This is the largest root depth study to date, in terms of total numbers and variety of species. A mature pecan tree stands about 150 feet (45.5 m.) tall with a spreading canopy. Large trees with tap roots, such as pecan trees, may affect soil volume to a depth greater than the 30 inches indicated above. From these large lateral roots develop the fine root system, which extends out into the soil, forming a dense root mass that grows within the three-foot depth … Dig the hole about the same depth as the tap root and root system and no deeper. Most heeling bins are not deep enough for pecan trees to be stood upright, so they should be heeled in laying at an angle so all roots … The tree has a long, strong tap root system. Pecan Planting Guide: Location and Preparation. This configuration of underground … The best results are obtained when establishing orchards with trees planted during July and August. Trim each tap root to a length of 1m with a sharp spade. CARE OF BAREROOT PECAN TREES. The tap root … Dig holes large enough to spread roots out without cramping, usually 2-3 feet wide and deep enough to accommodate the length of the tap roots. There is evidence that large pecan trees dry soil to the "water table" which causes it to shrink for a great depth. Where pecan trees have been removed to construct a building, the soil where the pecan tree … Of the >500 trees investigated for root depth, roots at 7 and 9 feet [2.1 and 2.7 meters] deep were the most common depth. With heavy soils, holes should be about 18 inches deeper than the length of the tap root. Some trees that evolved in savanah environments have a secondary root … Then carefully remove the young trees … One tree had roots 23 feet [7 meters] deep. FOr the most part the deep tap root is a myth. Nursery trees. Adequate Depth: Deep, loose, permeable soils are needed. Heel in trees in a shady place and keep roots moist if they cannot be set immediately upon arrival from the nursery. When establishing an orchard, do so in July and August. This is the main part of the root system that supports the tree. These lateral roots penetrate the soil 4 feet deep and extend laterally to 90 feet. Plant trees at the same depth … The Root System of Oak Trees. Fine Roots. Growth of pecan tree tap roots depends upon depth of the static water … Because it is not visible like the treetop, a tree's root system is not given the appreciation it warrants. Plant the tree in a location with soil that drains freely to a depth of 5 feet (1.5 m.). The pecan-nut tree is deciduous and can therefore only be transplanted during the winter. Growing pecan trees … The tap root is usually extra long and generally should not be pruned when canned. Most tree roots exist in the first 8-12 inches of soil. When ordering pecan trees the nurseryman should be aware of some facts about them. The water table should be at least 10 feet below the surface. You don't want the pecan tree to "settle" deeper into the hole, as it is sensitive to proper planting depth. Based on this study, one can safely say that no trees … The pecan nut tree is deciduous and can be transplanted only in winter. most tap rooted trees will shead the taproot as they mature. The pecan tree has a long, strong tap-root system.