Lastly, this upright annual that can grow to 4m tall is topped with multi-headed flowers. The flowers have a dark brown centre. And its blooms can range from yellows, autumnal orange, red and warm browns. What’s more is that the pollinators will enjoy it too. As the flowers attract bees and other beneficial insects as well as the edible seeds that birds can eat. Therefore, it’s the perfect addition to a wildlife garden.