The interior of ornamental plant structures can be much improved in appearance and rendered much more interesting by having graceful festoons of climbing plants depending from the roof. A series of curved iron rods covered with vines produce an agreeable effect, and break up the usual monotonous internal arrangement of glass houses. Plants for this purpose may be planted out in small prepared borders or beds of soil, but, as a matter of convenience, it is more desirable to plant them in pots or boxes of suitable dimensions, which can be placed in positions where their appearance will not be conspicuous. The limitation of root room is also of advantage in causing a tendency to flower, and diminish the luxuriance of wood growth, which is a constant source of annoyance when the roots have unlimited freedom. There are many hardy climbing plants well adapted for such situations when grown in pots. The Bisnonia Capreolata, which is rather tender for northern latitudes, is a fine evergreen climber, so is the sweet yellow Carolina Jasmine, Gelseminum nitidam. The Akebia quinata, five-leaved Akebia, with clusters of small blue flowers and beautiful foliage, and the Chinese Wistaria are also very suitable.

Amongst others more strictly requiring greenhouse protection may be mentioned the following: Ipomea Learii, and I. Horsfallii, Bignonia Lindleyii, or Picta, as it is named in some collections, Passiflora alata, a vigorous grower, P. racemosa, P. Kermesina and P. Loudonii, Tacsonia manicata, Lophospermum Hendersonii, Kennedya prostrata, E. mono-phylla, K. Marryatta, and K. nigricanus, Sollya heterophylla, Tropaeolum Lobbiana flowering all the winter, Dolichos lignosus, Eccremocarpus scabre, and Brachysema latifolia. Plants of more tender constitution, and usually grown in hothouses (but which do as well in a greenhouse when attention to watering during winter is given, requiring to be kept very dry, that is, they should receive no more water than sufficient to preserve them from shrivelling during the coldest season), are the following: Mandevilla suaveolens, a very choice sweet-scented flowering plant, Allamanda cathartica, Stephanotis floribunda, Bignonia venusta, Combretum purpurea, Hoya carnosa, and H. imperialis, Schubertia Graveo-lenB, and Stigmaphillea ciliata. Much of their beauty depends upon the care and skill exercised in training.

While no appearance of negligence should be tolerated, still there should appear a natural freedom of growth; this will in some measure be secured by tying in only such shoots as are strong, leaving secondary laterals to hang loosely around. Climbing plants are frequently objected to on account of their harboring insects, and the difficulty of keeping them clean. When this happens they should be pruned severely and the plant thoroughly cleaned, or, which is one of the advantages of having them in pots, they can be substituted by something else.