YELLOWSTONE ARBORETUM
" Stewards of the Natural Environment "
Billings, Montana @ ZooMontana
Ash
Patmore Green Ash
Catalogue A# 0094-042 WW8
GPS 45D 43' 47" N / 108D 37' 22" W
Fraxinus pennsylvanica 'Patmore'
Family: Oleaceae
Common name: Patmore Green Ash
Origin: North America
Location: Old aviary, along path, behind fence
Number in accession: (1) questionable
​This 16 inch Green ash provides overall benefits of: $126 every year.
Tree or Plant Type: Tree
Foliage: Deciduous (seasonally loses leaves)
Native Locale: North America
Size Range: Large tree (more than 40 feet)
Mature Height: 50-60 feet
Mature Width: 25-40 feet
Light Exposure: Full sun (6 hrs direct light daily), Partial sun/shade (4-6 hrs light daily)
Hardiness Zones: Zone 2, Zone 3, Zone 4, Zone 5 , Zone 6, Zone 7, Zone 8, Zone 9
Soil Preference: Moist, well-drained soil, Wet soil
Acid Soils: Tolerant
Alkaline Soils: Tolerant
Salt Spray: Tolerant
Soil Salt: Tolerant
Drought Conditions: Tolerant
Poor Drainage: Tolerant
Planting Considerations: Aggressive, Weak wood and branch structure
Ornamental Interest: Fall color, Persistent fruit/seeds
Season of Interest: Early fall, Mid fall
Flower Color & Fragrance: Inconspicuous
Shape or Form: Oval, Round, Upright
Growth Rate: Fast
Transplants Well: Yes
Wildlife: Game birds, Insect pollinators, Migrant bird
CRITIQUE
​Due to susceptibility to emerald ash borer (EAB), green ash is not recommended for planting anywhere in this region and usually requires removal and/or replacement. Green ash is a highly adaptable native tree; very cold hardy and tolerant of a wide range of soil pH and moisture levels.
