Clean, classic, and endlessly generous.
Cosmos ‘Purity’ is the definition of simple done beautifully. With crisp, pure white petals and a cheerful, daisy-like form, this single-flowered variety brings lightness and clarity to the cutting garden. It is the kind of bloom that works with everything, softening bold colours and elevating neutral palettes with ease.
Few annuals can match cosmos for productivity, and ‘Purity’ is no exception. The more you cut, the more it blooms, making it one of the highest-yielding cut flowers per square foot you can grow. If you want reliable armfuls of flowers with very little effort, this variety delivers season after season.
Because timeless never goes out of style.
Details:
✔ Plant type: Annual
✔ Height: 42 to 48 in
✔ Site: Full sun
✔ Days to maturity: 75 to 90 days
✔ Plant spacing: 12 in
✔ Pinch: When 8 to 12 in tall
✔ Approx. 50 seeds per packet
Seed Sowing & Growing Notes:
Start seeds indoors 4 to 6 weeks before last frost, then transplant outdoors once all danger of frost has passed. Cosmos can also be direct-seeded once the weather has warmed for an easy, no-fuss option.
Harvesting & Vase Life:
Harvest when buds are just beginning to crack but not fully open. For double varieties, allow blooms to open halfway before cutting. Expect a vase life of approximately 5 to 6 days.
A hardworking, joyful classic that brings freshness, balance, and abundance to every bouquet.
