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.
Isatis Glauca is a fine and graceful plant, bearing light sprays of yellow flowers. Little known at present, it is likely to become a popular border perennial.
Seed can be got of a good many of the Torch Lilies (Kniphofia or Tritoma), which give so fine an effect in late summer and early autumn. They are unquestionably splendid plants, with their graceful foliage and tall stems surmounted by brilliant spikes of bloom. Uvaria (or Aloides) Grandiflora, orange; Corallina, scarlet; Macowanii, coral dwarf; Rooperi, orange; and Tuckii, bright red, are all popular kinds.
Many flower lovers will certainly try some of the Everlasting Peas {Lathyrus) from seed, particularly the fine modern varieties of Latifolius, such as White Pearl, Pink Beauty, and Splendens.
Lavender may be raised from seed, and this fragrant old favourite makes large bushes, which will be drawn upon freely for cutting.
The Edelweiss (Lentopodium Alpinum), comes readily from seed, and thrives in poorer soil than most Alpines care for.
The "Kansas Gay Feather" (Liatris Pycnostachya) is picturesquely named, and it is a picturesque plant, with its tall stem clothed with bright purplish crimson flowers. L. Spicata, rosy red, is also grown.
The Alpine Toadflax (Linaria Alpina), orange and purple, its variety Rosea, and the "Kenilworth Ivy" (L. Cymbalaria), a pretty white trailer, are useful plants which may be raised from seed.
Linnaea Borealis is a charming trailer which too few people know. It thrives in a shady place, in moist, peaty soil. The pretty rosy pink flowers have an agreeable perfume.
Several species of perennial Flax are available, notably Arboreum, a shrubby, yellow species; Flavum, also yellow; Narbonense, shrubby, blue flowers, Perenne, blue, and its white and rose varieties.
Such fine Lobelias as Cardinalis and its varieties; Fulgens and its varieties (these differ from Cardinalis in having purple foliage); Syphilitica, a fine blue species; and Gerardii, a hybrid between the last named and Cardinalis, are all worthy of being raised in quantity, for they make fine groups and beds.
The Honesty (Lunaria Biennis Or Annua), the rosy purple flowers of which are followed by silvery, flat seed pods, is a very useful plant that may become naturalised, and, though nominally biennial, grow year after year. It is of neat habit, and blooms freely, so that it is worthy of more prominent positions than those which it often fills in the wild garden. There are white, crimson, and variegated-leaved forms of it, all of which may be raised from seed. The seed pods are very useful for winter vases.
 
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