Open grown pecan trees have massive trunks and oval or rounded wide spreading crowns of branches that extend far down the trunk. Forest trees have a straight trunk and compact, pyramidal crowns. It bears within 6-10 years of planting. The crops of sweet nuts are abundant and contine regardless of age. It is difficult to transplant because of the long taproot it develops. (Plant multiple trees to ensure pollination) (zones 5-9)