=Kale= (_Brassica oleracea_, vars.). _Cruciferæ._ By seeds, sown in the open in spring in the north, or in the fall in the south. =Kalmia= (Mountain Laurel, Calico-bush). _Ericaceæ._ May be increased by seeds, which should be sown in shallow pans of sandy peat, and kept in a cold-frame until the seedlings are large enough to transfer to the open air after being hardened off. By cuttings of young shoots in sandy peat, placed in a shady situation under a hand-glass. Also by layers. Usually obtained from the woods. =Kennedya.= _Leguminosæ._ Seeds may be sown in spring or summer, or cuttings of rather firm side shoots may be made at the same time, and placed in peaty soil, in a close, warm frame. =Kentia.= _Palmæ._ Increased by seeds, placed in light, sandy soil, with heat. =Kentucky Coffee-tree.= See Gymnocladus. =Kerria.= _Rosaceæ._ Propagated by divisions, layers, and by cuttings of young shoots, inserted under a hand-light, or by ripened cuttings. In this country, oftener increased by ripe wood in fall. =Kitaibelia.= _Malvaceæ._ Seeds. May be readily propagated by divisions. =Kleinhovia.= _Sterculiaceæ._ Seeds. Make cuttings of the young ripened shoots, and place in sand, in heat, under glass. =Klugia.= _Gesneraceæ._ Seeds. Propagated usually by cuttings. =Knightia=, Rymandra. _Proteaceæ._ Make cuttings of ripened shoots with upper leaves on, and place in sandy soil under glass, in a very gentle bottom heat. =Kniphofia=, Tritoma. _Liliaceæ._ Increased by seeds, or by divisions of the crown in early spring. =Knowltonia=, Anamenia. _Ranunculaceæ._ Increased by seeds and divisions. =Kœllikeria.= _Gesneraceæ._ Seeds, carefully sown. May be propagated by dividing the tubers. =Kœlreuteria.= _Sapindaceæ._ Propagated in spring by seed, by layers in autumn, and by cuttings of the young shoots in spring; also by root-cuttings. =Kœniga.= _Cruciferæ._ Seeds, in spring. =Krameria.= _Polygaleæ._ Cuttings, set in sand under glass, in spring. =Kreysigia=, Tripladenia. _Liliaceæ._ Seeds. Propagated generally by divisions in spring. =Kydia.= _Malvaceæ._ Seeds. May be increased by cuttings of firm shoots, which root in sand under glass. =Laburnum.= _Leguminosæ._ The species may be increased by seeds. Layers and suckers are often used. The varieties by grafting or budding on the common sorts. =Lachenalia.= _Liliaceæ._ Seeds. Bulbels. =Lachnæa.= _Thymelæaceæ._ Cuttings of short young shoots may be made in spring, and should be placed in sand, under glass. =Lælia.= _Orchideæ._ Increased by pseudo-bulbs, as in cattleya. See also under Orchids. =Lagerstrœmia= (Crape Myrtle). _Lythrarieæ._ Layers. Cuttings of firm, small side shoots may be made in spring, and placed in bottom heat.