Hamamelis arborea (Japanese Witch Hazel), 6 to 10 feet; H. zuccariniana.

Hedera (Ivy). It must not be forgotten that several varieties form bushes. These are known as Tree Ivies, and are invaluable in shady spots.

HIBISCUS SYRIACUS (Althæa frutex), VAR. CÆRULEUS.

Hibiscus syriacus, 6 to 7 feet.

Hydrangea Hortensia (Common Hydrangea), 4 to 8 feet; H. paniculata grandiflora, 4 to 8 feet. Pruned back hard before starting into growth in spring, this can be kept dwarf, and if liquid manure is given the heads of creamy-white flowers in early autumn are very fine.

Hypericum calycinum (Rose of Sharon), 1 foot. Grows well under trees. H. moserianum, 2 feet.

Ilex Aquifolium (Common Holly). A familiar and handsome evergreen tree. The best variegated varieties are Golden Queen, Handsworth Silver, and Silver Queen. I. crenata (Japanese Holly).

Jasminum nudiflorum (Winter-flowered Jasmine), Common White Jasmine. Both for walls or to ramble over some support.

Kerria japonica, 5 feet. This little-known shrub should be more grown; its yellow flowers are small but pretty. Flore-pleno is a popular variety.