Fraxinus pennsylvanica 'Patmore'

Patmore Green Ash

Fraxinus pennsylvanica ‘Patmore’ — commonly called Patmore Green Ash — is a hardy, fast-growing, deciduous tree valued for its strong, uniform structure and excellent cold tolerance. It forms a dense, upright oval canopy with a straight central leader and well-spaced branches, making it a dependable shade and street tree. The compound leaves emerge dark green, provide a full summer canopy, and turn clear yellow to golden-yellow in fall.

Mature Size:
Width: 35–45 ft
Height: 45–55 ft

USDA Zones: 2a–7b
Light: Full sun
Soil: Average, well-drained soils; highly adaptable to a wide range of soil conditions, including clay and urban environments
Water: Moderate; tolerant of drought and periodic wet soils once established

Wildlife: Provides habitat for birds and wildlife

Features & Landscape Uses:
Form: Upright oval canopy with a strong central leader
Excellent cold hardiness and reliability
Uniform branching ideal for street planting
Good yellow fall color
Fast-growing shade tree

Maintenance:
Prune when young to maintain strong structure
Monitor for pests, especially emerald ash borer
Adaptable but benefits from good establishment care

Plant type

Deciduous Tree, Shade Tree

Height

45-55'

Width

35-45'

Hardiness zones

3–8

Sunlight

Full Sun, Partial Shade

Growth rate

Moderate

Bloom time

Spring

Leaf color

Dark Green

Fall color

Yellow

Soil

Average, Highly Adaptable, Well Drained

Landscape use

Accent Plant, Provide Shade, Specimen, Street Tree

Shape

Oval/Rounded, Upright

Bark

Fissured

Deer resistant

Yes

Salt tolerant

Yes

Drought tolerant

Yes