Cotoneaster. Rosaceæ.
Propagated readily by seed, which should be sown in spring; by layers or cuttings in autumn, or by grafting on C. vulgaris, the common quince, or the hawthorn.
Cotton (Gossypium). Malvaceæ.
Seeds commonly. Grown as a curiosity under glass; it may be increased by soft cuttings.
Cotyledon (Navelwort). Crassulaceæ.
Increased by seed, offsets, cuttings of the stem, and by leaves. The leaves should be pulled off in autumn, laid on dry sand in pans on a shelf in a propagating or other warm house, and not watered until small plants appear at the ends of the leaves.
Cowslip. See [Primula].
Crambe. Cruciferæ.
Increased by seeds, by dividing the roots and by root-cuttings. See[ Sea-kale].