This section is from the book "The Garden Week By Week Throughout The Year", by Walter P. Wright. Also available from Amazon: The Garden Week by Week Throughout the Year.
The great majority of rock plants love sunshine. It is one of the life-giving elements of the Alpines in their mountain homes. Rock gardens should never be made in shade, but where a natural rockery exists it may be beautified by adding a few carefully chosen plants. The following will thrive in shade, if they are not subjected to the constant drip of water:
Yellow, a dwarf spring bloomer.
The silky purple Pasque Flower, a spring bloomer.
„ Nemorosa, blue, white and rose, charming little spring bloomers.
In many varieties, spring bloomers.
Bears yellow flowers most of the summer and autumn.
An exquisite little rose-coloured species, which may be planted in autumn, and will bloom freely in winter and spring.
Hardy terrestrial Orchids, which love a moist, shady position and peaty soil.
Calceolus, brown and yellow; Macranthum, rosy purple; Pubescens, downy; and Spectabile (Moccasin Flower), with lovely pink and white flowers, are amongst the best species.
Pretty bulbs, which may be bought and planted in autumn. Ferns of many kinds, notably the Lady Fern in variety. The Ostrich and Royal Ferns are magnificent in special positions, but are much too large for small rockeries.
Also need special places, as they are too large for association with ordinary rock plants.
A white summer bloomer.
White flowers in summer and red berries in autumn.
A spring bloomer with brilliant blue flowers.
Blue, rose and white, single and double, exquisite little plants, which will thrive under trees.

The perennial Candytuft, Iberis sempervirens, a good and inexpensive plant for ROCK WORK. It covers a considerable area quickly, and looks charming on the face of a large stone.
Blue, spring bloomer.
Blue, spring bloomer.
Of several kinds, such as Alpestris, Rupicola, Dissitiflora, and Sylvatica.
Blue, a spring bloomer.
A very distinct and pleasing little plant, with scarlet flowers, quite dwarf, and blooming in late spring.
White flowers in summer, a great lover of moisture.
Blue, spring bloomer.
 
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