Fraxinus uhdei
Photo by Forest and Kim Starr

shamel ash


  • This plant has a Plant Risk Evaluator rating of Low Potential Risk


Fraxinus uhdei is native to Mexico and is evergreen to semi-evergreen. It grows quickly to 25-30 ft. tall and 15 ft. wide within 10 years. It may eventually grow to 70-80 ft. tall and 60 ft. wide. It is a popular street tree in southern California, Arizona, and Mexico. It is shade tolerant and a prolific seed producer, and has become invasive in Hawaii.

It is dioecious, meaning that there are male and female trees. It is an emerging risk along streams in southern California and has escaped cultivation from Ventura south to San Diego County. See Calflora for its current distribution in California outside of cultivation.

Why is this plant not included on the invasive plant list?

Fraxinus uhdei was included as a candidate plant in the 2015 and 2016 nursery surveys. In 2015 it was found at 2.8% of nurseries, and in 2016 it was found at 0.9% of nurseries. It was not added to the list because it is not sold at enough nurseries in California (3% threshold) and because its revised Plant Risk Evaluator score puts it in the Low Risk category.

More information

For more information about this plant, please see the following resources: