The following purely Caucasian species also grow on the coastfive species of spearwort, three of saxifrage, Aster caucasica, Dioscorea caucasica, Echinops raddeanus, Hedera colchica, Helleborus caucasica and Peucedanum caucasicum.
The white Lychnis, the globe thistles Echinops and bronze fennel that has yellow flowers continue also to provide interest and color.
There are various herbaceous plants which may be similarly treated, such as sea-kale and horseradish, and, among ornamental plants, the beautiful autumn-blooming Anemone japonica, Bocconia cordata, Dictamnus Fraxinella - the burning bush; the sea hollies (Eryngium), the globe thistle (Echinops ritro), the Oriental poppy (Papaver orientale), the sea lavender (Statice latifolia), Senecio pulcher, &c. The sea-kale and horseradish require to be treated in the open garden, where the cut portions should be planted in lines in wellworked soil; but the roots of the others should be planted in pots and kept in a close frame with a little warmth till the young shoots have started.