En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Texas Mountain Laurel oozing sap in Spicewood, TX.

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

Thursday - July 05, 2012

From: Spicewood,, TX
Region: Southwest
Topic: Diseases and Disorders, Pests, Shrubs, Trees
Title: Texas Mountain Laurel oozing sap in Spicewood, TX.
Answered by: Joe Marcus

QUESTION:

We have a Texas mountain laurel that seems to be sweating. Oozing sap with no apparent signs of any type of bore holes, or holes made from any birds.

ANSWER:

Your Texas Mountain Laurel has likely been visited by some egg-laying insects.  Cicadas and Katydids are common causes of sap-oozing on trees and shrubs during the summer months.  Females of many of these insects have very sharp, sword-shaped appendages called ovipositors with which they pierce the surface of tree trunks and stems and lay their eggs beneath.  This piercing leaves a razor-thin wound in the bark of the plant that is nearly invisible, but through which sometimes copious amounts of sap may ooze.

Most plants have little ill-effect from being violated in this way.  However, large-scale ovipositing by some insect species can harm or even kill some plants.

Contact your AgriLife Extension Service agent for more information on this topic.

 

From the Image Gallery


Texas mountain laurel
Sophora secundiflora

More Trees Questions

Is a Brandywine Maple messy from Westchester IL
November 06, 2011 - Brandywine Maple: Does this tree produce sap, seeds or flower? As a home owner I can't afford more maintenance with clogged gutters or a sap covered car. Thank you.
view the full question and answer

Trees for privacy shield in Dublin, Virginia
April 16, 2009 - What are the best trees to plant for privacy in a small yard?
view the full question and answer

Galls on live oak tree in Austin
December 12, 2013 - I live in Austin, and have a 13 year old live oak in my yard. It has developed little spheres, kind of like green peas, on the underside of the leaves. What is it? Is it harmful? Is there somethin...
view the full question and answer

How fast do trees grow?
September 03, 2008 - Dear Mr. Smarty Plants I would like to know how to tell how much a tree will grow if the average of the trees are growing at the rate of approximately 3 to 3.5% annually. And how do they come up wi...
view the full question and answer

Replacements for photinia from San Antonio
August 31, 2012 - i just read your response to someone regarding Red Tip shrubs. You just saved me thousands of dollars ! I was getting ready to order over 250 of these to line my 2.5 acre fence line. What shrub would ...
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