Rent Shop Volunteer Join

Q. Who is Mr. Smarty Plants?

A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

Share

Ask Mr. Smarty Plants

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
See a list of all Smarty Plants questions

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

Need help with plant identification, visit the plant identification page.

 
rate this answer
Not Yet Rated

Sunday - May 19, 2013

From: Naco, AZ
Region: Southwest
Topic: Pests, Trees
Title: Problems with Arizona Ash from Naco AZ
Answered by: Barbara Medford

QUESTION:

Hi Mr. Smarty.. Live in southeast corner of Az. My Az. Ash is diseased. Just noticed leaves are curled, (still green) and when I open the leaf it has a zillion little white, what look like mites or aphids..or specs of coarse ground salt. My trees are four years old and luckily the other one looks OK, so far. Help me out. What kind of spray or powder would you recommend? Thank you very much,

ANSWER:

This is most likely leaf-curl aphids infesting your Fraxinus velutina (Arizona ash). Here is a YouTube presentation on Ash leaf-curl aphids. Also,an article from Iowa State University Extension on Ash leaf-curl aphids. The important thing is to keep leaf litter picked up and properly disposed of in order to limit the spread of the beasties to your other ash trees.

 

From the Image Gallery


Arizona ash
Fraxinus velutina

More Pests Questions

Caterpillars attacking mountain laurel in Marble Falls TX
August 27, 2009 - What are the caterpillars that eat up our mountain laurel? Nothing left but a few stems.
view the full question and answer

Plants that animals won't eat from Ione WA
April 19, 2013 - In Ione Washington and need to know what types of plants and flowers I can plant that animals in that area wont eat?
view the full question and answer

Snails in the ice plants in California
May 31, 2011 - Ice plants and snails. Every morning when I go outside I see at least 20 or more snails. Is there a certain way that I should have planted them that would have prevented them from destroying my plant?...
view the full question and answer

Deer Resistant Evergreens for Pennsylvania Woods
March 12, 2015 - We are looking for evergreens that will grow in a partially shaded/wooded area and are ideally deer resistant. Hemlocks are out because of a parasite infestation in our area of Pennsylvania.
view the full question and answer

Control of borers attacking Prunus serotina
August 30, 2006 - Where can I find information to control borers that seem to attack only Prunus serotina v. exemia?
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.