Successful control of insects is of prime importance in mose localities, owing to the 
direct damage they do to the plants and the indirect damage caused by the insects 
carrying diseases from one plant to another. The first principles of effective control 
are proper insecticides and thorough applications at frequent intervals. Below are 
listed a few of the common pests and control. 
THRIP cause malformed, dark spotted and blistered appearance of foliage. 
In severe infestations on young plants, stunting may result. Contact in- 
secticides such as Black Leaf 40, Pyrethum and rotonone compounds are 
generally recommended. We have discontinued these in favor of Tartar 
Emitic and brown sugar (I oz. tartar emitic, 2 0z. brown sugar to 3 gal. of 
water). Spray every week after June Ist until Sept. Ist, covering all 
plant surfaces, preferably with high pressure. Dusting for thrip is no 
longer recommended for control. 
LEAF HOPPER cause edges of lower leaves on the plant to turn yellow and 
die. Most severe in hot weather. Recent trials indicate best control with 
applications of Bordeaux Mixture, once every two weeks. Cover upper and 
lower leaf surfaces. Contact sprays effective when applied every few 
days, but we have found Bordeaux Mixture far more efficient. Dusting 
may be used in place of spray but is less effective.. Spray June 1|5th 
until fall. 
RED SPIDER cause leaves to turn brown and wither. Insect is almost in- 
visible to naked eye. Control by spraying or dusting with sulphur 
compounds, 
APHIDS cause a lessening of vitality. Easily detected as they usually con- 
gregate in clusters. Spray or dust with contact insecticide whenever 
they appear. 
CUT WORM cut off the young plants close to the ground. Poison bran 
mash scattered over the garden is most effective control. 
TARNISH PLANT BEETLE cause shortening of the nodes between leaves and 
excessive branching. Cause buds to open one-sided and shorten flower 
stems. May also entirely prevent blooming. Control by striking insects 
with pyrethrum spray. Control is difficult as they move away rapidly at 
any disturbance. Bordeaux Mixture has been found to be a fairly good 
repellant and we prefer it to pyrethrum. 
LEAF EATING INSECTS including worms and caterpillars can usually be 
controled easily with a good stomach poison, spray, or dust. 
Considerable success in keeping down the. ravages of pest has been obtained by 
some growers by frequent over-head watering during the hottest part of the day. The 
water is turned on for a couple of hours every two or three days. This method is more 
practical on light, well drained soils than on the heavier soils which may become 
saturated to the detriment of the plant. 
DISEASES rob the plants of vitality, and in the case of some diseases, eventually 
destroy the plants. Control methods require destruction of all infected plants as the 
symptoms become apparent. Control of insects prevent spread. 
MILDEW common in the fall is well-known. Control by dusting the under side of 
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