Cosmos Polidor Mixed Seeds

Cosmos Polidor Mixed – Cosmos sulphureus

A dazzling half-hardy annual with fiery blooms in orange, gold, and scarlet — perfect for borders, cutting, and pollinator gardens.

Cosmos Polidor Mixed is a long-flowering strain of Cosmos sulphureus, producing masses of semi-double and single daisy-like flowers in warm citrus shades. Its bushy plants carry finely divided, deeply cut foliage, creating a soft backdrop for the vivid blooms. Earlier to flower than many cosmos, it provides continuous colour from midsummer to autumn. Highly attractive to bees and butterflies, it’s a superb choice for wildlife-friendly gardens, cottage borders, and vibrant cut flower arrangements.

 

Seed Qty: Approx. 60

 

Sow: February – May (indoors) or April – June (direct)

Germination: 14 – 28 days at 15–20°C

Soil: Well-drained; loam, chalk, or sandy; neutral to slightly alkaline

Height: 60 – 75 cm

Flowers: June – October

Companion Plants: Zinnia, rudbeckia, calendula

Avoid Planting With: Shade-loving or moisture-demanding plants

 

Sowing Instructions

 

Sow indoors from February to May in trays or pots of moist compost, covering lightly. Maintain 15–20°C for germination. Transplant seedlings when large enough to handle, spacing 30–40 cm apart. Harden off before planting outdoors after the last frost. Alternatively, sow directly outdoors from April to June in prepared soil. Water moderately and deadhead regularly to prolong flowering. Plants thrive in full sun and are drought-tolerant once established.