20 FARM-GARDENING AND SEED-GROWING. 



bluish insect, often infests crops of growing cabbages. 

 They are not particularly destructive to these, but when 

 a mass of them collect on the heads, as they frequently 

 do, their appearance is spoiled, as they can scarcely be 

 gotten off without removing all the outer leaves, and 

 thus damaging the sale. These pests, though not very 

 destructive to the growing cabbages, are very much so to 

 the plant when producing seed. It was only a few years 

 ago that I had a crop of seed cabbages entirely destroyed 

 by them. They first appear, in small clusters, at the tip 

 of the branches about the time the blossoms are 

 coming, 'and if not immediately attended to, soon envelop 

 the leaves and stalks to their total destruction. 



They are generally the worst in dry seasons, and some- 

 times a heavy shower, before they get much start, will 

 destroy them. I do not know of any positive remedy ; 

 lime will check but not destroy them. As soon as they 

 appear on seed-cabbage, the tip on which they lodge must 

 be nipped off, and attention must be paid to them every 

 day until the stalks and pods are quite hard. 



A new enemy to the cabbage family has lately ap- 

 peared in the form of a green grub, which eats away 

 the leaves, and in some sections whole fields have been 

 destroyed. There is no positive remedy yet found 

 against them, though many have been tried, with varying 

 success. They are not yet common in this section, hence 

 I have not had occasion to experiment with them. 



Another very injurious insect is the one which produces 

 what is known as " club-root " in cabbages, cauliflower, 

 etc. Various theories have been advanced as the cause 

 of this malformation, but it is, beyond a doubt, caused 

 by a maggot which eats into the root, causing it to swell 

 in various shapes, and destroying the plant. I have no 

 doubt that the eggs are deposited in the manure, and so 

 taken to the field ; the maggot there hatches, and at once 

 commences the work of destruction. My conclusions in 



