Celtis reticulata,
Netleaf Hackberry or Canyon Hackberry is
irregularly distributed over a range that extends from the
Chihuahuan desert on the south to the arid plains of eastern
Washington on the north. It is typically found in dry, rocky
hillsides, canyons and dry stream beds from 2500' to 6500' above
sea level. This tree has a rustic, drooping form with twisted
branches and trunks, densely divided branches and heavily veined
leaves.
Hackberries are member of
the Elm family with bright green, lopsided, saw-toothed elm
tree-like leaves. Leaf size may vary in response to
environmental conditions with smaller leaves produced when trees
are stressed for water or fertilizer. The trees provide fall
color with turning bright yellow with the onset of persistent
cold temperatures. Tiny nondescript flowers in spring mature
into tiny red to orange berries in fall. Berries attract
wildlife and birds in desert and urban settings.
Unwanted seedlings or
volunteer plants are easily controlled with herbicides or a hoe.
It can grow as either a large shrub or a medium sized trees.
Some mature specimens can grow to 25 to 45' tall. The trees are
well adapted to desert heat and are hardy to -20 degrees F. It
grows best in well draining soils with supplemental summer
irrigation. To a limited extent Celtis can be naturalized
to desert conditions but will not survive extended droughts
without irrigation. Trees should be pruned in winter to maintain
an attractive shape and structure. The irregular, natural form
of this tree makes it ideal for naturalistic desert landscapes
or as a tree to soften the transition back to undisturbed
desert. By providing food and shelter, Canyon Hackberry
can be used to attract birds and wildlife into the landscape.
