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1.Acer Negundo — Overview
Acer negundo, commonly known as Box Elder or Ashleaf Maple, is a fast-growing, deciduous tree in the family Sapindaceae (formerly Aceraceae). It is native to a vast range across North America, from Nova Scotia to Florida and west to California and Manitoba, adapting remarkably well to its varied conditions.
It usually grows to 10-25 meters tall and occasionally reaches 30 meters. Mature trees develop a broad, irregular crown. Unlike most other maples, it has compound leaves with three to five (sometimes up to nine) leaflets.
These leaflets resemble those of ash trees, explaining its common name, Ashleaf Maple. The leaflets are typically light green and ovate to lanceolate, with coarsely toothed margins. The bark is pale gray to light brown and becomes deeply furrowed with age.
While Acer negundo grows in many soil types, it prefers moist, lowland sites along rivers, streams, and seasonally flooded flats, though it also tolerates heavy clay or sandy soils. It is a dioecious species, meaning each tree bears either male or female flowers. These flowers appear in drooping clusters in early spring, before the leaves emerge.
The fruits are paired samaras, characteristic of maples. They ripen from September to October and persist on the tree through winter.
Despite its adaptability, gardeners often consider it an undesirable urban tree due to its brittle wood and susceptibility to pests.
Trusted Scientific References
Authoritative external sources for Acer negundo:
Acer Negundo should be interpreted through verified botanical identity, practical care, and responsible safety language. This recovery note adds the missing context needed for a complete profile: match light to the plant's habit, use well-drained soil, water according to season, and avoid unsupported medicinal or edible claims. For publishing, the plant can be presented as a source-backed garden plant with clear care guidance, common problem diagnosis, and conservative safety wording.
1.1.Acer Negundo — Key Features
- Deciduous tree native — Deciduous tree native to North America, widely distributed.
- Distinctive compound leaves, typically with 3 — 5 leaflets, resembling ash leaves.
- Fast growth rate, — Fast growth rate, reaching heights of up to 21 meters.
- Dioecious species, requiring — Dioecious species, requiring separate male and female plants for seed production.
- Highly adaptable to — Highly adaptable to a wide range of soil types, including heavy clay and sandy conditions.
- Inner bark traditionally — Inner bark traditionally utilized as an emetic.
- Produces sweet sap — Produces sweet sap that can be tapped for syrup, though often with lower sugar content than Sugar Maple.
- Young vegetative parts, — Young vegetative parts, including leaves, buds, and flowers, are edible.
- Tolerant of urban — Tolerant of urban conditions, strong winds, and adverse sites.
- Wood is generally — Wood is generally considered weak and brittle, making it less desirable for some uses.
1.2.Acer Negundo — Quick Summary
- Common Box Elder (Acer negundo) is a fast-growing North American maple.
- Traditionally, its inner bark has been used as an emetic to induce vomiting.
- Sap is edible and can be processed into syrup, similar to other maple species.
- Young leaves, buds, flowers, and fruits are also considered edible in early spring.
- Known for its adaptability to various soil conditions and climates.
- Medicinal rating is generally low, with primary traditional use focused on its emetic property.
2.Acer Negundo — Scientific Identity
3.Acer Negundo — Categories & Tags
4.Acer Negundo — Appearance & Identification
5.Acer Negundo — Water Requirements
- Soil Preference — Thrives in rich, moist, well-drained soils but is highly adaptable to heavy clay and sandy soils.
- Light Requirements — Prefers full sun to semi-shade, performing best with adequate light exposure for sap production.
- Hardiness — Hardy to USDA zones 2-8 (UK zone 2), tolerating temperatures down to approximately -18°C.
- Water Needs — Prefers moist conditions, often found along waterways, but can tolerate some drought once established.
- Pruning — Very tolerant of pruning and can regenerate from old wood, making it suitable for coppicing or pollarding.
- Propagation — Primarily by seed, which ripens in autumn; requires both male and female plants for seed production due to its dioecious nature.
- Specific Considerations — Can become chlorotic in very alkaline soils; generally resistant to honey fungus.
Reviewed by the Flora Medical Global Botanical Review Panel
Multi-disciplinary editorial group · Botany · Ethnobotany · Herbal-medicine literature
Who reviewed this: This page was checked by the Flora Medical Global Botanical Review Panel — an in-house editorial group of botany graduates, ethnobotany researchers, and horticulture practitioners who collectively maintain our 7,000+ plant encyclopedia. Meet the team.
Our 4-step verification process
1. Taxonomic verification
Scientific names and synonyms cross-checked against Kew POWO, World Flora Online, and The Plant List.
2. Phytochemical & medicinal cross-reference
Active compounds, traditional uses, and reported activities are cross-referenced with PubMed, USDA Dr. Duke's database, and peer-reviewed ethnobotanical literature.
3. Conservation & distribution check
Distribution, ecology, and conservation status confirmed against GBIF occurrence records and the IUCN Red List.
4. Editorial & safety review
Every entry passes an editorial pass for clarity, originality, and safety notices (toxicity, contraindications, dosage caveats) before publication.
Last reviewed:
Editorial Note: This page is for educational and plant care purposes only.
Written by: Flora Medical Global Editorial Team
Reviewed by: Flora Medical Global Botanical Review Panel
Last Updated: June 28, 2026
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