IQ2 NEW ZEALAND GARDENING. 



little flour of sulphur dusted over the plants and on the soil 

 under the leaves during hot weather will drive off noxious 

 insects, and destroy the mildew. This remedy will also 

 answer for all kinds of plants attacked by red spider or 

 mildew. 



Rust. Rusty grapes are caused by sudden draughts of 

 cold air against the berries when they are just set. Exces- 

 sively hot pipes will produce rust sooner than anything else. 

 Handling the grapes should be avoided as much as possible. 

 Ordinary care will prevent this disease. 



Warty Leaves in vines are the result of a close, damp 

 atmosphere and insufficient ventilation ; they never appear 

 under any other conditions. The leaves become cupped 

 and crumpled. The growth of the plant is greatly retarded 

 in bad cases completely arrested. The only preventives 

 are a dry atmosphere and plenty of air. 



Shanking 1 in vines. This disease is the result of 

 bad culture and unsuitable soil, although it sometimes 

 attacks vines which have every attention. The disease 

 attacks the foot-stalk of the berries at or after the stoning 

 period, when the berries are changing colour. They lose 

 their fleshiness, have a disagreeable acid taste, and soon 

 shrivel and drop off if the bunch is shaken. There seems to 

 be no certain remedy against this troublesome disease. 



Spot in Pelargoniums is caused by the plants being 

 overcrowded and over-watered, but a remedy will be found 

 in the following mixture, if applied through a syringe : One 

 teaspoonful of Condy's disinfecting fluid to a quart of water. 

 After doing this a few times the disease invariably leaves 

 the plant. 



Canker. Fruit trees are subject to several different 

 diseases, and each of them often goes by the name of canker. 

 Practical cultivators, however, know well enough what canker 

 is. A portion of the bark becomes diseased and dies, the 

 dead portion falls off, leaving the wood exposed, which also 

 decays, and when the trees are badly attacked whole 

 branches die off. Of course wherever there is decay, insects 

 or fungoid growths appear ; and it is not unreasonable to 

 assume that insects may be the cause of canker, which some 

 have averred, but in reality they are only the result of the 



