Shrub Viburnum opulus [European Cranberrybush Viburnum] Widely tolerant of soils and microclimates, although found in more wet sites in wild stands. May be troubled by aphids. The snowball variety, V. opulus 'Roseum', is badly troubled by aphids. Prune on a 3-year cycle to maintain best form and fruiting. Flower cymes have an outer showy and sterile ring and an inner inconspicuous and fertile cluster which produces the berries.
Shrub Viburnum plicatum f. tomentosum [Doublefile Viburnum] The Doublefire Viburnum is fertile and more commonly used in the landscape than the sterile Japanese Snowball Viburnum (Viburnum plicatum f. plicatum). The white flowers are reminiscent of a lace doily with sterile showy flowers at edge surrounding the non-showy fertile flowers. Flower clusters accentuate the horizontal branching. Fruits are red that change to black if not eaten by birds, beginning in late summer.
Shrub Viburnum × rhytidophylloides 'Willowwood' [Willowwood Lantanaphyllum Viburnum] Poor tolerance to heavy wind environments. Great plant in the Midwest, flowering in the spring and even sporadically into the fall. Foliage sometimes lasting well into the winter. Prune right after flowering, because new buds for the following year form in the summer.
