Moist to dry open forests, forest edges, thickets, stream banks, clearings and roadsides in lowland zone (Douglas et al., 1999).
In broad-leaved forests on water-receiving sites, soils are melanized and often gleyed. Moder and Mull humus forms (Klinka et al., 1999).
Nitrogen-rich soils (Klinka et al., 1999).
pH 5.5 to 7.5 (Young 2001).
Moist to very moist, often with fluctuating water table (Klinka et al., 1999).
Shade to full sun (Klinka et al., 1999).
Pioneer seral on moist sites. Persists into late seral stages because of shade tolerance.
Moist stream sides, often associated with red-osier dogwood, blue elderberry and snowberry.