Seeds, sown where the plants are to remain; or the winter savory (_S. montana_), which is a perennial, by division. =Saxifraga= (Saxifrage, Rockfoil). _Saxifrageæ._ Seeds, divisions, and in some species (as _S. sarmentosa_, the "strawberry geranium") by runners. =Scabiosa= (Pin-cushion Flower). _Dipsaceæ._ Seeds, usually sown in the open, and sometimes by division =Scævola.= _Goodenovieæ._ Seeds. Cuttings should be inserted in a compost of peat and sand, under glass. =Scheeria.= See Achimenes. =Schelhammera=, Parduyna. _Liliaceæ._ Increased usually by divisions. =Schinus.= _Anacardiaceæ._ Propagated by seeds. =Schismatoglottis.= _Aroideæ._ Increased by divisions. =Schizandra=, including Maximowiczia. _Magnoliaceæ._ Seeds, when procurable. Propagation is effected by layers; by ripened cuttings, which should be inserted in sand under glass. =Schizanthus= (Butterfly or Fringe Flower). _Solanaceæ._ The half-hardy kinds are increased by seeds sown in a little heat in spring. The seed of the hardy sorts may be sown in the open ground in early spring. =Schizophragma.= _Saxifrageæ._ Propagated easily by cuttings of the ripened wood in a cool house in autumn. =Schizostylis.= _Irideæ._ Propagated by seeds and by division. =Sciadophyllum=, Actinophyllum. _Araliaceæ._ Seeds. Cuttings, in sand under glass, in moderate heat. =Sciadopitys= (Umbrella Pine). _Coniferæ._ Slowly propagated by imported seeds. But cuttings of the half-ripened shoots, taken off in summer and inserted in sand, in heat, root readily. =Scilla= (Squill, Wild Hyacinth). _Liliaceæ._ Slowly increased by seeds, usually by bulbels =Scolopendrium.= See Ferns. =Scorzonera= (Black Salsify). _Compositæ._ Seeds, sown where the plants are to stand. =Scotch Broom.= See Cytisus. =Screw Pine.= See Pandanus. =Scutellaria= (Skull-cap, Helmet Flower). _Labiatæ._ Seeds, divisions and cuttings of growing shoots under cover. =Seaforthia.= See Ptychosperma. =Sea-kale= (_Crambe maritima_). _Cruciferæ._ Seeds, sown without being shelled, usually in a seed-bed. When the young plants have made three or four leaves, they should be removed to permanent quarters. Seedlings should furnish crops in three years. By root-cuttings, four or five inches long, taken from well established plants. These should give plants strong enough for cutting in two years. =Seaside Grape.= See Coccoloba. =Sechium= (Choko). _Cucurbitaceæ._ Seeds. Tubers. =Sedge.= See Carex. =Sedum=, including Rhodiola (Orpine, Stonecrop). _Crassulaceæ._ Propagation may be effected by seeds, by divisions of the tufts, by cuttings of stems or leaves in spring. =Selaginella.= _Lycopodiaceæ._ Spores. Short cuttings, inserted in very early spring, in pots or pans.