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282 types of injurious insects are as follows: plant lice, scales, borers, fruit-eating insects, root-feeding insects, and leaf or bud-feeding insects.The leaf or bud-feeding insects are the most harmful to the appearanceof ornamental plants, though borers and scales do a vast amount ofdamage. Plant lice also, during some seasons of the year, spoil theappearance of some ornamental plants as well as do damage. Much valuable study and thought have been given to the subjectof eradication of insect pests and the information available on thissubject is very complete. The spray calendars published by theState Experiment Stations should be consulted for details of how tokeep ornamental plants clean and thrifty. |
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