This section is from the book "How To Make A Flower Garden", by Wilhelm Miller. Also available from Amazon: The Well-Tended Perennial Garden: Planting and Pruning Techniques.
Easily grown from cuttings of firm green wood, which, when rooted, may be planted in ordinary potting soil. Frequent changes of pots and additions of fresh soil are necessary, and so are light and fresh air. Cuttings taken in February and kept growing vigorously should become fine plants by the following winter, during the latter part of which they should blossom freely.
Plant seeds in ordinary soil in the autumn, and in the spring thin or transplant the seedlings to stand from one to two feet apart, according to variety. Though doing est upon good soil, the plants will yield well upon soil too poor for most garden flowers. When once established, they may be increased by means of offsets. See also Montbretia.
Plant roots when the ground can be worked in spring, choosing rather good soil. The plants do well for years without further attention than an annual manuring and the removal of weeds.
Sow seed as soon as ripe, where the plants are to remain in rich loamy soil sheltered from the wind, but exposed to the sun. Do not disturb. Leaves die after the plants flower. Plants do not propagate well by division.
See Poppy, Plume.
Sow seeds in fall or spring where the plants are to stand, choosing the rear of borders and places where the bad smell of the plants will not be noticed, and where the attractive foliage and flowers will show off well. Thin the plants to stand from two to four feet apart. Established plants may be divided in fall or spring.
Easily propagated by division or by seeds. Ajuga replans succeeds well in shady places, but may spread too fast.
Plant the bulbs in early autumn, choosing rather light, fairly rich soil and sinking the bulbs two inches deep. Allow the foliage to die naturally each spring after flowering. Every second or third year dig up, clean, store in a cool, airy place until planting time. Does well in lawns, since the foliage usually dies before the lawn needs mowing. It should bloom a week before the crocuses.
Sow seeds in a mild hotbed or greenhouse in early spring, transplant the seedlings when about two inches tall to small pots, and when the weather becomes settled place in the garden in any good soil. They may also be sown in the open ground if desired. Allow about a foot between plants. For winter bloom sow seed in midsummer and transplant frequently as the plants need more pot space. They should flower from mid-winter till spring.
See Elephant's Ear.
The hybrid kinds may be grown from seed sown in the greenhouse in late winter, the seedlings being transferred to pots as soon as they are large enough to handle, and set in rather shady locations when the weather becomes settled. The plants are usually grown as greenhouse specimens, the seeds being sown in midsummer in partial shade. For best results they should receive no check, but be given rather frequent changes of pots until near flowering time, when they may be allowed to become pot-bound.
A popular name for certain kinds of Coreopsis, which see.
Sow seeds in greenhouse or hotbed, and when about two inches high transplant from six to twelve inches apart in good garden soil; for later blossoms sow when the soil becomes warm; for winter, sow in August. Biennial and perennial species and varieties are also propagated as above, but the latter are more frequently reproduced by stem cuttings in the greenhouse or by division.
File holes in the seeds and soak them in warm water for about a day before sowing singly in pots under glass in late winter. When six or eight inches tall, transplant from two to six feet apart in any soil, light and rich preferred. In autumn dig up the clumps, dry them for a few days in an open shed, and store in a warm, dry, airy cellar. During winter divide the clumps of desirable seedlings or of named varieties, allowing at least one eye to each piece, and plant in pots for transplanting to the garden in late spring. These give earliest effects. The divisions or the whole clumps may be set direct in the garden, but are later in producing effects.
Sow seeds under glass in late winter, and when a few inches tall transplant to moist soil, especially on the borders of marshes and streams. When once established they will continue from year to year. Strong plants may be divided; and vigorous, stocky shoots may be used for greenwood cuttings. When used in beds and borders, the plants should stand at least eighteen inches apart.
Start seed in hotbed singly in pots and transplant from four to ten feet apart, when about six inches tall, after danger of frost has past, or sow direct in garden when soil becomes warm. Dry, rich, deep soil is best.
Sow seeds in a mild hotbed or greenhouse in early spring, transplant the seedlings when about two inches tall, and again to the garden when the weather becomes settled. Seeds may also be planted where the plants are to remain. Allow about eighteen inches between plants. They do well in light soil.
Cblosia. See Cockscomb.
Sow seed in early spring, choosing sandy soil where the plants are to remain. Provide a wire trellis upon which the vines may twine five or six feet.
See Marguerite, Golden.
See Glory of the Snow.