Fraxinus pennsylvanica 'Patmore'
Patmore Green Ash

Fraxinus pennsylvanica ′Patmore′ - Summer Habit
Conservation status
Apparently Secure
 Plant Type:
 :
 Hardiness:
 Deciduous / Evergreen:
 Flower Notes:
Green (Spring; not ornamentally important)
 Foliage Notes:
Green (Lustrous, dark green summer foliage); Yellow (Variable yellow fall foliage)
 Ultimate Height:
50-70 feet
 Ultimate Spread:
35-45 feet
 Bloom Times:
 Light Requirements:
 Soil Notes:
Widely adapted to soils
 Maintenance:
 Diagnostic Characteristics:
Leaves are opposite, pinnately compound, 12" long with 5-7 serrated leaflets. Petioles not grooved and are flat across top of leaf scar (vasculature still U-shaped). Bark deeply furrowed into diamond pattern.
 Purdue Plant Doctor

Additional Information

'Patmore' is a vigorous male, seedless tree and is considered to be superior to many Green Ash cultivars, including 'Marshall's Seedles'. An unattractive ash flower gall (formed by mites) can develop on male flowers and persists into winter. Emerald Ash Borer is severely affecting all species of this genus. Damage can be prevented with the appropriate pesticide, but the treatment cost will eventually exceed replacement cost.

The Purdue Arboretum is a collaboration between the Department of Horticulture and Landscape Architecture and Administrative Operations

Purdue Arboretum, 625 Agriculture Mall Dr, West Lafayette, IN, 47907
© 2026 Purdue UniversityAn equal access/equal opportunity universityCopyright ComplaintsMaintained by Purdue Arboretum Explorer
Contact Purdue Arboretum at arboretum@purdue.edu for accessibility issues with this page | Accessibility Resources | Contact Us