The tree or shrub cranberry (Viburnum opulus) is native to the Northern and Western States, and it thrives under nearly all conditions. It is an interesting large shrub for background positions. Its cymes have sterile and fertile flowers, followed by scarlet fruit that hangs on late in autumn and is often used for jelly and marmalade.

The common snowball with sterile flowers is an old-time shrub in all parts of the Northern States. During recent years its foliage has been so weakened by the green aphis that it is less prized for ornamental planting. But careful spraying (159. Leaf Aphis of Apple, Plum, Cherry, and Peach) with kerosene emulsion, turning the nozzle upward, will give thrifty bushes, as we enjoyed in the West thirty years ago without treatment.

The Chinese species (Viburnum plicatum) is now planted almost exclusively at the East and South, but in the prairie States it has not proven able to endure our test winters. Where it thrives it is superior in beauty of its sterile flowers and in its plaited or plicated bright-green leaves to the common species.