ENCYCLOPEDIA OF GARDENING. 
Eryngium (Sea Holly).—Ord. Umbellifere. Hardy perennial 
herbs. Orn. foliage. Flower heads surrounded by spiny coloured 
bracts. 
CULTURE: Soil, light sandy. Position, dryish sunny borders. 
Plant, Oct., Nov., March or April. Propagate by seeds sown 1-16 in. 
deep in boxes of sandy soil in cold frame in April or May; division of 
plants in Oct. or April. 
SPECIES OULTIVATED: E. alpinum, blue and white, summer, 1 to 2 ft., 
Europe; amethystinum, purple, July and Aug., 12 to 18 in., Europe; Bourgatii, blue, 
June to Aug., 1 to 2 ft., Spain; giganteum, blue, summer, 3 to 4 ft., Armenia; 
maritimum, bluish white, July to Oct., 1 to 2 ft., Britain; oliverianum, blue, sum- 
mer, 2 to 4 ft., Orient; pandanifolium, purplish, summer, 10 to 15 ft., Monte Video; 
planum, blue, summer, 1 to 2 ft., Europe. 
Eryngo (Eryngium amethystinum).—See Eryngium. 
Erysimum (Alpine Wallflower; Hedge Mustard).—Ord. Cruci- 
fere. Hardy annuals, biennials, & perennials. First introduced 1823. 
Ht. 1 to 12 in. 
CULTURE: Soil, ordinary. Position, dryish sunny beds or rockeries. 
Plant, March or April. Propagate annual species by seeds sown where 
plants are required to grow in April; biennials, by seeds sown in sunny 
place outdoors in June, transplanting seedlings to flowering positions 
in Aug.; perennials, by seeds sown as advised for biennials, also by 
cuttings inserted in sandy soil under hand-light or cold frame in Aug. ; 
division of pleats in March or April, 
é An Nvad ECIES: E. perofskianum, reddish orange, spring to autumn, 1 ft., 
“8ucasus. 
i wee ae SPECIES: E. asperum arkansanum, yellow and white, July, 8 in., 
. America, 
PERENNIAL SPECIES: B. ochroleucum, sulphur-yellow, fragrant, April to July, 
Europe ;- rupestre (Syn. E. pulchellum), sulphur-yellow, fragrant, spring, 1 ft., 
Asia Minor. 
Erythrzea (Blush-wort; Centaury)._Ord. Gentianacew. Hardy 
annual or perennial alpine plants. 
CULTURE: Soil, sandy loam. Position, sunny rockeries. Plant, 
March or April. Propagate by seeds sown 1-16 in. deep in light soil in 
cold frame in April; division of plants in March or April. 
ANNUAL SPECIES: E. centaurium, pink, June to Sept., 6 to 15 in., Britain; 
Muhlenbergi, pink and white, summer, 6 to 8 in., California. 
PERENNIAL SPECIES: Massoni, rose, summer, 4 to 6 in., Azores. 
Erythrina (Coral-tree)—Ord. Leguminose. Half-hardy herba- 
ceous perennials & greenhouse deciduous shrubs. Flowering & orn. 
foliage. First introduced 1690. 
CULTURE OF SHRUBBY SPECIES: Compost, equal parts loam, 
peat, well-decayed manure & sand. Position, pot in warm greenhouse, 
or at base of south wall S. of England. Pot or plant, March. Prune 
shoots away close to old wood in Oct. Water freely April to Sept. ; 
keep almost dry remainder of time. Temp., Sept. to March 45° to 50°; 
March to Sept. 55° to 65°. Store plants in pots on their sides in green- 
house during winter.. Place in light part of structure March to June, 
then stand in sunny position outdoors. Protect outdoor plants with 
covering of ashes. 
CULTURE OF HERBACEOUS SPECIES: Compost, same as above. 
Position, pot in warm sunny greenhouse. Pot, March. Cut down 
flowering stems in autumn. Water freely April to Sept.; keep nearly 
dry afterwards. Temp., Sept. to March 45° to 55°; March to Sept. 
60° to 70°. Propagate by cuttings of young shoots removed in sprin 
with portion of old wood attached & inserted singly in well-draine 
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