Black poplar or European aspen: how to tell them apart?
Black poplar and European aspen look alike and are often mixed up. Here is how to tell them apart, feature by feature, with their photos and the details to look for.
⚡ The quick answer
Black poplar
Populus nigra
European aspen
Populus tremula
Aspen has rounded leaves with a flattened petiole that makes them tremble in the slightest breeze, whereas black poplar has more triangular leaves with a tapering tip, and thick bark fissured into diamond shapes.
🍃 Leaves
Diamond-shaped, with a tapering tip, flattened petiole that makes them flutter
Round, margin wavy-toothed, flattened petiole that makes them tremble in the slightest wind
🌸 Flowers
Drooping reddish catkins, before the leaves appear
Silvery-grey catkins before the leaves
🍎 Fruits
Capsules releasing cottony seeds in June
Small capsules with cottony seeds
🪵 Bark
Grey, deeply fissured, often covered with large burrs
Light greyish-green, smooth, with horizontal diamond-shaped patches
📏 Size
25 to 30 m tall
15 to 25 m tall
🗺️ Habitat
Riverbanks, alluvial plains
Open woodland, woodland edges, pioneer ground
⚠️ Toxicity
No known toxicity
No known toxicity
🔎 And from the European aspen side
Aspen has rounded leaves with a flattened petiole that makes them tremble in the slightest breeze, whereas black poplar has more triangular leaves with a tapering tip, and thick bark fissured into diamond shapes.
🌿 Go further
Want to practise spotting these details on real photos? Floraneo offers profiles and quizzes for dozens of look-alike species.
ℹ️ Educational profile — do not use it to judge whether a plant is edible or safe.