Height, 18 in.
Geum.--Very handsome hardy perennials. They grow well in any light,
rich, loamy soil, and may be increased either by seeds or by dividing
the roots. G. Coccineum is extremely pretty. Flower in July. Height,
18 in.
Gherkins.--Sow the seed the first week in April in small pots, and
cover it lightly with fine soil. Plunge the pots in a hotbed covered
with a frame. When grown to nice little plants, remove them to a cold
frame to harden, and plant them out on a warm border towards the end
of May. When the fruit begins to form, give liquid manure twice a
week. For pickling they must be cut while small.
Gilia.--Extremely pretty and free-flowering hardy annuals, deserving
of a place in every garden. They are very suitable for small beds.
They should be sown in the open early in spring. G. Tricolour may be
sown in autumn. Bloom in July. Height, 1 ft.
Gillenia Trifoliata.--The Three-Leaved Gillenia is a hardy herbaceous
perennial which is very useful as a cut flower for the decoration of
vases, etc. It should be grown in large clumps, delights in a deep,
moist soil and partial shade, and may be propagated by dividing the
roots early in spring. It lasts in bloom from June to August. Height,
1 ft.
Gladiolus.--Dig the ground out to a depth of 1 ft. or 15 in.; put in
a layer of leaf-mould or rotted manure, and then 4 or 5 in. of earth
mixed with sand; insert the bulbs (6 in. from the surface and 9 in.
apart), cover them with 1 in. of sand, and fill up with earth. In
frosty weather cover with a thick layer of litter. Give plenty of
water when they begin to throw up their flower-stems. They may be
planted at any time between December and the end of March. If planted
late in the season, a depth of 3 or 4 in. is enough. The roots must
be kept dry in winter. They are increased by off-sets, taken when the
bulbs are removed from the ground after the leaves have turned yellow.
These should be planted at once in well-drained earth. If early
flowers are required, plant the old bulbs in pots (three to six bulbs
being placed in a 5-in. pot) any time between December and March. Give
them frame culture up to the second week in May, when they may be
transferred to the border. The flowers are invaluable for vase
decoration.
Glaucium Flavum Tricolor (Hardy Horn Poppy).--The large, brilliant,
orange-red flowers of this plant are very effective in the border, and
the bloom is continuous during the greater part of the summer. The
seed is rather slow to germinate, but when sown in the open ground in
autumn, it blooms from June to August; when sown in early spring it
flowers from July to September. Height, 2 ft.
Glaux Maritima (Sea Milkweed).--A pretty little hardy trailing plant
bearing flesh-coloured flowers in June and July. It grows in sandy
loam, and is raised from seed sown in spring. Height, 3 in.