Buddleja Flowering Time. Its flowers come in many colors though butterflies seem to prefer the lavender-pink mauve of the species to the white and dark purple cultivars. Spring is the best time for propagation but cuttings can be made at anytime except winter.
Other species produce round globes of yelloworange flowers or drooping branches lined with flower clusters. 45 cm drape over the bush in late spring or early summer. 29082020 The white and paler lilacs are wonderful when in full peak but you need only a few of those damp early August days and they start to look like.
Moist but well-drained soil chalk clay sand or loam.
Borne in the leaf axils along the previous years stems the long flower spikes up to 18 in. This also encourages later flowering which is good for butterflies such as the small tortoiseshell. Once Buddlejas have formed flower buds or are in flower cuttings become marginally more difficult to root as the tissues are geared towards flowerseed production. Best flowers appear when plant is severely pruned in late winter.