Cosmos Mandarin Seeds

 

Cosmos Mandarin – Cosmos sulphureus

A compact, fiery cosmos with glowing mandarin-orange blooms — perfect for borders, containers, and pollinator-friendly gardens.

Cosmos Mandarin is a half-hardy annual that produces masses of daisy-like flowers in vivid orange with golden-yellow centres. Its finely divided foliage and upright habit make it a striking choice for summer bedding, wildlife gardens, and cut flower arrangements. Unlike taller cosmos, this variety is more compact and bushy, making it suitable for smaller gardens and patio pots. Heat- and drought-tolerant once established, it flowers continuously from midsummer to early autumn, attracting bees, butterflies, and other pollinators.

 

Seed Qty: Approx. 30

 

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

Germination: 7 – 14 days at 18–21°C

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

Height: 60 – 100 cm

Flowers: June – October

Companion Plants: Zinnia, calendula, rudbeckia

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

Growing Notes

Sow indoors from February to May in trays or pots of moist compost, covering lightly. Maintain 18–21°C for germination. Transplant seedlings when large enough to handle, spacing 25–30 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 poor to moderately fertile soils.