Also known as Downy Ash · Mótó'e · Northern Red Ash
Green ash (Fraxinus pennsylvanica) is a fast-growing deciduous tree native to North America, known for its tolerance to urban conditions and adaptability.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun
75% intensity
Thrives in full sun but can tolerate partial shade. Optimal growth and flowering occur with at least 6 hours of direct sunlight daily.
Moderate
50% intensity
Prefers consistently moist soil, especially when young or during dry periods. Avoid waterlogged conditions.
Adaptable, prefers moist, well-drained soil
50% intensity
Adaptable
50% intensity
Hardy in USDA zones 2-9. Tolerates both hot summers and cold winters, showing good resilience across various climates.
Moderate
50% intensity
Benefit from balanced fertilizer in spring. Avoid excessive nitrogen, which can promote weak growth. Soil testing can guide specific needs.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
None
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water regularly, especially during dry spells, ensuring the soil remains consistently moist but not waterlogged. Deep watering encourages strong root development.
Reduce watering frequency in winter when the plant is dormant. Monitor soil moisture by feeling the top few inches; if dry, it's time to water.
Prune to remove dead, damaged, or crossing branches. Early pruning can shape young trees, while mature trees benefit from structural pruning to maintain health and form. Make clean cuts just outside the branch collar.
Best time to prune is during dormancy in late winter or early spring.
Green ash can be propagated from seed, which requires stratification to break dormancy. Collect seeds in autumn and sow them in a protected location.
Cuttings can also be taken from semi-hardwood in summer, but success rates may vary. Grafting is another method used for specific cultivars.
Repotting is generally not applicable to mature trees. For container-grown young trees, repot every 2-3 years as needed, typically in early spring. Choose a pot that is slightly larger than the current one.
Use well-draining potting mix and ensure the root ball is kept intact.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Green Ash (Fraxinus pennsylvanica)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Lamiales |
| Family | Oleaceae |
| Genus | Fraxinus |
| Species | Fraxinus pennsylvanica |
Similar in genus Fraxinus
Answers based on plant encyclopedia data
