| | 23. Two and three needle pines also are subject to attack by the
larvae of several small tip moths. |
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24. The first symptoms of tip moth attack are the dead tips of
terminal and lateral branches. |
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25. The tiny caterpillars bore initially into the buds and then
into the twigs themselves. |
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26. Pitch, frass, and dead needles soon are evident on the
infested tips. Young trees are seriously deformed by repeated
infestations, but light infestations may actually improve some
ornamental pines by making them bushier. |
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27. Controlling tip moths requires insecticide sprays timed to
coincide with the egg-laying period of the adult moths. Timing
varies somewhat with the season and geographic area. |