for rockeries, as it only grows to the height of 6 in. G. Shallon
attains the height of 2 ft.

Gaura Lindheimeri.--This free-flowering, hardy, herbaceous plant will
thrive in any light, rich soil. It bears elegant spikes of white
flowers from May onwards, followed by red bracts in September, and is
readily propagated by seeds. Height, 4 ft.

Gazania Splendens.--A showy greenhouse plant. It may be planted in the
open in warm positions, but will require protecting in winter. Grow it
in peat and loam. Cuttings will strike if placed in sand under glass.
It flowers in July. Height, 1 ft.

Genethyllis.--Greenhouse evergreen shrubs which thrive best in sandy
loam and peat. Cuttings of the young wood planted in the same soil and
plunged in heat will take root. Their flowering season is in August.
Height, 3 ft.

Genista (_Broom_).--G. Canariense is an exceedingly ornamental and
free-flowering greenhouse shrub. It should be planted in a mixture of
loam, peat, and sand. Young cuttings inserted in sand under a glass
take root readily. It blooms in June. Height, 2 ft. Hardy species of
Genista may be placed in the front of shrubberies. They are increased
by seeds or by layers.

Gentians.--The herbaceous kinds do best in a light, rich soil, such as
loam and peat mixed with vegetable mould. The annuals are raised from
seed sown as soon as it is ripe; if left till spring before it is sown
it will probably not come up till the second year. The perennials are
increased by dividing the roots. Both of the latter kinds do best in
a dry, sandy soil. Gentiana Acaulis, or Gentianella, is very suitable
for edgings, or for rock-work; it is an evergreen creeper, and bears
large trumpet-shaped flowers of rich ultramarine blue. All the
Gentians need plenty of free air, and some of them moisture at the
roots. Bloom in July. Height, 4 in. to 2 ft.

Geranium Argentium(_Silvery Crane's-Bill_).--This hardy perennial
alpine is very effective on rock-work, especially in front of dark
stones; but provision must be made for its long tap roots. A rich,
deep loam suits it well. Its seeds germinate freely when sown in peat
and sand. Flowers are borne from May to July. Height, 6 in.

Geraniums.--Take cuttings in July or August, and let them he to
partially dry for twenty-four hours before planting. When rooted pot
them off in 60's, and keep them under glass during the winter at a
temperature of 55 degrees. If the cuttings are taken in September put
th