Trees, fruits, and flowers of Minnesota . The willow beetle once and one-half enlarged. tractive to those desiring windbreaks for this reason. This beetleattacks, as is evident from the above, this tree as well as willow,balm of gilead, poplar, alder and sometimes, it is claimed, the Massachusetts by destroying large numbers of balm of gileads andwillows it seriously threatened the business of the nurserymen about1898 or 1899. and a little later it was found in Ohio; now we haveit in North Dakota and, probably, in Work of willow beetle on Carolina poplar. This beetle is da
Trees, fruits, and flowers of Minnesota . The willow beetle once and one-half enlarged. tractive to those desiring windbreaks for this reason. This beetleattacks, as is evident from the above, this tree as well as willow,balm of gilead, poplar, alder and sometimes, it is claimed, the Massachusetts by destroying large numbers of balm of gileads andwillows it seriously threatened the business of the nurserymen about1898 or 1899. and a little later it was found in Ohio; now we haveit in North Dakota and, probably, in Work of willow beetle on Carolina poplar. This beetle is dark brown, about half an inch long, with a longsnout, belonging to the so-called snout beetles, or weevils, has a con-spicuous white patch on the rear part of its back, and some whitishones on its sides near its head. It makes a hole in the poplar stemor trunk, lays an egg therein, and the larva hatching bores under theback and later into the solid wood. Young nursery trees are easilykilled by this pest. When only a branch or a stem is affected itcan be cut off in June with the contained worm and burned with 4l6 MINNESOTA STATE HORTICULTURAL SOCIETY. the culprit inside. A good preventive to young stock in the nur-sery and elsewhere would be a whitewash on the trunks, containinga liberal allowance of paris green, applied two or three times dur-ing May and early June. Jarring the trees in May and June, inthe morning, causing the beetles to drop upon a sheet below, is alsosuggested. The entomologist considers the situation so seri
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