This popular, pure white cosmos is a perfect tall filler plant for a sunny, moist but well-drained border. As long as it's dead-headed regularly it will produce a succession of graceful, pure white, saucer-shaped flowers up to 10cm (4in) in diameter from June to October and masses of feathery, mid-green leaves. With an eventual height of about 1.2m and a spread of about 60cm, this Cosmos variety goes well with Dicentra spectabilis 'Stuart Boothman', Saxifraga x urbium, Linum perenne 'Album', Lychnis coronaria, Stachys byzantina and Gysophilia paniculata 'Bristol Fairy'

Position: Full sun
Soil: Moderately fertile, moist, well-drained
Rate of growth: Average
Flowering period: June to October
Flower colour: Pure white
Other features: Excellent cut flowers
Hardiness: Half-hardy annual
Garden care: Stake with ring stakes well before the flowers appear and dead-head regularly to prolong flowering.

To buy this plant, check out the Crocus website where you can buy three plants in three-litre pots for £12.00 .