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

Replacing river birch from Maple Grove MN
April 22, 2014 - How soon after taking out a river birch clump tree and grinding the stump would we be able to plant a new birch clump?
view the full question and answer

Evergreen sumacs for privacy along fence
August 02, 2014 - I would like to plant enough Evergreen Sumacs along our fence for privacy for the length of our backyard which is 60 ft. Fifteen feet on the left and right ends are shaded with the right side being d...
view the full question and answer

Bulging trunks on post oak
August 05, 2011 - I have a huge post oak with a codominant trunk that is bulging between the two main trunks. The bulging is causing the trunks to spread apart, so one of the trunks is getting much too close to the ho...
view the full question and answer

Evergreen hedge for NY
February 26, 2012 - I am looking for a native evergreen shrub that could be used as a hedge or privacy screen on the Rockaway peninsula in Queens county. It is a beach community with sand soil ( except where it has been...
view the full question and answer

What grows in Tampa FL
July 01, 2013 - Please let me know what grows in the backyard in Tampa, FL to provide screening and privacy?
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