The best vine for covering buildings in the colder climates. Plants should be selected from vines of known habit, as some individuals cling much better than others. Var. hirsuta,* strongly clinging, is recommended by the experimental station at Ottawa, Canada. Var. Engelmanni* has small and neat foliage.
Japanese ivy, Boston ivy, A. tricuspidata (A. Veitchii).
Handsomer than the Virginia creeper, and clings closer, but is often injured by winter in exposed places, especially when young; in northern regions, tops should be protected for first year or two.
Variegated ivy, Ampelopsis heterophylla var. elegans (Cissus variegata).
Handsome delicate hardy grape-like vines with mostly three-lobed blotched leaves and bluish berries.
Garden clematis, Clematis of various species and varieties.
Plants of robust and attractive habit, and gorgeous blooms; many garden forms. C. Jackmani, and its varieties, is one of the best. C. Henryi (Fig. 266) is excellent for white flowers. Clematises bloom in July and August.
Wild clematis, C. Virginiana*
Very attractive for arbors and for covering rude objects. The pistillate plants bear curious woolly balls of fruit.
Wild clematis, C. verticillaris.*