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/Tree Indiana Native Viburnum prunifolium [Blackhaw Viburnum] Widely tolerant of different soils and exposures. Transplants well. Relatively trouble-free. Can be pruned to form a nice hedge. Scale and borers are occasional problems. The edible fruits are sweet and can be eaten fresh, or used in jams and preserves.
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.
Tree Zelkova serrata 'Halka' [Halka Japanese Zelkova] An excellent shade tree, probably one of the best substitutes for Ulmus americana in form and gracefulness, but slightly smaller. A beautiful wood grain for furniture, etc. Minor susceptibility to various elm diseases and pests, but resistant to Dutch Elm Disease. Considered to be one of the more popular cultivars of Zelkova serrata, although Green Vase and 'Green Village' tend to be better performers. 'Halka' is more open and loose and the fall color is…
