IO58 THE BOOK OF GARDENING. 



drawn. In the autumn the roots should be carefully lifted and 

 stored away as advised for Beet. 



By far the most destructive of Carrot pests is the Carrot Fly 

 (Psila rosa), whose larvse penetrate the roots, causing them to 

 decay, and rendering them unfit for market by reason of their rust- 

 spotted appearance. The eggs are laid in early summer beneath 

 the soil, and the resulting larvse are yellowish-white footless grubs 

 about £in. long. They tunnel the Carrots in an upward direc- 

 tion, and make in the process several exit-holes. Carrots whose 

 foliage turns yellowish-brown and withers should be lifted, and if 

 the grubs are noted all such sickly roots should be removed and 

 burned. Kerosene emulsion might be sprayed upon the plants in 



Fig. 680. — Carrot-Fly: i, Perfect ' Insect ; 2, Grub; 3, Pupa; 

 all shown nat. size as well as much magnified ; and '4, 

 "Rusty" Carrot. 



(By permission 0/ the Board of Agriculture.) 



May with a view to prevent egg-laying. Parsnips are also 

 attacked. There are several broods. Soot and lime top-dressings 

 are also beneficial. Fig. 680 shows the perfect insect, grub, 

 and pupa, natural size and magnified, together with a Carrot 

 exhibiting the characteristic rusty spots. 



Cauliflowers. 



In most large gardens Early London or Dwarf Erfurt is 

 sown in cold frames about the middle of August for the 

 production of early Cauliflowers the following year. Another 

 excellent variety for autumn sowing is Autumn Giant. No 

 coddling should be given to the plants ; they should be kept 



