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
1 rating

Saturday - August 17, 2013

From: Chappells, SC
Region: Southeast
Topic: Pests, Vines
Title: White sticky stuff on muscadine grape vines from Chappells SC
Answered by: Barbara Medford

QUESTION:

Muscadine vine has white sticky substance on leaves and vines, what is it?

ANSWER:

This sounds like aphids. Read this article from the University of California Integrated Pest Management Series on Aphids. Particularly note this paragraph:

"Low to moderate numbers of leaf-feeding aphids aren't usually damaging in gardens or on trees. However, large populations can turn leaves yellow and stunt shoots; aphids can also produce large quantities of a sticky exudate known as honeydew, which often turns black with the growth of a sooty mold fungus. Some aphid species inject a toxin into plants, which causes leaves to curl and further distorts growth. A few species cause gall formations."

Since Vitis rotundifolia (Muscadine) is largely a product of Southeast North America, please read this article from the University of Florida IFAS Extension Insect Pests on Grapes in Florida. Note this paragraph and look at the accompanying illustration:

"Grapevine Aphid, Aphis illinoisensis (Shimer)

Aphids feed on the foliage and vines of grape plants, but more serious injury results from the infestation of the developing fruit clusters. Dry weather contributes to the growth of aphid populations.

The grapevine aphid (Figure 6) is usually not important enough to necessitate specific treatments. Good production practices result in grapevines that are of sufficient vigor to tolerate some attack by aphids. Aphids are attacked by predators like ladybird beetle adults and larvae, and lacewing larvae that regulate their population."

 

From the Image Gallery


Muscadine
Vitis rotundifolia

More Vines Questions

Drought tolerant vine for Austin, Texas
May 17, 2014 - What kind of drought-tolerant vine can I plant outside my screened in porch in Austin, Texas, that will stay on a trellis and not grow into the screen?
view the full question and answer

Purchase source of Coral honeysuckle from New Boston TX
April 21, 2012 - I have been unable to find a supplier in the listings on your website for Lonicera Sempervirens. Many of them had a variety of different plants listed under this name but none were the 20' species. ...
view the full question and answer

Are berries of coral honeysuckle edible from Lufkin TX
May 21, 2013 - Are the berries of coral honeysuckle edible?
view the full question and answer

Native flowering vine for Central Texas
August 25, 2008 - Hi Mr. Smarty Plants, I need a Texas native, flowering, climbing plant to climb up a post or trellis. Any suggestions? Thanks!
view the full question and answer

Grape Vines and spacing for Portland, OR
September 10, 2009 - Dear Mr. Smarty Plants, I have a somewhat small south-facing yard next to my home (less than 8' wide). I would like to build a tall arbor for grapes that runs along the length of my home (about 4...
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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center