Host an Event Volunteer Join Tickets

Support the plant database you love!

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

Monday - June 13, 2005

From: Austin, TX
Region: Southwest
Topic: Pests, Trees
Title: Black walnut herbivory
Answered by: Nan Hampton and Joe Marcus

QUESTION:

We moved to Texas just about a year ago and have loved it here. This past January we visited the Wildflower Center and obtained some black walnut seeds. Up until last night the tree was doing well planted in our temporary five gallon bucket. Yet, I discovered this morning that something has nearly chewed off the entire tree from its roots. We also 'had' flowers in a hanging pot that have also met their demise. What has been eating our tree and plants?

ANSWER:

The most likely culprits are squirrels or rats. Both of them are great chewers and both could gain access to hanging pots as well as the walnut tree in the bucket. Deer are a possibility for the hanging pot if it isn't hanging too high, but not for the walnut. They might nibble on the leaves, but would be very unlikely to chew through the stem of the walnut.

 

More Pests Questions

Caterpillars ate my Sophora in La Mesa, CA.
July 06, 2011 - Before I noticed what was happening, my newly-planted 1 foot tall Sophora secundiflora was eaten by caterpillars. It now has no foliage. Do you think it will leaf out again?
view the full question and answer

Black coloration on Star Magnolia is probably sooty mold.
November 21, 2008 - I have a star magnolia where 90% of the bark has turned black. It almost looks burned. The tree has decent buds set for next spring. What is causing the bark to turn black?
view the full question and answer

Western soapberry dropping leaves in San Antonio
June 03, 2013 - My Western Soapberry tree (China berry?) Suddenly started dropping full, perfectly healthy green, leaf units. Now half the tree is turning yellow. There is a second tree in the yard not far from this ...
view the full question and answer

What causes rock rose branches to snap off?
August 30, 2013 - my small texas rock rose branches keep snapping in the center. What is causing this and what can I do?
view the full question and answer

Webs on trees and porch
August 21, 2008 - i have webs all over my semi covered porch in my back yard. i have noticed these small webs are also on the trees in my backyard. what are they and are they dangerous to the trees or my family who sit...
view the full question and answer

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