CHOICE PLANTS FOR ROCK GARDENS 183 
family of plants. Some of these are troublesome weeds 
that are the bane of every gardener, but there are a num- 
ber of neatly-growing dwarf species with silvery downy 
foliage that are exceedingly beautiful and desirable rock 
plants, and like most silvery-leaved plants they thrive 
particularly well in gardens by the seashore. Generally 
speaking the Senecios are very easy to grow, the one 
point concerning the best of the miniature kinds with 
thick white tomentum being that they resent the damp 
polluted atmosphere of winter in town gardens, where 
smoke and fog sheds a sooty grease deposit which clings 
to their silky hairs. A tilted glass shade such as that 
shown in our illustration at page 119 will suffice to pro- 
tect these little gems from disfigurement and injury to 
their health, and the striking effect of their beautifully- 
cut glistening white foliage, as well as their golden yellow 
or orange-coloured blossoms. Most kinds can be propa- 
gated from cuttings stripped off with “ heels ’’ and inserted 
in sandy soil, while the smallest may be mulched to the 
foliage with sandy, gritty compost in autumn, which will 
encourage the emission of young roots from the stems 
so that in spring the plant may be carefully lifted, 
divided and re-planted. A few of the best Senecios for 
Alpine beds or rockeries are S. carniolicus, S. incanus, 
S. tyrolensis, a green-leaved species with flaming orange 
flowers, and S. uniflorus, one of the dwarfest and best 
of the silvery-leaved plants, but with unattractive 
blossoms that are best removed, the foliage benefiting 
thereby. 
SHORTIA.—Where Schizocodon soldanelloides will thrive 
