Red Spiders

Evergreens may be rid of red spider by spraying with a weak solution of glue. Dissolve 1/2 pound of  common glue in a quart of hot water then dilute to  about 10 gallons. Spray it, especially on the under  sides of the leaves, where the mites are mostly found.  The glue will dry and flake off carrying with it the  suffocated spiders and their webs. Of course, some  will escape and a new infestation will occur but a  repetition of the spray in 10 to 15 days will prove  effective. This pest is not troublesome in moist  weather; only when the air is dry as in summer. 

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See Also: Garden Pests