Cosmos Seeds

In a wide range of colours and flower shapes, Cosmos are one of the most versatile annuals for a sunny spot in the garden. With such a wide range of varieties, it can be rather difficult to keep up to date with all the new developments with this every so popular species. However, we are excited to bring to you the very best of both, tried and trusted favourites and the latest new delights.

A classic in British gardens, with their large daisy-like blooms. These mid-height, half-hardy annuals have attractive ferny leaves acting as the perfect foil for the flower heads, making them valued as a cut flower. Cosmos look spectacular in beds, borders and pots, flowering from summer right through to the first frosts. They are also loved by pollinators and will attract beneficial insects to the garden.

How to Sow and Grow Cosmos
Sow indoors, for surest results, 0.5cm(1/4in) deep, in trays of compost. Water well and place in a warm position, a temperature of 15-20°C(60-68°F) is ideal. Keep moist. Seedlings usually appear in 14-21 days. Grow on in good light to avoid legginess and thin out into small pots once 2-4 leaves have developed. Harden off young plants over a couple of weeks before planting out, avoiding frosts. Pinch out the growing tips to encourage blooms. Space plants 30cm(12in) apart.

Sow outdoors for ease, where they are to flower, 1.5cm(1/2in) deep into finely prepared soil which had already been watered. Thin seedlings to 30cm(12in) apart. Water well until plants are established.

Deadhead regularly to prolong the flowering season. Most cosmos do well in even poor soil, however for best results add a slow-release fertiliser.

Dazzling through the summer, plants are drought tolerant, thriving in light, poor soil. Richer soils tend to produce more foliage at the expense of blooms. These cup-shaped flowers are perfect for dry, sunny slops and also does well in coastal gardens. If required for indoor displays, cut stems when the buds are in advance, but still furled.