Native Plants
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.
Did you know you can access the Native Plant Information Network with your web-enabled smartphone?
Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.
rate this answer
Tuesday - May 31, 2011
From: sonora, CA
Region: California
Topic: Vines
Title: No Grapes on Vines in Sonora, CA
Answered by: Mike Tomme
QUESTION:
We have lived in our home since 2002 and have a grapevine that grows beautiful green lush leaves and vines every year but never has produced grapes. What can I do to get some grapes on this vine?ANSWER:
You don't mention whether your grape is a native (wild) grape or a domesticated variety. Most natives of the genus Vitus are dioecious meaning the staminate (male) flowers and pistillate (female) flowers are borne on different plants. So, it is entirely possible that your plant is a male, which would explain the lack of grapes. Alternatively, your plant may be a female, but there aren't any males close enough by to provide the necessary fertilization.
A publication from the Universtiy of Wisconsin Extension Service says it is possible to determine if a grape plant is a male by closely examining the flowers and noting the abscence of the stigma, style and ovary. Here is a publication from the University of Illinois Extension service that has drawings showing the parts of a flower: Flower Parts.
During the thousands of years that people have been cultivating grapes, many of our domestic varieties have been selectively bred to have both male and female flowers on the same plant. This increases vineyard efficiency by eliminating all those unproductive males.
More Vines Questions
Can you root a crossvine?
May 31, 2009 - Can you root a crossvine?
view the full question and answer
How to propagate Clematis texensis in Austin, TX?
May 14, 2012 - How do I propagate a Clematis texensis Buckl. Scarlet leatherflower from the seed pod?
view the full question and answer
Identification of heartleaf vine
May 16, 2010 - Howdy!
I had a plant that I would like to replace but I don't know what it is, I was hoping you could help. It was a climbing vine with large (>6") heart-shaped leaves. The underside of the leaves ...
view the full question and answer
Chlorosis in Texas Wisteria from Blanco TX
November 05, 2012 - Just noticed a Texas Wisteria I bought last month and it is already looking chlorotic. Mixed compost in w/the dirt it is planted in but I don't think that will be enough. Is Blanco soil too alkaline?...
view the full question and answer
Niagara and Concord grape crop failure
September 01, 2008 - Hi, I have been growing niagara grapes and concord grapes for 3 years now and this year I found myself without any fruits. The plant itself if full of leaves and is healthy. I was wondering why this w...
view the full question and answer
Support the Wildflower Center by Donating Online or Becoming a Member today. |