This fast-growing, prolific seed producer
easily resprouts and quickly multiplies. Tree of heaven competes
with surrounding
plants for resources, has an unpleasant odor, and produces
toxins that inhibit the growth of nearby plants. The toxins may
be poisonous to wildlife and humans. At mid-elevations
(3000-5000 ft), tree of heaven is invasive, while at lower
elevations in urban areas, it is considered a nuisance.
Western soapberrySapindus saponaria var. drummondii
An attractive deciduous tree
with furrowed brown bark that can grow to 30 ft in
height and width. The white flower clusters turn
into amber yellow fruits in the summer which birds
favor. Western soapberry reproduces by suckers and
can form a small grove of trees.
Feather tree
Lysiloma microphylla var. thornberi
A large shrub or small tree
with fern-like, delicate evergreen leaves. The
creamy white puff-ball flowers become attractive
dark-brown flat pods. With severe cold and freezing,
the feather tree remains a shrub and drops its
leaves.
Also try: Velvet ashFraxinus
velutina Arizona walnutJuglans major
Both are riparian
deciduous trees that need supplemental water.