Acer negundo seed | Box Elder, Ashleaf Maple
LATIN NAME: Acer negundo COMMON NAME: Box Elder, Ashleaf Maple
Botanical Profile
Box elder is native across a huge swathe of North America, from Canada down into Mexico, and stands out from other maples by having compound, pinnate leaves made up of several leaflets rather than the single lobed blade typical of the genus, a foliage form that more closely resembles ash than classic maple. It is fast-growing, tolerant of wet, dry, poor and disturbed soils alike, and separate male and female flowers appear on different individual trees.
Science & Conservation
Box elder’s extreme adaptability and rapid growth have made it a widely used subject in urban forestry and ecological restoration research, valued for quickly establishing tree cover on disturbed or marginal sites, though the same vigour has led to it becoming a naturalised, sometimes weedy species when introduced outside North America, particularly across parts of Europe and Asia, where its spread is studied by invasive-species researchers. The tree is also the primary host plant for boxelder bugs, whose population dynamics have been studied partly through their close ecological association with this species.
Landscape & Practical Uses
Box elder’s fast growth and tolerance of poor or disturbed soils make it useful for quick shade and windbreak planting in difficult sites, and its sap can be tapped for a modest maple-syrup-style product in regions without access to sugar maple. Because it self-seeds prolifically and has become invasive in some introduced ranges, it is best planted with awareness of local conditions and, in some regions, best avoided in favour of less aggressive native alternatives.
Growing From Seed
A period of cool, moist stratification helps even out germination, after which the seed should be sown into a loose, well-drained mix. This is one of the easiest and most adaptable maples to establish, tolerating a wide range of soil and moisture conditions, and seedlings typically grow quickly once their first distinctive compound, ash-like leaves appear.
Related Maples
Explore other maples in this collection: Acer opalus (Italian Maple), Acer buergerianum (Trident Maple), Acer davidii (Père David’s Maple, Striped-Bark Maple), Acer ginnala (Amur Maple).