January Image 1 of 2 Helleborus argutifolius holly-leaved hellebore February Image 1 of 3 Narcissus Cyclamineus cyclamen–flowered daffodil March Image 1 of 3 Narcissus bulbocodium hoop petticoat daffodil April Image 3 of 3 iris x hollandica dutch iris May Image 1 of 3 Wisteria floribunda Japanese wisteria