Trees

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Aleppo

halepensis

Pyramidal in youth, rounded with maturity evergreen with green needle-like foliage growing to 40′ to 50′ tall and 20′ to 30′ wide. Zone 9-10

Native to the Mediterranean.

Full sun. Prefers regular watering but can tolerate drought once established

Inconspicuous flowers followed by seed bearing cones.

 

Resource Links

http://ag.arizona.edu/pima/gardening/aridplants/Pinus_halepensis.html

Amur Maple

ginnala

Acer ginnala is a deciduous spreading shrub or small tree growing to 3  – –10 m tall, with a short trunk up to 20 – –40 cm diameter and slender branches. The bark is thin, dull gray-brown, and smooth at first but becoming shallowly fissured on old plants. The leaves are opposite and simple, 4– – 10 cm long and 3 – 6 wide, deeply palmately lobed with three or five lobes, of which two small basal lobes (sometimes absent) and three larger apical lobes; the lobes are coarsely and irregularly toothed, and the upper leaf surface glossy. The leaves turn brilliant orange to red in autumn, and are on slender, often pink-tinged, petioles 3 – –5 cm long. The flowers are yellow-green, 5 – –8 mm diameter, produced in spreading panicles in spring as the leaves open. The fruit is a paired reddish samara, about 1cm long with a 1.5– cm wing, maturing in late summer to early autumn.

Native to northeastern Asia from easternmost Mongolia east to Korea and Japan, and north to southeastern Siberia in the Amur River valley. It is a small Maple with deciduous leaves that is sometimes grown as a garden subject or boulevard tree.

Acer ginnala is grown as an ornamental plant in northern regions of Europe and North America, where it is the most cold-tolerant maple, hardy to zone It is naturalised in parts of North America. In the UK it has gained the Royal Horticultural Society’s Award of Garden Merit. It is also valued in Japan and elsewhere as a species suitable for bonsai. It is a nonnative invasive species in parts of northern America.

The green leaves are 1 1/2 – 4 inches long. They feature three lobes with the side lobes being shorter than the middle lobe. Fall colors will be green, red or orange depending on the variety.

In April and May, panicles of small fragrant white flowers are produced.

As with all maples, the Amur maple produces winged samaras in pairs. Some varieties have green samaras and some are red.

 

Resource Links

http://plants.usda.gov/java/profile?symbol=ACGI http://en.wikipedia.org/wiki/Acer_ginnala http://treesandshrubs.about.com/od/commontrees/p/Growing-Amur-Maple-Acer-ginnala.htm

Arizona Mesquite

velutina

Can grow to 20 – 30– ft (6 – 9 m) tall or more. It grows larger in areas with ample water, smaller in open, dry grasslands. The youngest branches may be green and photosynthetic. Young bark is reddish-brown and smooth. As it matures, it becomes a dark, dusty gray or brown and takes on a shredded texture. Yellow thorns up to one inch long appear on the young branches. The leaves are about 3-6 in (7.5 – –15 cm) long, fine, and bipinnately compound. They fold closed at night.

Prosopis velutina, commonly known as velvet mesquite, is a small to medium sized perennial tree. It is a legume adapted to a dry, desert climate. Though considered to be a noxious weed in states outside its natural range, it plays a vital role in the ecology of the Sonoran Desert.

This mesquite is found below 1700 m in desert
washes and plains in Yavapai County, Arizona east
and south to western Texas and northern Mexico. It
is common in Sonora at least as far south as Guaymas
and uncommon in California, being found in the San
Joaquin Valley, and the central and south coasts.

 

Resource Links

http://plants.usda.gov/plantguide/pdf/cs_prve.pdf http://en.wikipedia.org/wiki/Prosopis_velutina http://cals.arizona.edu/research/azalfalf/images/small_fertile_mesquite.jpg

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