Rosebay willowherb, Chamaenerion Angustifolium, Side view of masses of pink flowers beside a canal.

Rosebay willowherb, Chamerion augustifolum, Seeds on umbellifera.

White-flowered rosebay willowherb, Chamaenerion angustifolium 'Album'.

White-flowered rosebay willowherb, Chamaenerion angustifolium 'Album'.

Willowherb, Broadleaved willowherb, Epilobium montanum.

Rosebay willowherb, Chamerion augustifolium, growing wild in Holkham, Norfolk, England.

Rosebay willowherb, Chamerion augustifolium.

Upright seed pod of Broadleaved willowherb, Epilobium montanum, split open to reveal seeds and fine, white hairs which aid wind dispersal.

Upright seed pod of Broadleaved willowherb, Epilobium montanum, split open to reveal seeds and fine, white hairs which aid wind dispersal.

Upright seed pod of Broadleaved willowherb, Epilobium montanum, split open to reveal seeds and fine, white hairs which aid wind dispersal.

Allium, Allium 'Mount Everest'.

Jacobean Lily, Sprekelia formosissima.

Jacobean Lily, Sprekelia formosissima.

Cactus, Pincushion cactus, Mammillaria microhelia.

Ragged Robin, Lychnis flos-cuculi.

Ragged Robin, Lychnis flos-cuculi.

Passion flower, Passiflora caerulea.

Passion flower, Passiflora caerulea.

Cup and Saucer, Cobaea scandens.

Quiver tree, Aloe dichotoma.

Passion flower, Passiflora caerulea.

Osteospermum, Cape Daisy.