Grape Vines
Q.

grapevines;

Zone K0A 2H0 | Anonymous added on July 4, 2018 | Answered

My grapevines had numerous flowers this spring, most of which were fertilized and started to form berries, but a week later most of the tiny berries and flowers had disappeared and all I have left was stalks with weblike thread covering around the remaining portion of the bunches. I live in a rural area woodlot; zone 5A/4B. The 15 yr old vine is covering a small wooden archway and is protected from the prevailing west wind by a couple of 20 year old Gleditsia triacanthos var inermis. I have had very small quantities of white grapes from this vine in the past but have not had the quantities of flowering before this spring. I have mulched around the base with home made compost this growing season. Any ideas to promote more fruit please. Sorry, no photos. Regards Pat Nicholson

A.
A.Answers to this queston: Add Answer
Downtoearthdigs
Certified GKH Gardening Expert
Answered on July 5, 2018

I can't determine the issue from your description. I would suggest talking with your County Extension Service.
The links below will help you.
https://www.gardeningknowhow.com/extension-search

https://www.gardeningknowhow.com/edible/fruits/grapes/treating-grapevine-problems.htm
https://www.gardeningknowhow.com/edible/fruits/grapes/mites-on-grapevines.htm

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