ENCYCLOPHDIA OF GARDENING. 
CULTURE: Compost, equal parts sandy loam, old mortar, broken 
bricks & dry cow manure. Position, well-drained pots, fully exposed 
to sun in warm greenhouse. Repot every three or four years in Feb. or 
March. Water moderately March to Oct., keep quite dry Oct. to 
Mar. Temp., April to Sept. 65 to 75°; Sept. to April 45° to 55°. Pro- 
pagate by portions of fleshy stems 3 in. long cut clean at base & laid on 
sunny shelf to dry for several days, then insert in small well-drained 
pots of sandy soil in tent, of 55° to 65°, April to Aug. 
SPECIES CULTIVATED: Bainii, yellow, Aug., 1 ft., - Africa; Gordonii, 
yellow and purple, July, 18 in., 8. Africa. 
Hop (Humulus lupulus)—See Humulus. 
Hop Hornbeami (Ostrya carpinifolia).—See Ostrya. 
Hop-tree (Ptelea trifoliata).—_See Ptelea. 
Hordeum (Squirrel-tail Grass), Ord, Graminea. Hardy 
annual flowering grass. Nat. N. America. First introduced 1782. 
Inflorescence, barley-like, borne in spikes; June to Sept.; very useful 
for cutting. 
CULTURE: Soil, ordinary. Position, open dryish borders. Propa- 
gate by seeds sown jin. deep in March or April in borders where plants 
are required to flower. 
SPECIES OULTIVATED: H. jubatum, 2 ft. 
Horehound.—See Marrubium. 
Horminum (Pyrenean Dead-nettle)—Ord. Labiate. Hardy her- 
baceous perennial. First introduced 1820. 
CULTURE: Soil, ordinary. Position, open well-drained borders. 
Plant, Oct., Nov., March or April. Propagate by seeds sown 1-16 in. 
deep outdoors in March or April; by division of roots Oct. to March. 
SPECIES OULTIVATED: H. pyrenaicum, blue, summer, 1 ft., Pyrenees. 
Hornbeam (Carpinus betulus).—See Carpinus. 
Horned Poppy (Glaucium luteum).—See Glaucium. 
Horned Rampion (Phyteuma orbiculare).—See Phyteuma. 
Horned Violet (Viola cornuta).—See Viola. 
Horn of Plenty (Fedia Cornucopizwa).—See Fedia. 
Horse Chestnut (#sculus hippocastanum).—See Aisculus. 
Horse Radish (Cochlearia armoracia).—See Cochlearia. 
Horseshoe Vetch (Hippocrepis comosa).—See Hippocrepis. 
Horse-tail.—See Equisetum. 
Hose-in-Hose Polyanthus (Primula elatior var.). — See 
Primula. 
Hottentot Fig (Mesembryanthemum edule).—See Mesembryan- 
themum. 
Hottentot’s Bread (Testudinaria elephantipes).—See Testu- 
dinaria. 
Hottonia (Water Violet)—Ord. Primulaces. Hardy aquatic 
perennial herb. , : 
CULTURE: Soil, ordinary. Position, margins of ponds & rivulets 
or in bogs. Plant, March or A ril. Propagate by seeds sown in 
muddy soil in shallow water in March or April; division of plants 
March or April. ; 
SPECIES CULTIVATED: H. palustris, lilac and yellow, June, 1 ft., Europe 
il). 
oulletia.—Oxd. Orchidaceew. Stove epiphytal orchids. Ever- 
reen. First introduced 1841. Flowers, fragrant. 
CULTURE: Compost, two parts fibrous peat, one part sphagnum. 
Position, baskets suspended from roof of stove, Re-basket, Feb. or 
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