Answer: According to Rutger's Cooperative Extension, the best choice for your region include:
DEUTZIA GRACILIS (Slender Deutzia); Growth Rate: Slow to moderate Sun to light shade; well-drained soil Height: 2 to 4 feet Width: 3 to 4 feet; Low, compact, dense mound; Flower/Fruit: 3 to 5" flattened flower cluster in late spring; showy large clusters of red berries in fall.
ENKIANTHUS CAMPANULATUS (Redvein Enkianthus); Evergreen, slow growing; best in sun to partial shade in acidic, well-drained soil; suffers in dry weather; does well in clay; Narrow upright shrub; layered branches; tufted foliage; Cluster of creamy white, small, bell-shaped flowers in spring; has red or pink veins; borne on previous year's growth.
FORSYTHIA OUATA ROBUSTA (Early Forsythia, Korean Forsythia); Sun to partial shade; prefers loose soil but will tolerate adverse conditions; 4 to 6 feet tall and wide; stiff spreading shrub; Bright yellow flowers in late winter to early spring.
Hope one of these is just right for your garden.
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