Propagated by seeds sown in May, and by cuttings planted in summer. =Agalmyla.= _Gesneraceæ._ Propagated by half-ripened cuttings, in heat under glass. =Aganisia.= _Orchideæ._ Propagated by dividing the pseudo-bulbs just before starting into new growth. (See under Orchids.) =Aganosma.= _Apocynaceæ._ Propagated by cuttings in sand, under glass, with bottom heat. =Agapanthus= (African Lily). _Liliaceæ._ Propagated by offsets, or by divisions of the old plants in early spring. =Agapetes.= _Vacciniaceæ._ Increased by young hardened cuttings, in sandy soil, under a hand-glass, in high temperature. =Agaricus.= See Mushroom. =Agastachys.= _Proteaceæ._ Propagated by cuttings of ripened wood, in sandy soil under a glass, in a cool house. =Agathæa.= _Compositæ._ Seeds and layers. Young cuttings root freely, in a gentle heat, at all times. =Agathomeris.= See Humea. =Agathosma= (Bucco, Dichosma). _Rutaceæ._ Increased by cuttings, which, when young, root freely in a pot of sand, under a bell-glass, in a cool house. They require to be shaded somewhat in the summer. =Agathotes.= See Swertia. =Agati.= _Leguminosæ._ Increased by cuttings, which will root in a pot of sand with a hand-glass over them, placed in heat. =Agave.= _Amaryllideæ._ Increased by seeds, to secure the production of which the flowers should be pollinated. Usually by suckers which spring naturally from the old plant. =Ageratum=, Cælestina. _Compositæ._ Sow the seeds in January, in heat, in sandy soil. When large enough, prick them off into thumb pots, and keep in heat till they grow freely, then place them in a cooler house. Cuttings are commonly used for propagation. =Aglaia.= _Meliaceæ._ Propagated by cuttings ripened at the base, and taken off at a joint. They will root in sand under a hand-glass in heat. =Agrimonia.= _Rosaceæ._ Propagated by root-division. =Agrostemma= (Rose Campion). _Caryophylleæ._ Propagated by seeds and by division. =Agrostis= (Bent Grass). _Gramineæ._ Increased easily by seeds, sown in spring in the open border. =Ailanthus= (Tree of Heaven). _Xanthoxylaceæ._ Propagated by suckers; and by pieces of the roots and planted in a pot with their points above the ground, and placed in a hot-bed. Also by stem-cuttings. Seeds are used when large quantities are desired. =Ainslæa.= _Compositæ._ Propagated by divisions of the root. =Aitonia.= _Meliaceæ._ Increased by cuttings, which must not be put in very close together; they will root in sand, under a bell-glass, with bottom heat. =Aizoon.= _Portulacaceæ._ Propagated by seeds and cuttings. =Ajax.= See Narcissus. =Ajuga= (Bugle). _Labiatæ._ Perennials propagated by seeds sown in the open border, during spring or autumn; by divisions. Annuals by seeds.