176 | PLANT PROPAGATION 
curiosity) will also grow and produce young plants. 
The compost in which they thrive best consists of 
fibrous and chopped sphagnum intermixed with small 
pieces of crushed brick and charcoal. 
SORREL (Rumex acetosa).—This is a native plant and 
the only species of the genus usually grown in English 
gardens (for the leaves, used in salads). It may be 
raised by sowing seed in March or by division of the 
clumps in early spring. 
SPARMANNIA.—Both the single and the double flowered 
forms of this favourite greenhouse shrub are easily 
increased by cuttings in close heat in spring. 
SpinAcu.——The Round or Summer Spinach should be 
sown at intervals from February to May, according to 
the demand. For winter and spring use, one sowing of 
Long-Standing Prickly should be made early in August 
and another in the middle of September. If the summer 
crops are sown in single drills between rows of Peas, 
some shade is obtained, and they are not likely to run 
to seed so quickly. Spinach Beet may be grown like 
ordinary Spinach, 
Spir#A.—Propagate the herbaceous kinds by division 
in autumn or spring; the shrubby sorts by green cut- 
tings of young shoots in summer, kept close and shaded 
until rooted; also by root offsets (of the species which 
produce them) in autumn, 
STaTICE (SEA LAVENDER).—Annuals, biennials, and 
perennials can all be raised from seed, provided that 
such is obtainable. Most sorts germinate better in 
gentle heat. S. Bonduelli and S. sinuata varieties do 
well treated as half-hardy annuals, large quantities being 
thus grown for market and called everlasting flowers, 
on account of their durability when dried. S. Suworowt, 
