HARDY PLANTS. 
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Hleracium (Hawkweed). — Hardy perennials, belonging 
to the Daisy order (Compositae). H. aurantiacum, orange, 12 
to i8in. ; and H. villosum, with downy leaves and golden- 
yellow flowers, height 6in., are the only two kinds worth 
growing. Even these are suitable for sunny banks, dry 
borders, or rockeries. They are not particular as to soil. 
Plant in autumn and increase by division of the plant in 
spring. 
Hippocv'epis (Horse-shoe Vetch). — H. comosa is a 
British and European herb, with trailing stems, pinnate leaves 
and yellow flowers borne in umbels in early summer. It 
belongs to the Pea order (Leguminosae). A pretty dwarf and 
rapid-growing plant to grow on a sunny rockery or on the 
margin of a border. Will succeed in ordinary soil, and may 
be planted in spring or autumn. Increased by seeds sown 
outdoors in April, or division of the roots in autumn. 
Houstonia (Bluets). — Dwarf evergreen perennials, not 
exceeding 3m. high, natives of America, and belonging to the 
Woodruff order (Rubiaceas). They are charming little plants 
for a shady rockery. H. coerulea bears pretty blue flowers 
freely from spring to autumn ; and H. coerulea alba has white 
flowers. Grow in moist sandy loam or peat in partial shade. 
Plant in spring. Increased by division of the roots in October. 
Hunnemannia. — A very graceful and pretty hardy 
perennial is H. fumariaefolia, a native of California, and a 
member of the Poppy order (Papaveraceae). The plant grows 
about 2ft. high, and has finely cut foliage and yellow, cup- 
shaped flowers borne in late summer. Although a perennial, 
it is best treated as a half hardy annual, sowing the seeds in 
heat in March, hardening the seedlings off in May, and 
planting them out in a warm border in June. 
Hutchinsia. — H. alpina is a dwarf perennial, growing 
2in. high, and bearing small white flowers in spring. A 
pretty little carpeting plant for dry rockeries or the margins 
of borders. A native of Central Europe, and a member of the 
Wallflower order (Cruciferae). It does best in sandy soil and 
should be planted in spring. Increased by seeds sown where 
required to grow in April ; also by division of the roots in 
autumn or spring. 
Iberis (Candytuft). — Hardy annuals and perennials, 
belonging to the Wallflower order (Cruciferae). The perennial 
species are evergreen and more or less shrubby in habit. The 
best of the latter are: I. correaefolia (a hybrid), white, 1 ft. ; 
I. c. Little Gem, white, dwarf and compact ; I. c. Perfection, 
white, gin. ; I. gibraltarica, white, sometimes tinged with red, 
