Rudbeckia (_Cone Flower._)--Hardy annuals yielding yellow flowers in
July. They are readily grown from seed sown early in spring, and will
grow in any garden soil, but naturally succeed best in deeply-worked,
well-manured ground. They may be increased by division in October or
November, as well as in spring-time. Height, 3 ft.
Ruscus Aculeatus (_Butchers Broom_).--A hardy evergreen shrub which
thrives in any rich soil, and may be increased by division of the
root. Height, 1 ft.
Ruta Graveolens.--This hardy evergreen shrub is a species of Rue.
It enjoys a good, rich soil, in which it flowers freely in August.
Cuttings may be struck under a hand-glass. Height, 3 ft.
Ruta Patavina (_Rue of Padua_).--For rock-work this hardy perennial is
very useful. It likes a dry yet rich and light soil. At midsummer it
produces an abundance of greenish-yellow flowers. It can be raised
from seed, or cuttings may be struck under a hand-glass. Height, 6 in.
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