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 Perennial Lupins give us some valuable plants, notably Arboreus, the Tree Lupin, with scented yellow flowers; its white variety Snow Queen, which is a really beautiful plant, bearing large spikes of pure white flowers; and Polyphyllus, blue, and its many varieties, which include white, lilac, blue and white, pale blue, and rose.
The Perennial Campions (Lychnis) are showy plants, none more so than Chalcedonica, scarlet. There are white and pink varieties of it. Coronaria, crimson, with hoary foliage, and its varieties; Flos-Jovis, the Rose Campion, with its white form; Fulgens, a dwarf scarlet species; Haageana, a dwarf scarlet; Lagascae, a beautiful little rock plant with rosy flowers; and Viscaria Splen-dens, the scarlet "Catchfly Campion," are also good.
The Rosy Loosestrife (Lythrum Salicaria Rosea) is a very fine border plant, which luxuriates in moist, cool soil.
The Musk Mallow (Malva Moschata), which produces abundance of pink flowers, and its white variety, Alba, have a good many admirers. Another interesting "Mallow" is Malvastrum Coccineum, which is a rose-coloured trailer suitable for the rockery.
The Welsh Poppy (Meconopsis Cambrica), with its bright pale yellow flowers, is a pretty dwarf plant, and there are orange and double varieties of it. More interesting, perhaps, to many is the Himalayan Poppy (M. Wallichii), a beautiful plant, with large pale blue flowers.
Michauxia Campanuloides, called by some hardy plants-men the Persian Bellflower, is a very beautiful plant, growing three feet high or more, and bearing large white flowers.
The Monkey Flowers (Mimulus) have been recommended previously as handsome plants for shady beds, and suitable for propagation from seed under glass in winter for blooming the same year. But they may be treated as hardy plants if desired.
The Bergamot (Monarda Didyma) may be grown from seed, and perfumed plants are always appreciated.
Morina Longifolia, an evergreen, with rose flowers, is worth growing.
The Forget-Me-Nots (Myosotis) are immensely popular, and there is no wonder, considering how freely and how long they bloom in spring, and how pleasing their blue flowers are.
Alpestris and its white and rose varieties are very popular for beds, and they make a nice carpet for bulbs. There are dwarf selections, with blue and rose flowers respectively, and one with yellow leaves, which make pretty carpets and margins.
Dissitiflora and its white variety are great favourites; they are dwarf and they bloom early.
 
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