Rent Shop Volunteer Join

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

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

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

Control methods for Tribulus terrestris, Goatheads or Puncturevine
September 21, 2006 - We have some land that has so many goatheads we can't do anything with it. We would like to know what if anything will remove them from our place. There has to be something out there that will kill ...
view the full question and answer

Identification of vine in Ohio
March 26, 2010 - We were in our school's back yard and we found a vine that has green leaves and has a purple stem and we were just trying to figure out what is was? Can you help us out with that!
view the full question and answer

Planting Wisteria frutescens Against a House in Wisconsin
October 01, 2015 - I have a question about Wisteria frutescens ('Amethyst Falls'). I know it's far less aggressive than the non-native species, but how aggressive is its root system? Can I plant it close to my house ...
view the full question and answer

Native trees of Hornsby Bend in Austin, TX
April 10, 2013 - We are looking for a list of the trees occurring along and in the vicinity of the Colorado River at Hornsby Bend circa 1820.
view the full question and answer

Want a vine, non-toxic to dogs, for Reno, NV.
September 11, 2012 - I want a non toxic (to dogs) vine for Reno, NV
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.