Cheiranthus Alpinus.—Alpine Wallflower. A dwarf plant, very suitable for edging.
HERBACEOUS GROUPING
Linum Flavum.—Yellow Flax. A hardy little plant with gaily-coloured blossoms.
Œnothera Macrocarpa.—A dwarf evening Primrose with trailing stems on which the large flowers are freely produced. It is perhaps better known as Oe. missouriensis.
The majority of the above flowers are pure yellow in colour. Variety would of course be given by including others varying from deep orange to pale sulphur. An extended list is impossible in the limited space, the object being to suggest a few flowers in the principal colours; however, there will be no difficulty in finding others equally suitable.
Plants with Blue Flowers
Aconitum.—Monk’s Hood. Well-known, old-fashioned perennials, with poisonous roots. Among the best for this section are A. chinense and A. Napellus, the former continuing in bloom until the end of September.
Delphiniums.
Eryngium.—Sea Holly. These strong growing plants, with their beautiful steel-blue stems and foliage, should be in every collection. The flower heads can be dried and used for winter decoration. E. Oliverianum.