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

Tuesday - July 10, 2012

From: BOCA RATON, FL
Region: Southeast
Topic: Diseases and Disorders, Trees
Title: Sticky sap (honeydew) on car
Answered by: Jimmy Mills

QUESTION:

MY CAR IS CONSTANTLY COVERED WITH STICKY SAP. I LIVE IN AN AREA WITH MANY COCONUT PALMS AND OTHER TREES. COULD THE SAP BLOW AROUND EVEN THOUGH I KEEP CHANGING THE PARKING?

ANSWER:

It sounds as  if you are experiencing the onslaught of honeydew. Honeydew is a waste-product of aphids and other sap-sucking insects such as scale. As honeydew is excreted by the sap-sucking insects, it becomes airborne and falls and coats any surface upon which it lands in the area.

This article from University of Minnesota Extension (use this link to get to the Sap Removal Article), another from the University of Kentucky College of Agriculture, and a third from the University of California Davis  give a rather thorough explanation of honey dew and aphids, and their effects on plants. You may also notice blackening of the plants under the trees because of an infestation of sooty mold that grows on the honeydew.

If you Google “car covers” on the web, you will find products that can protect your car from this sticky mess.

 

More Trees Questions

Problems with tuliptree in North Salem IN
September 02, 2009 - I have a tulip tree and it looks like it is dying. The limbs are starting to turn bright blue. Do I have an insect problem or is it from a lightning strike?
view the full question and answer

Looking for a tree to plant as a memorial in Leesburg, GA.
September 09, 2010 - I'm looking for tree to plant as memorial to my brother who died. It must be native, for South Georgia, zone 8, open fields. It should provide mast for wildlife. Heat zone 8, good drought-tolerance. ...
view the full question and answer

Propagating Magnolia grandiflora from Murfreesboro TN
August 03, 2011 - There are several Magnolia grandiflora (Southern magnolia) that have been planted in my neighborhood in middle Tennessee by a landscaping company, and now that they all appear to be producing seeds, ...
view the full question and answer

Oak trees losing leaves in Longview, Texas
August 18, 2009 - One of my oak trees is losing its leaves (it is the first week in August). They are turning brown and falling at an alarming rate. The ground under this tree is covered, but my other trees seem unaffe...
view the full question and answer

care of Red Oak seedling; Quercus buckleyi
October 30, 2007 - We purchased one of the Red Oaks seedlings for sale to members from the LBJ Ranch ($45). Now that we have it at home we are wondering about the care and feeding. We failed to ask any questions or pi...
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
© 2015 Lady Bird Johnson Wildflower Center