SWEET PEAS 241 



an ironmonger's, and set it in the run with gloved hands for the 

 mole has keen scent. 



Later in the career of the plants they may be harassed by green 

 fly or the Pea Weevil. The former can be destroyed by spraying 

 with quassia water, made by soaking a handful of quassia chips in 

 a gallon of water for a few hours. The striped Pea Weevil (Sitones 

 lineatus) sometimes attacks the foliage, and lays eggs among the 

 roots, which hatch into whitish maggots a quarter of an inch 

 long. When the plants are growing vigorously under good 

 garden cultivation the weevil is not a very serious enemy, and 

 may be kept under by dusting the plants with soot occasionally 

 while moist. 



As regards fungoid enemies, the mildew Erysiphe Polygoni 

 sometimes attacks the plants, and coats them with a grey mould. 

 It is the most likely to be troublesome when the plants are grow- 

 ing on damp, undrained soil ; or when they are checked by drought. 

 Two parts of flowers of sulphur and one part of ground lime may 

 be mixed together and dusted on. If yellow blotches are seen on 

 the leaves, which presently become covered with a greyish down, 

 pick off the growths and burn them. If other blotches show, 

 spray the plants immediately with a preventive composed of half an 

 ounce each of soft soap and sulphide of potassium dissolved in a 

 gallon of water. Greenish spots with a darker rim betoken another 

 fungus Ascochyta Pisi. The preventive recommended for yellow 

 blotch may be tried. 



In dealing with varieties it may be well to do so in con- 

 nection with the Classification scheme adopted by the National 

 Sweet Pea Society, and which was first proposed by ourselves. 

 It is a classification by colour. All the varieties of Sweet Peas 

 in general cultivation are separated into fixed colour sections. If 

 we give the various sections in one column, and selections of 

 plain and waved standard varieties in two others, the reader will 

 have the system and the best examples of it under his eye. 



