Plant library · Fruit Trees
Carya illinoinensis
Pecan is a large, long-lived fruit tree that also becomes a major shade feature. At about 70 feet tall and 50 feet wide, it belongs in a permanent open area rather than a small yard bed. Its broad mature presence can anchor the outer edge of a large property, home orchard, or recreational landscape while leaving nearby growing areas available for smaller plants.
Place this tree where its canopy can develop away from buildings, overhead lines, and spaces that need dependable sun later in the day. Choose the site carefully before planting: pecans develop a deep taproot and can be difficult to move once established. Set it beyond paths, patios, play areas, and garden beds that would be crowded or shaded as the crown expands.[1]
Space pecan trees 40 feet apart, center to center, when laying out a group. Each tree still needs a mature canopy reserve about 50 feet across, or roughly 25 feet from trunk to canopy edge. Draw the full canopy circle on the plan before committing nearby beds, structures, or other permanent trees, and leave a clear approach for pruning, cleanup, and fall harvest.
Use a full-sun position with deep soil and moderate water. Give the rooting area open ground rather than a confined planting pocket, and avoid placing the tree where its large root zone must compete with foundations, paving, or densely planted ornamental beds. A broad mulch zone can keep the immediate trunk area distinct from lawn and planting borders.
Spring bloom precedes a fall nut harvest, so keep the ground and access route beneath the tree easy to reach late in the season. Treat its shade as a long-term change to the plan: sun-loving beds placed close to a young tree may lose the light they need as its canopy develops.
Plan for cross-pollination if nut production is a goal. Include at least two compatible pecan varieties in the overall layout rather than treating one tree as a self-contained harvest feature. In a larger planting, arrange pollinating trees through the group so they remain close enough to serve one another after the trees mature.[2]
Editorial content updated 2026-07-20.