autumn and planted in a shady, sheltered spot. Caprifolium Brachypoda
and the evergreen C. Sempervirens are handsome, free-flowering kinds,
suitable for almost any situation. C. Aurea-reticulata has beautifully
variegated leaves, which render it very ornamental. Height, 6 ft. to 8
ft.
Hop.--A useful hardy climber for covering verandahs, summer-houses,
etc. Plant in rich, loamy soil, and increase by dividing the roots.
(See also "Humulus Japonicus.")
Hordeum Jubatum (Squirrel-tail Grass).--A very pretty species
resembling miniature barley. Sow seed in March, covering it very
lightly, and keep the surface of the soil moist till the grass
appears. Height, 1-1/2 ft.
Horminum Pyrenaicum.--This hardy perennial produces erect white
flowers with blue corolla in June or July. It will grow in any
ordinary soil, but needs protection in winter, as it is apt to be
injured by damp. It may be propagated either by seed or division.
Height, 1-1/2 ft.
Horn Poppy.--See "Glaucium."
Horseradish.--Plant in October or February in deep, rich soil; or it
may be grown on a heap of cinder-ashes, or on any light ground through
which the roots can make their way readily. The best way to increase
it is by slips taken from the roots. It requires little or no
attention beyond pinching out the tops when running to seed and
keeping the ground hoed.
Hotbeds, to Make.--Take dead leaves and stable-straw, with the dung,
in the proportion of two double loads for a three-light frame. Turn it
over four or five times during a fortnight, watering it if it is dry.
Then mark out the bed, allowing 1 ft. or more each way than the size
of the frame. Shake the compost well up, and afterwards beat it down
equally with the fork. Place the frame on the bed, leaving the lights
off for four or five days to allow the rank steam to escape. Keep a
thermometer in the frame, and as soon as the temperature falls below
70 degrees apply a lining of fresh dung to the front and one side of
the bed, and when this again declines, add another lining to the back
and other side, and so on from time to time as occasion requires. The
mats used for covering the frames in frosty weather should be made to
fit the top, and not hang over the sides.
Houseleek.--See "Sempervivum."
Houstonia Coerulea.--These hardy little evergreens are more generally
known as Bluets. They make charming ornaments for rock-work, planted
between large stones, but in this position they need protection from
severe frosts. When planted in pots and placed in a cold frame they
show to most advantage. A mixture of leaf-mould and sand, and a
moist but well-drained situation is what they delight in. They bloom
continuously from April to July. Height, 3 in.