autumn bi-colored dahlia flower garden nature petals pink plant red two-tone botany bush England english Great Britain petal rosa rose shrub aromatic-shrub Australian Australian-native-flora blooms blossom bracts calyces calyx color colored colors colour coloured colours display displayed evergreen flora flowering flowers foliage full-bloom hardy Lamiaceae large-flowers magnificent-mint-bush magnificent-prostanthera native perennial prostanthera prostanthera-magnifica purple purplish-red-calyces sepals spreading-shrub two-tone-purple Western-Australian-native-flora wild wildflower wildflowers background old paper texture tone yellow bloom camellia green leaf quality spring Sussex