. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture. 146 MASS. EXPERIMENT STATION BULLETIN 170. of the shrubs and vines which decorate roadsides are now used extensively by landscape gardeners in planting, and various species are very highly prized. The native shrubbery consists of the various elderberries, Viburnums, honeysuckles, cornels or dogwoods, hawthorns, hollies, sumaclxs, azaleas, laurels, blueberries, etc. There are also such species as the chokecherries, witch- hazel, sassafras, alders, etc. The most characteristic New England country roadside trees are the ches
. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture. 146 MASS. EXPERIMENT STATION BULLETIN 170. of the shrubs and vines which decorate roadsides are now used extensively by landscape gardeners in planting, and various species are very highly prized. The native shrubbery consists of the various elderberries, Viburnums, honeysuckles, cornels or dogwoods, hawthorns, hollies, sumaclxs, azaleas, laurels, blueberries, etc. There are also such species as the chokecherries, witch- hazel, sassafras, alders, etc. The most characteristic New England country roadside trees are the chestnut, various oaks and maples, hickories, ashes, pines, hemlock, elm, cher- ries, hornbeam, tupelo, birches and poplars. They are found growing in all sorts of combinations, mingled with different tj'pes of slirubbery, vines and herbaceous plants, with resulting effects quite unlike those obtained by artificial planting. Aside from the removal of briers and other growths too close to the roadbed, or the cutting out of the natural vegetation near abrupt curves where its presence constitutes an element of danger to traffic, or in cases where some legitimate scheme involving permanent improvement is concerned, roadside slirubbery should not be destroyed. There are, of course, occasions when the cutting of roadside shrubbery is desirable to improve the new growth which soon follows, but this should be done with discretion and Fig. 17'.— Country roadside, showing growth of native species. sjiontaneous Root Characteristics. There are well-defined differences in the development of the root systems of shade trees. All seedlings develop what are termed primary and secondary root systems; the former are kno^m as taproots and the latter as laterals. In certain species like the red cedar the taproot develops quite extensively. In young trees its function is relatively more im- portant than in older ones; hence it is usually easier to transplant large pasture cedars than small ones
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