. The amateur's practical garden-book;. Gardening. IMPATIENS—INSECTS 135 greenhouse or a room. It is readily propagated from seed or cuttings, seed being preferable. Flowers bright pink - red. Of easy culture in a fairly moist atmosphere. Height about 18 inches. Insects. For horticultural purposes, Insects might be grouped into three general classes: borers, or those which live inside the plant tissue ; chew- ing Insects which live on the outside of the plant; and the sucking Insects. As a general statement, it may be said that the digging out of borers is the only complete remedy. Sometimes a
. The amateur's practical garden-book;. Gardening. IMPATIENS—INSECTS 135 greenhouse or a room. It is readily propagated from seed or cuttings, seed being preferable. Flowers bright pink - red. Of easy culture in a fairly moist atmosphere. Height about 18 inches. Insects. For horticultural purposes, Insects might be grouped into three general classes: borers, or those which live inside the plant tissue ; chew- ing Insects which live on the outside of the plant; and the sucking Insects. As a general statement, it may be said that the digging out of borers is the only complete remedy. Sometimes an application of something to the body of the tree may keep them out, but it is al- Moth of one of the borers ways uncertain ; and it usually involves more work than to dig them out. All trees which are subject to borers (espe- cially apples, peaches and pears) should be examined at least twice every year. See Borers. The general run of chewing or biting Insects may be killed by the arsenical poisons. Such Insects are the com- mon types of worms and beetles which feed on foliage. The leading poison which is now used for this purpose is Paris green (which see). Hellebore and pyrethrum are useful when it is not advisable to use arsenical poisons. The sucking Insects include all the kinds of plant lice, the squash bug and all the scale Insects. These are dispatched by some material which kills by external appli- cation, especially material which has kero- sene or petroleum in it. The common ma- A beetle borer tcrial heretofore used for this purpose is kerosene and soap emulsion; but it is now believed that the emulsion of kerosene and water is fully as efficient, and since machines have been perfected for automatically mixing it, it is a much more practicable remedy. See Kerosetie Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectl
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectgardening, bookyear19
