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

Friday - August 09, 2013

From: AUSTIN, TX
Region: Southwest
Topic: Pests, Trees
Title: What clips green twigs from cedar elms?
Answered by: Guy thompson

QUESTION:

Many small cuttings (3-5 inches long) are dropping from large cedar elm. To my eye the ends look like breaks (not chiseled), but I can't imagine what would cause so many breaks, and so think something must be cutting. Ants? Grasshoppers (haven't seen any)? Squirrels?

ANSWER:

I noticed the very same thing on my cedar elm here in Austin some years ago.  After doing a bit of sleuthing I discovered that it was done by squirrels and only at a certain time of year. There must be something very tasty in the growing twigs just then.  The fairly extensive de-twilgging has continued every year since then, but the elm shows no ill effects.  I've come to consider it simply another pruning job to complement the pruning that I do regularly in other parts of my garden.

 

From the Image Gallery


Cedar elm
Ulmus crassifolia

More Pests Questions

Problem with Live Oaks in Mesa AZ
March 26, 2013 - I have two Evergreen Live Oaks in central Arizona. One is flourishing and getting new spring leaves from top to bottom. Its trunk is rough, has large grooves, and the spots where I've pruned look li...
view the full question and answer

Pruning live oak in Austin
April 28, 2012 - Hi, We recently purchased a house in South Austin and there is a huge Live Oak Tree about 6 feet from the back door (so so so love it!) The only real issues I have so far are: 1. Needing to trim a ...
view the full question and answer

Problems with rusty blackhaw viburnum in Austin
May 07, 2010 - I have a four foot rusty blackhaw viburnum. Last summer the leaves turned reddish and in the late summer most of them fell off. This February the plant started to leaf out and then bloomed. It has ...
view the full question and answer

Lopidea texana nymphs and adults feeding on Mountain Laurel in March
April 04, 2006 - What is the species name of the bright red bug (Miridae) nymphs and adults that are feeding on Texas Mountain Laurel leaves at this time (March 24) at the Wildflower Center?
view the full question and answer

Problem with leaves of Texas Ash in Austin
May 21, 2012 - We purchased a 3' to 4' Texas Ash in March 2012. The past few days I noticed new leaves at the top are curled under, have a milky substance on them, and more than a few ladybugs on them. What is thi...
view the full question and answer

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