Aquilegia flowers come in many shades of pink purple red and white but the unusual 39yellow star39 steals the show with its vibrant blooms these lemon granny39s bonnets appear in may june and july to brighten up borders rockeries or woodland gardens and attract pollinators they also make superb cut flowers for those who want to bring the beauty of a cottage garden into the cottage itself columbines are extremely easy to grow requiring only sunlight and rich well drained soil