JOUENAL 



OF THE 



Royal Horticultural Society. 



Vol. XXVII. 1903. 

 Part IV. 



PESTS OF GARDEN VEGETABLES. 

 By M. C. Cooke, M.A., LL.D, A.L.S., F.R.H.S., V.M.H. 



The majority of the pests which infest garden vegetables, salads, and 

 sweet herbs, are specifically distinct from those which attack garden 

 flowers, but are equally prevalent and destructive. As, however, they 

 are closely allied, the treatment and remedies will be found to be, in 

 most cases, the same. It cannot be urged too often that, as prevention is 

 better than cure, the greatest care should be taken against the introduc- 

 tion of fresh diseases into the kitchen garden, and any encouragement to 

 the permanency of old ones. Wild plants — or " weeds," as they are 

 termed — are many of them subject to fungoid diseases, which may transfer 

 themselves to kindred cultivated plants when growing in their vicinity. 

 As a warning to careless cultivators, wild Cruciferous or Composite weeds 

 should not be permitted to invade the garden or its borders. Further- 

 more, the ' ' rubbish heap," in an out-of-the-way corner, should be dis- 

 pensed with, because the resting spores, or the winter condition of some 

 of the most troublesome pests, will be found in the stems or other dead 

 parts which are usually consigned to a rubbish heap instead of being- 

 burnt; and consequently the "rubbish heap" becomes a teeming 

 emporium for the dispersion of active spores in the spring, so that from 

 this centre a very large area may speedily be infected. 



Cabbage Leaf Spot. 

 Phyllosticta Brassiccs (Curr.), PI. VII. fig. 95. 



Cabbage leaf spotting is not a serious calamity, but it may become 

 annoying when excessive. The most common spot is that above named, 

 which occurs also on rape. The spots are generally rather large and 



B 



