ENCYCLOPEDIA OF GARDENING. 
Himalayan Primrose (Primula sikkimensis)—See Primula. 
Hindsia.—0Ord. Rubiacez. | Stove evergreen flowering shrubs. 
First introduced 1844. 
CULTURE: Compost, equal parts rough fibious peat, light loam, 
silver sand & charcoal. Position, well-drained pots in light stove. 
Pot, Feb. or March. Water freely April to Sept., moderately after- 
wards. Prune into shape, Feb. Temp., Feb. to Aug. 65° to 75°; 
Aug. to Nov. 60° to 70°; Nov. to Feb. 55° to 65°. Propagate by cut- 
tings of firm shoots inserted in well-drained pots of pure silver sand 
under bell-glass in peng 65° to 75° in March or June. 
__ SPECIES CULTIVATED: H. longiflora, blue, summer, 2 to 3 ft., Brazil; and 
its varieties alba (white); violacea, violet blue, May, 3 ft., Brazil. 
Hippeastrum (Barbados Lily; Knight’s Star Lily; Mexican 
Lily).—Ord. Amaryllidacee. Stove bulbous plants, popularly known 
as Amaryllises. Deciduous. First introduced 1677. 
CULTURE: Compost, two parts turfy loam, one part river sand & 
a few crushed bones. Position, well-drained pots in light part of 
stove. Pot, Jan., burying bulb about two-thirds of its depth. Water 
freely from time growth begins (about Feb.) until July, when keep 
quite dry. Apply liquid manure when flower spike shows. Top-dress 
large bulbs annually & repot every three or four years only. ‘emp., 
Feb. to Sept. 65° to 75°; Sept. to Feb. 50° to 55°. Propagate by seeds 
sown 1-16in. deep in well-drained pots of sandy loam in temp. 65° to 
70° in March, placing seedlings singly in 2-in. pots & keeping them 
moderately moist all the year round for three years; by offsets treated 
as old bulbs. Seedlings are three years or so before they flower. 
SPECIES OULTIVATED: H. aulicum, crimson and orange, winter, 2 ft., Brazil; 
equestre, red, summer, 18 in., Trop. America; Leopoldii, crimson and white, spring, 
1 ft., Peru; pardinum, green, yellow and scarlet, spring, 2 ft., Peru; psittacinum, 
orange and scarlet, summer, 2 ft., Brazil; Regine, red_and white, spring, 2 ft., 
8. America; reticulatum, rose or scarlet, spring, 1 ft., Brazil; vittatum, crimson 
and white, spring, 2 ft., Peru. Numerous hybrids, more beautiful than the species, 
will be found in trade lists. 
Hippocrepis (Horse-shoe Vetch).—Ord. Leguminose. Hardy 
evergreen trailing herb. 
CULTURE: Soil, ordinary. Position, sunny rockeries or elevated 
borders. Plant, March or April. Propagate by seeds-sown 1-16 in. 
deep in fine soil in sunny position outdoors in March or April; division 
of roots in March. 
SPECIES CULTIVATED: H. comosa, yellow, May to Aug., Europe, Africa, etc. 
Hippophae (Sea Buckthorn; Sallow-thorn).—Ord. Eleagnacee. 
Hardy deciduous berry-bearing shrub. Male & female flowers borne 
on separate plants. Both must be grown to ensure a crop of berries. 
Berries, orange; autumn & winter. 
CULTURE: Soil, ordinary. Position, open or shady shrubberies & 
inland or seaside gardens. Plant, Oct. to Feb. Propagate by seeds 
sown +in. deez outdoors in Nov. or Dec.; by cuttings of roots inserted 
in Feb. or March in ordinary soil outdoors; layering shoots in autumn. 
SPECIES CULTIVATED: H. rhamnoides, yellow, May, 8 to 12 ft., Europe. 
Hippuris (Mare’s-tail). — Ord. Haloragacer. Hardy aquatic 
perennial. Orn. foliage. Leaves, narrow, strap-shaped; in circles 
round the stem. 
CULTURE: Soil, mud. Position, bogs, ponds, or damp places. 
Plant, March to June. Propagate by division of roots, March. 
SPECIES CULTIVATED: H. vulgaris, 8 to 12 in., Europe (Britain). 
Hodgin’s Holly (Ilex Hodginsii)—See Tlex. 
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