En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Webbing on the bark of a hackberry tree.

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

Wednesday - October 03, 2007

From: Austin, TX
Region: Southwest
Topic: Trees
Title: Webbing on the bark of a hackberry tree.
Answered by: Joe Marcus

QUESTION:

Dear Mr. Smarty Plants. We have a large hackberry tree in our back yard that has what appears to be extensive spider webbing covering large areas of the bark at the trunk . . and extending well up the larger branches of the tree. Is this spider related . . . or could this be a fungus of some sort?

ANSWER:

Your tree is probably playing host to a colony of harmless creatures called bark lice.  Bark lice are in a group of insects called Psocids.  In spite of their name, they pose no threat whatsoever to humans, pets or your trees.  Psocids feed on mold, pollen, lichen, algae and decomposing plant matter.  Much more common in Southern coastal areas, bark lice need high humidity to survive and thrive.  With the arrival of a dry front the bark lice and their webs will disappear within a few days.
 

More Trees Questions

Trimming non-native sago from Fresno CA
September 10, 2012 - I have a sago plant, fronds are hanging over into street, can the fronds themselves be trimmed back without removing the whole frond?
view the full question and answer

Do Maple trees and Poplars grow well in Amarillo,TX?
May 25, 2010 - Do maple trees and poplars grow well in Amarillo Texas? I love the fall reds, oranges, and yellows. If they don't grow well can you recommend some trees that have the color that will grow well?
view the full question and answer

Is it normal for the bark to fall off an oak tree in Austin, TX
May 02, 2013 - Is it normal for live oak bark to fall off when touched? I am afraid to get near them?
view the full question and answer

Holding an Acer rubrum in a container for two years
October 10, 2008 - Dear Mr. Smarty Plants, I am thinking about ordering a Red Maple tree that is cultivated from Mount Vernon. I appreciate the historic nature of such a tree. The tree will be shipped to me and is ...
view the full question and answer

Fan-Tex ash tree roots a problem near house foundation from Bryan TX
February 23, 2013 - DO I need to worry about Fan TX roots being a problem near house foundations?
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