Adults are particularly fond of nectar-rich flowers with a long and narrow calyx like centranthus
, jasmine, buddleia, nicotiana, primula, violets, lilacs, verbena, phlox and stachys, and they will often feed on window-box displays too, allowing quite a good opportunity to be admired - or scare some people to death, it seems.
Jagged Onopordum rose up through a plump quilt of pale blue Geranium phaeum Walkure and Centranthus
lecoqii -- a delightful Valerian, duskier in colour and the best, apparently, for attracting the hummingbird hawkmoth.
Also consider the New Zealand flax (Phormium), Sedum spectabile (ice plants), phlomis, Lavatera maritima, Kniphofia caulescens (a form of red-hot-poker), Centranthus
ruber, Japanese anemones, eryngium, agapanthus and Euphorbia characias.
Clouds of pink Centranthus
(Valerian) bounce over the borders from a wildflower selection and along side it grow spires of Delphiniums in pinks, milk-white, royal-lapis and sky-blue, the flowers packed in tight offering a sumptuous sight.
SCARLET VALERIAN The valerian or centranthus
will grow anywhere.