Guernsey Lily (_Nerine Sarniense_).--Soil, strong, rich loam with
sand, well drained. Plant the bulbs deeply in a warm, sheltered
position, and let them remain undisturbed year by year. Keep the beds
dry in winter, and protect the roots from frost. They also make good
indoor plants, potted in moss or cocoa-nut fibre in September, or they
may be grown in vases of water.
Gumming of Trees.--Scrape the gum off, wash the place thoroughly with
clear water, and apply a compost of horse-dung, clay, and tar.
Gunnera Manicata (_Chilian Rhubarb_).--This hardy plant bears large
leaves on stout foot-stalks, and is very ornamental in the backs of
borders, etc. Planted in a rich, moist soil, it will flower in August.
It can be propagated by division. Height, 6 ft.
Gunnera Scabra.--Has gigantic leaves, 4 to 5 ft. in diameter, on
petioles 3 to 6 ft. in length. It prefers a moist, shady position, and
bears division. Makes a fine addition to a sub-tropical garden, where
it will flower in August. Height, 6 ft.
Gynerium (_Pampas Grass_).--This unquestionably is the grandest of all
grasses, and is sufficiently hardy to endure most of our winters. It
is, however, desirable to give it some protection. It requires a deep,
rich, alluvial soil, with plenty of room and a good supply of water.
Plants may be raised from seed sown thinly in pots during February or
March, barely covering it with very fine soil, and keeping the surface
damp. Plant out at end of May. They will flower when three or four
years old. The old leaves should be allowed to remain on till the
new ones appear, as they afford protection to the plant. It may be
increased by division of the root. Height, 7 ft.
Gypsophila.--Of value for table bouquets, etc. They will grow in any
soil, but prefer a chalky one. The herbaceous kinds are increased by
cuttings; the annuals are sown in the open either in autumn or spring.
They bloom during July and August. Height, 1 ft. to 3 ft.
H
Habrothamnus.--These beautiful evergreen shrubs require greenhouse
culture, and to be grown in sandy loam and leaf-mould. The majority of
them flower in spring. Height, 4 ft. to 6 ft.
Halesia Tetraptera (_Snowdrop Tree_).--This elegant shrub will grow in
any soil, and may be propagated by cuttings of the roots or by layers.
The pendent white flowers are produced close to the branches in June.
Height, 8 ft.
Hamamelis (_Witch Hazel_).--An ornamental shrub which will grow in
ordinary soil, but thrives best in a sandy one. It is increased by
layers. May is its season for flowering. Height, 12 ft. to 15 ft. H.
Arborea is a curious small tree, producing brownish-yellow flowers in
mid-winter.
Harpalium Rigidum.--A hardy perennial, producing very fine yellow
flowers in the autumn. It will grow in any good garden soil, and may
be propagated by seed sown in early autumn, or by division of the
roots. Height, 3 ft.