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

Climbing vines non-damaging to walls in Round Rock, TX
July 07, 2009 - Will fig vine tendrils grow into a stucco wall? Is there any climbing vine that won't damage a stucco wall over time?
view the full question and answer

Identity of vine growing in New Jersey
July 03, 2012 - Hello! I am hoping you may be able to help me out in identifying a vine plant that has started to grow from under my deck, through the lattice and up the outside of my deck. I bought the house 2 y...
view the full question and answer

Identification of cucumber-like plant with red fruit
July 01, 2012 - Hi; My name is Peter, live in Lewisville. When I walked through a park trail last year, I noticed a very strange vine described as the following: It is vine with leaves and stems (size and shape) lo...
view the full question and answer

Removing spent flowers from passion flower in Garland TX
May 26, 2009 - To encourage more blooms, should I remove spent flowers on my passion flower vine?
view the full question and answer

Plants to trail down wall in South Carolina
February 07, 2008 - Good day, I am putting in a stacked mortarless concrete block retaining wall which will rise to the forest floor along a cut bank - about 4 feet high. Each course steps back about one inch from th...
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