Such is the fate of the man who would be a gardener. He must wage constant battle with flowers whose beauty he can but acknowledge. He must be full of zeal for the murder of plants he is bound to love and admire. It is a little like hitting a woman; and, when one sees the weed, which has been violently hurled from bed and border, patiently trying to live its humble life on wall or rubbish-heap, smiling as sweetly as it may on the "owner" of the soil, one is reminded of that pathetic--even if fictitious--story of the vivisector's dog.
Vigorously growing plants are far less liable than are feeble ones to the attacks of the various living enemies which the gardener is called upon to combat. Therefore the most important item in the suppression of insect or fungoid pests is careful and correct culture. But, even in the best kept gardens, green-fly and earwig, slugs, snails and wireworms will appear, and must be dealt with by repressive as well as by preventive measures.
The green-fly, which is sometimes such a trouble to our roses and fruits, should be treated with vigorous and repeated syringing or hosing with water. If this is found to be inadequate, the affected plants may be washed with tobacco water (made by pouring half a gallon of boiling water on an ounce each of soft soap and shag tobacco, and allowing the strained infusion to cool), or with an emulsion made by stirring well together half a pint of petroleum oil, two ounces of hard soap, and a quart of nearly boiling water, afterwards adding half a gallon of cold water, and thoroughly mixing. This last application should always be applied in the evening.
Wireworms, which are such a foe of the carnation grower, may usually be destroyed by spreading gas-lime at the rate of two pounds per square yard over the unoccupied soil in the fall, ploughing or digging it into the ground a month or two later. If this is impracticable, the wireworms may often be trapped by burying pieces of potato at intervals, removing them every few days.
For destroying the fungus of mildew nothing is more effective than sulphur mixed with soft soap and water in the proportion of one ounce of sulphur and four ounces of soap to four gallons of hot water.
