A giant among annuals. Give them plenty of room and you will be rewarded with plants up to 3m (10ft) tall with huge yellow flowers often 30cm(12in) in diameter. Useful to grow against an unsightly shed or fence. Birds love the seeds so grow a few plants close to the house and watch them feed in the autumn. Flowers summer. Height 8-10ft.
Culinary note: Some parts of these flowers are edible. Try toasting the seed kernels for a healthy snack.
Companion planting: Try growing sunflowers with chives to deter aphids.