Autumn Purple Ash
Autumn Purple ash is a medium size shade tree grown for the striking purple color of its leaves in fall. It develops a uniform, rounded crown as it matures. Due to the presence of the emerald ash borer in Colorado, tree care professionals are no longer recommending ash trees be planted in Colorado.
Autumn Purple Ash
Autumn Purple ash is a medium size shade tree grown for the striking purple color of its leaves in fall. It develops a uniform, rounded crown as it matures. Due to the presence of the emerald ash borer in Colorado, tree care professionals are no longer recommending ash trees be planted in Colorado.
Plant details
Botanic Name
Fraxinus americana 'Autumn Purple'
Pronunciation
FRAK-si-nus a-mer-ih-KAY-na
Mature Height
40 to 50 ft.
Mature Spread
40 to 50 ft.
Water usage
One Droplet: Water twice per month or less, once established.
Two Droplets: Water about once per week, once established.
Three Droplets: Water about twice per week, once established.
Flower Color
green-yellow
Bloom time
inconspicuous
Colorado Native
No
Natural Habitat
species is native to eastern North America
Light Requirements
sun
Cold Hardiness
USDA zones 3-9
Elevation Limit
hardy to 6,500 ft.
Performance
There is a beautiful autumn purple ash growing at the Xeriscape Garden. It has a moderate growth rate and a uniform, rounded shape. The fall color is very attractive.
Maintenance
Prune when young to achieve a structurally sound tree. For existing trees, protect them from emerald ash borer once the insect is found within a 50 mile radius. It is currently limited to the Boulder/Denver area.