Whirling Butterflies’ is an upright herbaceous perennial to about 80cm, producing airy spires of delicate white flowers with long white stamens, opening from pink buds over a long period from late spring to early autumn.
Being a herbaceous perennial, it is dormant during winter then starts to send up the new shoots in early spring. When the shoots reach about 30cm tall, cut them back by half. This creates a more compact, stronger and self-supporting plant that is less likely to flop all over the place, with masses more flower stems. You can expect new flowers to bud between six and seven weeks after pruning. Additionally, you should feed your gaura in the spring with a good-quality all-purpose fertiliser.