Juglans major Juglans major Juglans major (literally, the larger walnut), also known as Arizona walnut, is a walnut tree which grows to with a DBH of up to at elevations of in Texas, Oklahoma, New Mexico, Arizona, and Utah. It also occurs in Mexico as far south as Guerrero. Common names include Arizona black walnut (as it belongs to the "black walnuts" section "Juglans" sect. "Rhysocaryon"), and the Spanish name nogal cimarrón (cimarron walnut). In moister areas, the tree features a single, stout trunk; there are usually several slender trunks in drier situations. The 8–14 in long pinnately compound leaves bear 9–15
Fruit tree pollination a pollinator tree. Working from an old Spanish variety, "Tuono", researchers in 2008 started making available new self-fertile varieties that more closely match the qualities of the popular "Nonpareil" almond—including varieties "Lone Star" and "Independence". While self-fertile trees do not require pollen from a second tree variety for fruit / nut set, they still depend upon insect pollination for good production. Almond growers with self-fertile almonds report excellent nut set with half (or less) the number of bees in the field. Like apples, pears are self-incompatible and need to attract insects in order to be pollinated and produce fruit. One