ENCYCLOPEDIA OF GARDENING. 
Propagate by inserting portions of creeping stems’ in muddy soil in 
nds where required to grow. 
SPECIES OULTIVATED: P. virginica, 1 ft., N. America, 
Peltaria.—oOrd. Crucifere. Hardy herbaceous perennial herb. 
First introduced 1601. Plant, garlic-scented. 
CULTURE: Soil, ordiuary. Position, sunny borders, beds or 
rockeries. Plant, Oct., March or April. Propagate by seeds sown 
4 in. deep outdoors, March or April, where plants are required to grow ; 
division of cplonts in March or April. 
SPEOIES CULTIVATED: P. alliacea, white, summer, 1 ft., E. Europe. 
Pennisetum.— Ord. Graminew. Hardy perennial grasses. 
Flowering & orn. foliage. Inflorescence very graceful and useful for 
cutting and drying for winter decoration. 
CULTURE OF P. LATIFOLIUM: Soil, sandy loam. Position, shel- 
tered, well-drained borders in warm parts of the kingdom only. Plant, 
April. Protect in severe weather with covering of mats, or lift in 
Nov., place in large pots or tubs & remove to greenhouse, replanting 
outdoors in April or May. 
CULTURE OF P. LONGISTYLUM: Soil, ordinary. Position, sunny 
borders. Sow seeds 1-16 in, deep in patches a foot or more in diameter 
in March or April, where plants are to Hower. Gather inflorescence 
for winter use, end of July. This species is best treated as an annual. 
pr oeeate P. latifolium by seed sown 1-16 in. deep in sandy soil in 
shallow boxes or pans in temp. 60° to 65°, March or April. transplanting 
seedlings outdoors in pay or June; division of root in April. 
SPECIES CULTIVATED: P. latifolium (Syn. Gymnothrix latifolia), 5 to 8 ft., 
perennial, Argentina; longistylum, 12 to 18 in., annual, Abyssinia. 
Pennyroyal (Mentha pulegium).—See Mentha. 
Pentas. — Ord. Rubiaceez. Stove evergreen flowering shruba. 
First introduced 1842. 
CULTURE: Compost, equal parts fibrous peat & leaf-mould, halt- 
part each light loam & sand. Pot, Feb. to April. Position, well-drained 
pots in light part of stove. Water moderately Sept. to April, freely 
at other times. Syringe daily April to Sept. Prune plants into shape 
immediately after flowering. Nip off points of young shoots occa- 
sionally during May, June & July to induce bushy habit of growth. 
Temp., Sept to April 50° to 60°; April to Sept. 60° to 75°. Propagate 
by cuttings of young shoots, 2 to 3in, long, inserted singly in 2-in. 
pots filled with sandy compost & placed under bell-glass in temp. of 
75°, spring or summer. 
SPECIES CULTIVATED: P. carnea, pink, winter, 18 in., Trop, Africa; carnea 
kermesina, rose and violet; carnea, quartiniana, pink. 
Pentstemon (Beard Tongue).—Ord. Scrophulariacee. Hardy 
perennials. First introduced 1794. 
CULTURE: Soil, two parts rich loam, one part decayed manure or 
leaf-mould. Plant, March or April. Position, sunny beds or borders, 
well drained. Apply stimulants once or twice a week in summer, Suit- 
able stimulants: Liquid cow or horse manure; superphosphate at the 
rate of a tablespoonful to each plant forked into surface of soil in May; 
niteate of soda 40z. to a gall. of water once a week; Peruvian guano 
4oz. to gall. of water twice a week. Propagate by seeds sown 1-16 in. 
deep in a well-drained pot or pan of light soil in temp. 55° to 65° 
in Feb. or March, transplanting seedlings outdoors in May; cuttings 
of young shoots 3 in. lon inserted in sandy soil in boxes or a bed 
under hand-light, or in cold frame in Aug., allowing them to remain 
there until April; division in ace 
