Page 6 - Edible Trees For Tucson

Watering. Keep newly planted trees well watered
until the roots grow into adjacent soil. Water needs
are highest in April
through June and
decrease during July to
Introduction
September monsoons.
Water mature trees at,
and slightly beyond, the
tree’s drip line. Check
watering depth by
pushing a metal rod or A large water harvesting
stick into the soil—the basin sized to supply water at
rod will stop at dry soil. the drip line of a mature tree.
Periodic deep watering, The young tree can be planted
at least 6 inches down with a smaller internal water
into the soil, encourages harvesting basin to supply
deep root growth and it as it grows toward this
more resilient trees. mature size. Plant the tree on
a small mound.
Feeding. Native trees
are good at using nutrients from poor soils and may not
need additional inputs. Fruit and nut trees have good root
systems to extract water and minerals, but soil nutrients
can be used up producing large fruit yields. Periodically
fertilize fruit and nut trees with compost and fresh mulch
to encourage new growth and higher yields.

Pruning. While native trees do not need extensive
pruning, proper shaping—especially of thorny trees—is
important in public spaces. Pruning young fruit and nut
trees can promote sturdy branches, distribute sunlight,
create more airspace, control size and make trees easier
to harvest. Prune within the first few years of growth to
promote correct tree structure and early fruiting.
Extreme conditions. Tucson experiences
extreme heat, drought, cold and storms. Plant cold-
sensitive trees in warm microclimates away from cold air
pockets. If freezing is forecasted, wrap sensitive trees in
sheets, blankets, cardboard or fiberglass. Most fruit and
nut trees prefer full sun, but intense sunlight can burn
exposed bark, leaves and fruits. Plant sensitive trees on the

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