En EspaŅol

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
Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.
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 Trees Questions

Reducing Allergens in Yards and Gardens
January 31, 2012 - What are some allergen-free native plants to Central Texas that thrive in the soil and can survive in the weather?
view the full question and answer

Soapberry; monoecious or dioecious?
May 26, 2009 - I have a soapberry (Sapindus saponaria L., I believe) tree growing in my yard. I planted it 3 years ago hoping for soapberries, but have not seen any yet. It has flowered each spring, but has not set ...
view the full question and answer

Trees for Parker, Colorado that will not harm horses
March 21, 2009 - we are searching for trees that will grow well in Parker Colorado and not be poisonous to our horses
view the full question and answer

Problems with Acer rubrum in Sacramento
September 06, 2009 - We live in Sacramento California and have two seven year old Magenta Maple trees in our front yard that are planted about 65 feet from each other. This is the second year in a row that the tree on th...
view the full question and answer

Protecting the Texas madrone from construction damage
January 11, 2010 - What is the best way to protect Texas Madrone trees (small, 8'-10') from damage during construction of a new home on a site with some single, some grouped Madrones?
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP
© 2014 Lady Bird Johnson Wildflower Center