Alstroemeria Alstroemeriaceae colorful colourful exotic flowers garden nature orange peruvian lily pink plant red rich summer yellow bloom blooms blossom blue bush England flower flowerhead flowerheads hydrangea pompom shrub Sussex cultivar english Great Britain natural petals rhodedendron rhododendron spring woodland Astrantia flower head head petal stamen stamens white cranesbill drops geranium leaf mauve plants rain water branch Davidia involucrata pocket handkerchief tree twig Aconitum grow monkshood perennial Ranunculaceae spikes tall a bleeding gardens heart hearts on string bright colorado Columbine dark float green July leaves purple