blooms bright cheerful cultivar dahlia flamboyant flowers garden head nature passionate perennial petals plant pompom red sanguine showy summer bulbs England english February Galanthus Great Britain hanging pendulant perennials plants snowdrops spring Sussex white blackthorn branch bush natural Prunus shrub stamens tree wild Cardamine pratensis Cruciferae Lady's smock mauve Cornus suecica Dwarf Cornel green herb leaf leaves montane norway norwegian rock Dandelion flower gold hedgerow macro photography organism petal pollen sow thistles weed yellow blue border delphiniums light pale spikes colors colours hedge orange topiary tulips