The wild plants of the riverside are in themselves for the most part large of stature and important of appearance. When one sees the upright growth and large leaves of the Great Water Dock (Rumex) and the broad round ones (2 feet or more across) of the Butter-Bur (Petasites), and the beds of the Common Reed (Phragmites), 8 to 10 feet high, with its great brown-black plumes, and the curious bright-green Horsetail (Equisetum), and the rosy banks of Willow-herb and Loose-strife, and the calm wide breadths of the white Water Lily in the still backwaters; when we see all these lessons that Nature teaches by the riverside we perceive that for the best of good effect of waterside gardening we need not be afraid of planting things of bold growth largely.
ALDERS NEAR WATER (Catkin time).
When we come to garden plants there are many families that are never so happy as when close to water, or in soil that always feels the cool, moistening influence of water within a few feet below them. Such are the whole range of the larger herbaceous Spiræas, some of them plants of great size. Then we have the Thalictrums, the autumn-flowering Phloxes, the stately Heracleum; Telekia, Bamboos, Arundo Donax, the Swamp and Meadow Lilies of the northern states of America; and coming to smaller though scarcely less important plants, the Scarlet Lobelias, Oriental Poppies, many Irises, the Michaelmas Daisies, and Day Lilies; all these thrive by the waterside.
WHITE WILLOW (Salix alba) BY WATERSIDE.
There are many shrubs that prefer a moist place, such as the Guelder Rose and the beautiful North American Halesia, Quinces, Rhododendrons, Azaleas, and Kalmias, while the lovely Fritillaries, Globe-flowers, and the double Cuckoo-flowers love damp grassy spaces. We think we may safely advise those who are making gardens by river or lake to go forward and plant with confidence, only selecting such things as are mentioned below.
As the things named are described elsewhere in this book a list only is given.
Trees and Shrubs for Swampy Places
Willows (Salix) in great variety: S. alba (White Willow), S. babylonica (Babylonian Weeping Willow), S. purpurea, S. p. pendula (American Weeping Willow), S. Caprea, S. C. pendula, the fine Kilmarnock Willow, Cardinal Willow and Golden Willow—both these are very beautiful in winter; the stems of the former are crimson, and of the latter golden yellow, and make a remarkable picture of intense colouring; plant them in large groups—S. daphnoides (the White-stemmed Willow), S. fragilis (Crack Willow), S. f. basfordiana (Red-barked Willow), and S. hippophaifolia (Sea Buckthorn-leaved Willow).