GROWTH HABIT: Bean describes the plant as, "pretty graceful" while Dirr calls it, "rather scraggly" and Krussmann says, "loose...thinly branched". I have seen plants that would fit all of these descriptions. The 3 year old plant at the
University of Delaware Botanic Gardens is dense and 2' tall and as wide.
SIZE: 3-6' tall
HARDINESS: Zone 6 - 8
CULTURE: Full sun to partial shade, although the shade may encourage
a loose habit. Plants grow best in moist, well drained soil. Wilson described
plants growing on limestone, although plants grow well in acidic soil also.