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Plant library  ·  Shade Trees

Kentucky Coffeetree

Gymnocladus dioicus

Kentucky coffeetree is a bold native shade tree for large, sunny spaces in USDA Zones 3 through 8. Reaching about 55 feet tall and 35 feet wide, it brings a broad, structural presence without needing a densely planted setting around it. Its coarse bark, large pods, and late-spring to early-summer bloom give it interest beyond the growing season. The drought tolerance and comfort with alkaline soil make it a useful choice where a large tree must handle demanding urban or dry conditions.

Sunlight Full Sun
Water Low
USDA zones 3–8
Planning spacing 35 ft
Typical mature size 55 ft tall, 35 ft wide
Typical bloom Late spring - early summer

Kentucky Coffeetree spacing and mature footprint

Space Kentucky Coffeetree 35 ft apart, measured center to center (10.7 m).

The mature spread is about 35 ft (10.7 m), so neighboring plants just meet at maturity without crowding.

Treat 35 ft as a planning baseline — cultivar and local growing conditions shift the final footprint.

Compare with the full shade tree spacing chart

Three plants set 35 ft apart, center to center; shaded circles show the 35 ft mature spread.

Placement and use

Give this tree a position where its mature canopy can stand clear of roofs, overhead lines, driveways, and narrow side yards. Use it as a lawn specimen, a large-scale anchor at the outer edge of a planting area, or a street-facing tree with ample soil volume. Its open, irregular character suits designs that need filtered rather than solid shade beneath the canopy. Keep primary paths and sitting areas outside the expected drop zone of large pods if pod cleanup would interfere with regular use.[1][2]

Spacing and mature footprint

Plant Kentucky coffeetrees 35 feet apart, center to center, when repeating them in a broad lawn, parking-edge planting, or large property line. That spacing corresponds to its roughly 35-foot mature width, so neighboring canopies will meet or lightly overlap as they age. Reserve a full canopy-radius zone around each trunk rather than filling that space early with permanent shrubs or structures. Set beds and paths far enough away to preserve access for mowing, mulching, and eventual cleanup.

Sun, water, and soil

Place Gymnocladus dioicus in full sun, with open sky above and enough root room to develop as a long-lived shade tree. Its low water needs make it appropriate for sites that are not routinely irrigated after establishment. It also tolerates alkaline soil and urban conditions, allowing it to serve in exposed lawns, broad curbside strips, and other hard-working landscape spaces where many large trees would be less adaptable.

Seasonal notes

The canopy leafs out late in spring and drops its leaves early in fall, leaving a longer period of open branches than many shade trees. Plan that seasonal openness into views, winter light, and the planting beneath it. Greenish-white flowers arrive from late spring into early summer. On female trees, large pods ripen in fall and can remain visible into winter, extending seasonal display but adding debris beneath the canopy.[1][2]

Planning caveats

Allow room for fallen leaves and, on female trees, substantial seed pods. A male selection avoids pod litter, which can be especially useful beside patios, play areas, parking spaces, and frequently swept walks. Do not treat drought tolerance as a reason to crowd the root zone with paving or compacted planting. This is a large tree best reserved for sites where its canopy, seasonal debris, and long-term access needs can be accommodated without compromise.[1][2]

Growing facts

Botanical name
Gymnocladus dioicus
Type
Shade Tree
Category
Shade Trees
Lifecycle
perennial
USDA hardiness zones
3–8
Sunlight
Full Sun
Water
Low
Planning spacing
35 ft
Typical mature size
55 ft tall, 35 ft wide
Typical bloom season
Late spring - early summer
Plan a garden with kentucky coffeetree

References

  1. Kentucky Coffee Tree - Gymnocladus dioicus — North Carolina Extension Gardener Plant Toolbox
  2. Gymnocladus dioicus - Plant Finder — Missouri Botanical Garden