Bark color grouping

It will also be well, instead of planting them exclusively sort by sort, to group and intergroup carefully assorted colours, such as the scarlet Willow with the purple-barked kind, and to let this pass into the American Willow with the black stem. Such a group should not be too large, and it should be near the pathway, for it will show best near at hand. For the sake of the bark-colouring, it would be best to cut it all every year, although in the larger plantings it is desirable to have the trees of different ages, or the effect may be too much that of a mere crop instead of a well-arranged garden grouping.