Autumn Purple Ash

Fraxinus americana ‘Junginger’

This tree profile is shared for educational purposes. Urban Forest Nursery does not currently grow this variety, but it remains part of ongoing discussions around urban tree selection.

Autumn Purple ash (Fraxinus americana 'Junginger') as a street tree in an urban setting

UPDATE 2026: Unfortunately, we and most other tree nurseries no longer grow any Fraxinus (Ash) because of their susceptibility to the Asian Ash Borer.

The first time I really noticed Autumn Purple Ash tree was in the fall in Puyallup, Washington. I rounded a corner and saw what appeared to be large, round, purplish-orange globes on tree trunks. They were spectacular; at least they were that fall. That is one thing I have noticed both in the field, and especially in the nursery. Same trees can turn very different shades of their “described” fall color depending on the moisture and temperature we are having that fall. Whatever the year, though, the Autumn Purple Ash seldom disappoints anyone for fall color.  Of note is the fact that the Autumn Applause Ash has a much darker purple fall color.

Close-up of an Autumn Purple ash leaf showing shape and veins

The size of these medium shade trees can reach approximately 45′ tall and wide, providing a medium size oval form tree. Healthy twigs and buds are large and fat, and the tree has a clean character to it. The opposite pinnately compound leaves emerge a light shiny green, then darken through the year. After their impressive fall color, the leaves drop nearly all at once; perfect for one raking.

The literature lists numerous disease and insect problems for the American Ash varieties, but from my understanding, they are more serious in the East and Midwest. Most frustrating is the occasional “Ash decline”, or dieback, that occurs for no apparent reason. The most vigorous growing trees do not appear to develop as many problems.

When digging these trees in the nursery, the roots appear to be numerous, large, and aggressive. From this, I might assume that root barriers would be recommended when planted in narrow spaces, but I have not seen specific evidence of the need for this. Overall, I have found the Autumn Purple Ash to be an excellent performing medium size shade tree. I suspect its close relatives, the Autumn Applause, Windy City, and others are equally pleasing. As always, send any comments to me on the performance of these medium urban ash trees.

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Jim Barborinas
Owner of Urban Forest Nursery, Inc.
ISA Certified Arborist #0135
ASCA Registered Consulting Arborist #356
15119 McLean Rd.
Mount Vernon, WA 98273
jim@urbanforestnursery.com

What should I know about Autumn Purple Ash (Fraxinus americana ‘Junginger’)?

Here are some common questions we hear from people considering this tree:

Why is Autumn Purple Ash no longer grown by Urban Forest Nursery?

Autumn Purple Ash and other ash varieties are no longer grown due to their susceptibility to the Asian Ash Borer, which has made them unreliable for long-term landscape use.

What are the standout characteristics of Autumn Purple Ash?

This tree is best known for its striking fall color, ranging from purplish to reddish tones that can be especially vivid depending on seasonal conditions. It is a medium-sized shade tree with a clean, oval form and compound leaves that emerge light green and darken through the growing season.

How does Autumn Purple Ash perform in urban and landscape settings?

Historically, it has been considered a strong-performing shade tree with vigorous growth and good structure. However, it can experience occasional dieback and has been noted to have various insect and disease concerns, with some issues appearing unpredictably.

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