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Plum

Plums are stone fruit, which means the fruit forms around a large seed, or stone. They are ideal fruit trees for Pueblo, requiring full sun and well-drained, fertile soil. Varieties of plum that will grow in a Pueblo garden include Stanley, Blue Damson and Sapalta, according to Colorado State University. Some varieties of plum tree, such as Stanley, are self-fertile, while others need another cultivar planted nearby. As ripe plums can be several colors--red, purple and even yellow--the best way to determine ripeness, according to Ohio State University, is to gently press on the fruit of the plum while it's still on the tree. If the flesh gives slightly, the plum is ripe.

Apple
Apple trees are long-lived and produce fruit in the early fall. These trees require full sun and well-drained soil rich in organic matter. Fire blight is a problem with apples in Colorado, but Cox Orange, Golden Delicious and McIntosh are varieties that will grow well in the region because they are resistant to this bacterial disease. Apple trees usually require a pollinator, or another variety of apple tree, planted nearby. According to Colorado State University, mites and aphids can attack your apple tree and cause damage to fruit and foliage, but spraying a dormant oil on your tree in late winter will eliminate that threat. Apple trees are available as full-sized--about 20 feet tall--dwarf or columnar cultivars. You can grow the smaller trees in containers on patios or even balconies.

Apricots
Apricot trees thrive in a wide range of soils, but require a well-drained location to avoid root rot. These trees not only produce delicious fruit, but they're attractive additions to your Pueblo garden. Delicate pink flowers cover the tree in the spring, followed by beautiful green foliage and juicy apricots by mid-July or August. In the autumn, the leaves turn yellow before falling. Apricot trees prefer full sun and are not drought-tolerant, and are available in full-sized or dwarf varieties. The trees are self-fertile, but do tend to produce more fruit when two or more varieties grow near one another. http://www.ehow.com/list_7364693_cherry-trees-grow-colorado.html

Citrus trees >  You can grow citrus trees in pots in Colorado; but, you will need to bring them inside in the winter. There are now many varieties of dwarf citrus trees that are ideal for bringing indoors -- lemons, limes, oranges, kumquats, grapefruit, tangelos, etc. http://dwarfcitrus.com/knowledgebase/view/901/Can_I_grow_citrus_trees_in_Colorado_Lemon_specifically.html 

Cherry trees > http://www.ehow.com/list_7364693_cherry-trees-grow-colorado.html