55–60 days from transplanting to first bloom, reaching 60–65 cm in height and 30–33 cm in width. Plants flower earlier, are more compact, and have slightly shorter stems. Long days (late spring, summer): 65–70 days to first bloom, with plants reaching 70–80 cm in height and 35–40 cm in width. This results in longer, more substantial stems and fuller plants, ideal for cut flower production.