The Mahan pecan tree produces large crops of tasty pecans in late fall. The tree grows in USDA hardiness zones 6 to 9 where long hot summers and mild winters prevail.
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Mahan pecan trees come from a chance seedling planted in 1910. The parent trees of the Mahan are not known. Mahan is the parent of several well-known pecan varieties, including Kiowa and Choctaw.
The trees range in size from 70 to 150 feet in height with dark green foliage and a spreading canopy. Although Mahan self-pollinates, the tree produces more crops when cross-pollinated with another pecan cultivar. Since Mahan sheds its pollen in mid- to late-season, it should be pollinated with an early to mid-season pollen-producing tree.
Mahan pecan trees produce their first crop of nuts six years after planting. The first crop is usually small with production getting larger as the tree matures. Like most pecan trees, Mahan produces large crops in alternating years with a minimal crop the other years.