286 Encyclopaedia of Gardening 



Shifting. Repotting is often spoken of as " shifting " by 

 gardeners. See Potting. 



Shield Fern. See Aspidium. 



Shirley Poppy. See Papaver. 



Shortia (short-ia, after Dr. Short. Ord. Diapensiaceae). A small 

 genus of pretty hardy perennials, growing but a few inches high, 

 and blooming in spring. They are good for shady parts of the 

 rockery, where they thrive in sandy peat. Propagation is by off- 

 sets, which may be removed from strong plants in spring. Galaci- 

 iolia has white and uniflora pale pink flowers. 



Shrubbery, Shrubs. See Flower Garden. 



Siberian Crab, Pyrus baccata. 



Sibthorpia (sibthorp-ia, after Dr. Sibthorp. Ord. Scrophulari- 

 neae). A small genus, comprising one pretty plant in europaea, 

 the Cornish Moneywort, which grows 6 to 8 ins. high, and has pink 

 flowers in summer. Still prettier is the form variegata, which is 

 best grown in a greenhouse or room, and looks well in a hanging 

 basket. Loam and leaf soil in equal parts, with sand, suit. Propa- 

 gation is by cuttings in a frame in spring or summer. 



Side-saddle Flower. See Sarracenia. 



Silene, Catchfly (sile-ne, from sialon, saliva, from the glutinous 

 secretion. Ord. Caryophylleae) . Pretty annual, biennial, or peren- 

 nial herbaceous plants, the majority hardy and good for the rockery 

 -or for beds. The most popular is the hardy annual pendula and 

 its variety compacta, which have pink flowers, and do well when 

 sown in August for spring blooming. Acaulis, pink, early summer, 

 3 ins. high, the Cushion Pink or Moss Campion, is good, and has 

 several varieties. Maritima flore pleno, double white, is a good 

 hardy trailer. Schafta, deep red, summer, 6 ins., is also a good 

 xock plant. Ordinary soil. Propagation is by seed, or by division 

 in the case of the perennials. 



Silk Vine, Periploca graeca. 



Silphium, Compass Plant (sil-phium, from silphion, a Greek name. 

 Ord. Compositae). Hardy perennials of little importance, but 

 laciniatum, which grows 5 to 6 ft. high, and has yellow flowers in 

 summer, is interesting from its supposed peculiarity of turning its 

 leaves north and south. Ordinary soil suits. Propagation is by 

 seed or division. 



Silver Fir, Abies pectinata. 



Silver Leaf. See Plum enemies under Fruit. 



Sinapis, Mustard (sina-pis, from nap (Celtic). Ord. Cruciferae). 

 See Kitchen Garden. 



Sisyrinchium, Satin Flower (sisyrin-chium, from sys, a pig, and 

 vyncos, a snout, in reference to their being uprooted by wild pigs. 

 Ord. Irideae). Pretty hardy perennials, suitable for the rockery, 

 or for culture in pots in a cool greenhouse. Grandiflorum, which 

 has purple flowers in spring, and grows about a foot high, is the 

 most important (see the Botanical Magazine, t. 3509). There is a 

 white variety. Loam, with sand and a third of leaf mould, sir'ts. 

 -Propagation is by seeds in spring or offsets. 



