December 12
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Plant Species of the genus Kalmia

Information about this genus
Name: Kalmia
Cultivation: CULTIVATION: Kalmias require conditions similar to those of rhododendrons, to which they are closely related. They are at home in slightly acid, peaty soil but resent clay and lime in any form. Adequate water is needed in hot summer weather. Dappled shade under tall deciduous trees in a cool moist climate is ideal. Little pruning is necessary apart from the removal of spent flower clusters. The simplest method of propagation is from seed, which should be collected as soon as ripe and sown the following spring. Firm tip-cuttings taken in late summer through to winter may be struck, though not easily; alternatively, simple layers can be set down in autumn and severed a year later.
Description: This genus of 7 species of mainly evergreen shrubs in the family Ericaceae was named after Dr Pehr Kalm, a botanist and explorer of the east coast of North America in the 1770s. Most are native to northeastern USA, a single species occurring in Cuba. They are grown for their attractive foliage and their showy flowers, which range in color from pale pink to deep red. The leaves are simple and alternate and the flowers are generally carried in terminal corymbs, well clear of the foliage; the fruits are small capsules that contain quantities of very small seeds.

Specie Vernacular Zone
angustifolia 2-9
latifolia 3-9
polifolia 3-9

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