ENCYCLOPEDIA OF GARDENING. 
rockeries. Sow seed fin. deep in patches where required to grow 
in April. Thin seedlings 1 to 2in. apart when }1n. high. Water 
freely in dry weather. Mulch with decayed manure or cocoanut-fibre 
refuse in June. Semel 
SPECIES OULTIVATED: P. californicus, yellow, July, 1 ft., California. 
Pleione.—See Cologyne. 
Pleroma.—See Tibouchina. 
Pleurisy-root (Asclepias tuberosa).—See Asclepias. 
Pleurothallus.—Ord. Orchidacee. Stove epiphytal orchids. 
First introduced 1826 
CULTURE: Compost, sphagnum moss only. Position, small blocks 
of wood suspended from roof. Place layer of moss on block, then roots 
of plant, then another layer of moss, & secure with copper wire. Water 
abundantly, March to Oct., moderately afterwards. Shade from 
sun. Syringe blocks 2 or 3 times daily in summer; once daily in 
winter & autumn. Temp., Nov. to March 45° to 55°; March to Nov. 
55° to 60°. Propagate by division, Feb. to March. 
SPECIES CULTIVATED: P. barberiana, yellow, purple and white, spring, 4 to 
6 ft., S. America; ornata, yellow, purple and white, April, Trop. America; 
punctulata, yellow, purple and brown, spring, Colombia; Roezlii, blood purple, 
spring, Colombia. 
Plum.—See Prunus. 
Plumbago (Leadwort; Cape Leadwort).—Ord. Plumbaginacea. 
Stove & greenhouse evergreen flowering shrubs. First introduced 
1596. 
CULTURE OF STOVE SPECIES: Compost, equal parts fibrous peat 
& leaf-mould, half a part each loam & sand. Position, pots, shoots 
trained to stakes or balloon trellis, or in borders, shoots trained to 
wall in light part of stove. Pot, Feb. to April. Prune shoots mode- 
rately in Jau. Water freely, April to Oct., moderately afterwards. 
Syringe daily, March to Sept. Shade from sun. Temp., March to 
Oct. 75° to 85°; Oct. to March 55° to 65°. 
CULTURE OF GREENHOUSE SPECIES: Compost, two parts 
fibrous loam, half a part each of silver sand. Position, pots, shoots 
trained to stakes or trellis; borders with shoots trained up rafters, 
illars, or walls in light part of house. Pot or plant, Feb. or March. 
Gaus shoots to within lin. of base immediately after flowering; 
flowers borne on points of shoots of current year’s growth. Water 
copiously, March to Sept.; moderately, Sept. to Nov.; very little 
afterwards. Syringe daily until flowering begins. Apply weak stimu- 
lants twice a week during flowering period. Shade only from very 
bright sun. Temp., March to Oct. 55° to 65°; Oct. to March 40° 
to 50°. Propagate by seeds sown on surface of sandy peat & slightly 
covered with fine sandy soil in temp. 65° to 75° in Feb. or March; 
cuttings of side shoots, 2 to 3in. long, inserted singly in 2-in. pots of 
sandy pout in temp. 60° to 70°, Feb. to Aug. 
STOVE SPECIES: P. rosea, rose, winter, 2 ft., India, 
GREENHOUSE SPECIES: P. capensis, blue, summer, 10 to 15 ft., S. Africa; 
capensis alba, white. 
HARDY SPECIES: See Ceratostigma. 
Plume Poppy (Bocconia cordata).—See Bocconia. 
Plum Fir (Prumnopitys elegans).—See Prumnopitys. 
Plumiera (Frangipanni Plant).—Ord. Apocynacesw. Stove ever- 
green flowering shrubs. First introduced 1690. 
CULTURE: Compost, two parts sandy loam, one part fibry peat, 
half a part silver sand. Position, well-draihed pots in light stove, 
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