In the South and in California, great use is made of vines, not only on fences but on houses and arbors. In warm countries, vines give character to bungalows, pergolas, and other individual forms of architecture.
If it is desired that the vines climb high, the soil should be fertile; but high climbing in annual plants (as in sweet peas) may be at the expense of bloom.
The use of vines for screens and pillar decorations has increased in recent years until now they may be seen in nearly all grounds. The tendency has been towards using the hardy vines, of which the ampelopsis, or Virginia creeper, is one of the most common. This is a very rapid grower, and lends itself to training more readily than many others. The Japan ampelopsis (A. tricuspidata or Veitchii) is a good clinging vine, growing very rapidly when once established, and brilliantly colored after the first fall frosts. It clings closer than the other, but is not so hardy. Either of these may be grown from cuttings or division of the plants.
Two recommendable woody twiners of recent distribution are the actinidia and the akebia, both from Japan. They are perfectly hardy, and are rapid growers. The former has large thick glossy leaves, not affected by insects or disease, growing thickly along the stem and branches, making a perfect thatch. It blooms in June. The flowers, which are white with a purple center, are borne in clusters, followed by round or longish edible fruits. The akebia has very neat-cut foliage, quaint purple flowers, and often bears ornamental fruit.
Of the tender vines, the nasturtiums and ipomeas and morning-glories are the most common in the North, while the adlumia, balloon vine, passion vine, gourds, and others, are frequently used. One of the best of recent introduction is the annual hop, especially the variegated variety. This is a very rapid-growing vine, seeding itself each year, and needing little care. The climbing geraniums (Pelargonium peltatum and its derivatives) are much used in California. All the tender vines should be planted after danger of frost is past.
So many good vines are now on the market that one may grow a wide variety for many uses. The home gardener should keep his eyes open for the wild vines of his neighborhood and add the best of them to his collection. Most of these natives are worthy of cultivation. Even the poison ivy makes a very satisfactory cover for rough and inaccessible places in the wild, and its autumn color is very attractive; but of course its cultivation cannot be recommended.
Vines that cling closely to walls of buildings are Virginia creeper (one form does not cling well), Boston or Japanese ivy (Ampelopsis tricuspidata; also A. Lowii, with smaller foliage), English ivy, euonymus (E. radicans and the var. variegata), and Ficus repens far south; others that cling less closely are trumpet creeper, and climbing hydrangea (Schizophragma hydrangeoides).
Vines for trailing, or covering the ground, are periwinkle (Vinca), herniaria, moneywort (Lysimachia nummularia), ground-ivy (Nepeta Glechoma), Rosa Wichuraiana, species of native greenbrier or smilax (not the so-called smilax of florists), Rubus laciniatus, dewberries, and also others that usually are not classed as vines. In the South, Japanese honeysuckle and Cherokee rose perform this function extensively. In California, species of mesembryanthemum (herbaceous) are extensively used as ground covers on banks. Page 86.
For quickly covering brush and rough places, the many kinds of gourds may be used; also pumpkins and squashes, watermelons, Cucumis fœtidissima, wild cucumbers (Echinocystis lobata and Sicyos angulata), nasturtiums, and other vigorous annuals. Many of the woody perennials may be used for such purposes, but usually these places are only temporary.
For arbors, strong woody vines are desired. Grapes are excellent; in the South the muscadine and scuppernong grapes are adaptable to this purpose (Plate XV). Actinidia and wistaria are also used. Akebia, dutchman’s pipe, trumpet creeper, clematis, honeysuckles, may be suggested. Roses are much used in warm climates.