Tulip Poplar Tree Leaf: ID, Look-Alikes and Downsides

A tulip poplar tree leaf has four lobes and a flat, cut-off tip with a shallow notch, so the outline looks like a tulip flower or a square T-shirt. NC State Extension describes the leaves as alternate, simple and pinnately veined, 5 to 6 inches long, turning golden yellow in fall. Wikipedia gives 125 to 150 mm long and about as wide, and calls the tip truncated. That squared-off end is the feature to look for first.

The Nashville Tree Conservation Corps compares it to maple: both are lobed, but the tulip poplar's lobes are wider and fewer.

• Flowers. Cup-shaped and fragrant, yellow-green petals with an orange band near the base (NC State); Nashville Tree Conservation Corps gives late April into early June. They are often high in the crown, so fallen petals are the first sign.
• Fruit. A brown, upright cone of winged seeds 2 to 3 inches long that sheds through the winter (NC State).
• Bark. Smooth and gray-green when young; on mature trees gray-brown with interlacing ridges that form a diamond pattern (NC State, Nashville Tree Conservation Corps).
• Size. NC State gives 80 to 120 feet tall and 30 to 60 feet wide; Wikipedia calls it the tallest tree of the eastern North American deciduous forest, with a 58.47 m (191 ft 10 in) specimen in the Great Smoky Mountains. Grows in USDA zones 4a to 9b (NC State).

Despite the name, tulip poplar is not a poplar. Wikipedia places Liriodendron tulipifera in the magnolia family, Magnoliaceae, and says it is not closely related to true poplars, tulips or lilies. It is also sold as yellow-poplar lumber.

• True poplars and aspens (Populus) have unlobed leaves. Quaking aspen, for example, has nearly round leaves 1 1/2 to 2 1/4 inches across with small rounded teeth on flattened stalks (Wikipedia).
• Maples have more numerous, narrower, pointed lobes (Nashville Tree Conservation Corps) and paired winged seeds rather than a cone of samaras. Our maple leaf identification page shows the common species.

If the leaf ends in a flat, notched tip, it is a tulip tree.

NC State Extension lists the problems plainly:

• Weak wood. Fast growth makes the tree weak-wooded and prone to limb breakage in high winds.
• Sticky drip. Tulip tree scale and aphids secrete honeydew, which grows sooty mold on cars and patios below.
• Summer leaf drop. In hot, dry weather the leaves turn yellow and fall early, which is drought stress, not autumn.
• Diseases. Verticillium wilt, powdery mildew and cankers are possible.
• Placement. The Nashville Tree Conservation Corps advises not planting it very close to a building or next to roads and driveways that are salted in winter.

Given its eventual 80 to 120 foot height, the practical rule is to plant it only where a large tree and falling limbs will not hit a house.

• Wood. Wikipedia calls it very widely used where a cheap, easy-to-work and stable wood is needed; NC State names furniture and plywood, and Native Americans made dugout canoes from it. The USDA Wood Handbook gives yellow-poplar a side hardness of 540 lbf at 12% moisture and puts it in the "slightly or nonresistant" decay group, so it is a paint-grade indoor wood, not an outdoor one. See our yellow poplar wood page for the green-streaked boards.
• Pollinators and wildlife. NC State notes it supports pollinators and hummingbirds and is a larval host for swallowtail butterflies. Wikipedia says a 20-year-old tree can produce enough nectar for about 4 pounds of honey a year.
• State tree. It is the state tree of Indiana, Kentucky and Tennessee (Wikipedia).

WoodLens identifies tulip poplar from one leaf photo, and can also name the lumber from a cut end.

This page was drafted with AI help, and every fact was checked against the sources listed on the page.