Tuberous-rooted perennial plants which are great favourites in green-house cultivation. The tubers may be started into growth in January to April by placing them in a compost of leaf- mould and cow manure, sharp sand and charcoal, in a temperature of 60 degrees.
They should be kept fairly moist, and as soon as the plants are 2 to 3 in. high they should be planted singly in 4-in. Pots. When the pots are filled with roots, larger pots will be necesaary. As soon as the buds appear loss water should be given and the temperature lowered, and when they have finished blooming the plants should be kopt quite dry.
Seed may be sown at the end of January in a temperature of 70 degrees. When the seedlings are large enough to handle they should be pricked off to 1 in. apartv and as they get larger they sbonld be potted singly into 4-in. Pots, increasing the size of the pots as the plants grow. A general temperature of 60 degrees should be maintained. Leaf cuttings may also be struck in a compost similar to that used for seeds.
Good modern varieties are: Her Majesty, white flowers.
Firefly, red and white.
Royal Crimson, waved edges to the orimson petals; Heiiotropium. This is the well-known Cherry Pie, used chiefly for summer tad-ding and pot culture. Reed may be sown thinly in a compost of light, rich loam and leaf-mould. This should be done in early spring in mild heat, and flue plants will then develop for summer and autumn decoration.
Take cuttings in spring or late August. When plants are in pots under glass they should be syringed daily in hot weather. To make bushy plants for bedding the young seedlings and cuttings should be stopped back. In February old plants should be pruned hard back. Give plenty of water during the growing season, but when the plant are resting they should be kept dry. With careful cultivation these plants will thrive well in the cool greenhouse.