YELLOWSTONE ARBORETUM
" Stewards of the Natural Environment "
Billings, Montana @ ZooMontana
Autumn Blaze Pear
Catalogue A# 2000-100 WW4
GPS 45D 44' 4" N / 108D 37' 33" W
Pyrus calleryana 'Autumn Blaze'
Family: Rosaceae
Origin: Native to Korea and China.Cultivar selected at Oregon State in 1969
Common name: Autumn Blaze Callery Pear
Location: South end of Waterways path on corner hill
Number in accession: 1
Note: Exceptional fall color-Photo on left 2018
This 25 inch Pear provides overall benefits of: $19 every year.
Tree or Plant Type: Tree
Foliage: Deciduous (seasonally loses leaves)
Native Locale: Non-native
Size Range: Large tree (more than 40 feet), Medium tree (25-40 feet)
Mature Height: 30-50 feet
Mature Width: 20-35 feet
Light Exposure: Full sun (6 hrs direct light daily)
Hardiness Zones: Zone 4, Zone 5, Zone 6, Zone 7, Zone 8, Zone 9
Soil Preference: Moist, well-drained soil
Acid Soils: Tolerant
Alkaline Soils: Tolerant
Salt Spray: Moderately Tolerant
Soil Salt: Intolerant
Drought Conditions: Tolerant
Poor Drainage: Tolerant
Planting Considerations: Aggressive, Commonly planted, Highly susceptible to ice damage, Weak wood and branch structure
Ornamental Interest: Fall color
Season of Interest: Mid spring, Early fall, Mid fall
Flower Color & Fragrance: White
Shape or Form: Pyramidal
Growth Rate: Moderate
Transplants Well: Yes
Wildlife: Insect pollinators
CRITIQUE
Callery pear has invasive traits that enable it to spread aggressively. This tree is under observation and may be listed on official invasive species lists in the near future. Review of risks should be undertaken before selecting this tree for planting sites. The various cultivars of this species are more commonly available than the species itself. Callery pear has a weak wood and branch structure and is susceptible to ice storm damage.