LIST“OF* PLANTS 169 
inserted with the tops just below the surface in sandy 
soil in a cold frame in autumn and winter. 
Ripes (FLOWERING CurRANTS).—Increase by cuttings 
of ripened shoots about 6 inches long firmly inserted to 
half their length in sandy soil outdoors in September, 
and by rooted suckers in autumn and winter. 
RicHARDIA.—-Propagate by division and by suckers 
and offsets taken off when repotting or planting out, 
‘also by seed sown in heat when ripe. 
Ricinus (Castor-o1L PLant).—Sow seed in heat in 
March, grow on under glass, and harden off for planting 
in a sheltered, sunny position early in June. 
Rrivina.—R,. humilis, cultivated for its racemes of 
bright scarlet berries, is readily propagated by seed 
sown in a temperature of 65 degrees in spring, and by 
cuttings at the same season. 
RONDELETIA.—Strike cuttings when the shoots have 
lost their succulent nature and become somewhat firm, 
by removing the lowest pair of leaves, cutting smoothly 
just below a joint, inserting them in pots of sandy soil, 
and plunging in bottom heat under a bell-glass in a 
temperature a little higher than that in which they have 
been growing. 
Rosemary (Rosmarinus officinalis).—The species and 
varieties of this odorous dwarf shrub can be propagated 
by cuttings, 4 inches to 6 inches in length, inserted in a 
shady border in April or May, or by rooted slips de- 
tached and planted where intended to be grown. 
Roses.—Nearly all the known methods of propaga- 
tion may be practised with the various species and 
varieties of this popular flower. The most used are 
whip-grafting in close heat in January, and budding, 
which have been explained in a previous chapter. | 
