Haw, Hawthorn. See [Cratægus].
Hazel. See [Corylus].
Heartsease. See [Viola].
Heath. See [Erica].
Heather. See [Calluna].
Seeds. Layers. The rooted portions of the vine may be severed and treated as independent plants. Cuttings may be made in autumn from any firm shoots, and inserted in pots or in the open ground. If they are placed in heat and kept shaded until roots are formed, good plants are obtained much sooner than when placed in a cold-frame or in the open air. Named varieties are grafted on the stock of any common strong climbing form.
Hedychium (Indian Garland Flower). Scitamineæ.
Seeds, rarely. Increased by dividing the rhizomes in spring, when the plants are repotted.