Singleleaf ash grows well on a variety of soil types, ranging from
gravel to clay loams. It occurs more often on poorly-developed soils
with 0.5 to 2.0 percent organic matter content [
18]. Sites are
typically dry canyons or gulches with full exposure to sunlight and
range from 3,000 to 11,000 feet (910-3,300 m) elevation [
14].
Singleleaf ash also colonizes talus slopes, dry hillsides, and alluvial
deposits [
12,
16,
25].
Common plant associates of singleleaf ash include skunkbush sumac (Rhus
trilobata), desert ceanothus (Ceanothus greggii), Arizona rosewood
(Vequelinia californica), desert barberry (Mahonia fremontii),
chokecherry (Prunus virginianus), and mountain-mahogany (Cercocarpus
spp.) [
7,
18].