Salpiglossis.--Very beautiful half-hardy annuals which are greatly
prized for cut bloom. A light but not over-rich soil suits them best.
The seed may be sown in the open border early in spring, or preferably
on a hotbed at the same period. For early flowering raise the plants
in the autumn, and winter them in a frame or greenhouse. Flowers are
produced in July and August. Height, 2 ft.
Salsafy (Vegetable Oyster).--Sow the seed in any good garden
soil--deep sandy loam is best--towards the end of April in drills 1
ft. apart, and thin the plants out to a distance of 6 in. from each
other. The roots may remain in the ground till required for use, or be
lifted in October and stored in the same way as Beet or Carrots. They
are prepared for table in the same manner as Parsnips, and are also
used for flavouring soups.
Salvia.--Very showy flowers, well worth cultivating, and easily grown
in a rich, light soil. The annuals and biennials may be sown in the
open early in spring. The herbaceous kinds are increased by dividing
the roots; the shrubby varieties by cuttings of the young wood planted
under glass in March; while the stove species require to be placed in
heat. They flower in August in the open. Heights vary, according to
the kinds, but S. Coccinea and S. Patens, which are most commonly met
with in gardens, grow to a height of 2 ft.
Sambucus (The Elder).--Useful deciduous shrubs. S. Nigra Aurea
has golden foliage, and is suitable for town gardens. The silvery
variegated variety (Variegata), is fine for contrasting with others.
They may all be propagated by cuttings or by division. Flower in June.
Sand Wort.--See "Arenaria."
Sanguinaria Canadensis (Bloodroot).--A hardy perennial, curious
both in leaf and flower. It requires a light, sandy soil, shade, and
moisture; is propagated by seed sown in July, also by division of the
tuberous roots, and it blooms in March. The tubers should be planted 5
in. deep and 3 in. apart. Height, 6 in.
Santolina.--This hardy evergreen shrub grows freely in any soil. It
flowers in July, and is increased by cuttings. Height, 2 ft.
Sanvitalia.--Interesting, hardy annual trailers, which may be readily
raised from seed sown in March or April, and merely require ordinary
treatment. They produce their golden and brown and yellow flowers in
July. Height, 1 ft.
Saponaria.--These grow best in a mixture of sandy loam and peat or
decayed vegetable soil. The annuals may be sown either in autumn,
and wintered in a frame, or in the open in April. The perennials are
increased by seed or by division of the root, and young cuttings
of the branching species root freely if planted under glass. S.
Ocymoides, on account of its trailing nature, and S. Calabrica make
fine rock-work plants. The leaves of S. Officinalis, or Soap Plant, if