Concord Grapes Small and Not Flavorful?

I planted 3 year old seeded Concord grapes about 5-6 years ago. I have never gotten a good harvest yet. I have plenty of grapes on the vines, but for the last three years the grapes have all been small and fairly flavorless. I do get a lot of vine growth during the summer. I live in Idaho and most my neighbor's grapes are great. I want to use my grapes for juicing. What am I doing wrong?

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Ana
Bronze Post Medal for All Time! 140 Posts

April 12, 20200 found this helpful

Here are some guide lines to the growing concord grapes. www.gardenguides.com/113881-grow-concord-grape-vines.html - It depends on a lot of things for a good harvest, Hope this helps!

poehere
Bronze Post Medal for All Time! 105 Posts

April 13, 20200 found this helpful

Where have you planted your grapes? They need full sunlight to grow and be protected from the wind. Too much shade is not good for them and will produce smaller grapes with less flavor. You may need to look at where you are growing these and they may need to be moved if you want a great harvest. You should find an area that get a lot of sunlight during the day and not a lot of shade. This should take care of the issues you are having.

You should only wanted the plants once a week and make sure you water them with at least an 8 inch deep trench filled with water. This is best for the plants and over water is very bad. I remember my grandmother had grape vines going out of her house and they were filled with tons of grapes. She hardly ever watered the plants and the plants stayed in full sunlight and it was very warm where she lived.

cybergrannie
Gold Feedback Medal for All Time! 949 Feedbacks

April 13, 20200 found this helpful

Since your neighbors have a good harvest it seems you have a perfect person to discuss what they may be doing differently that is producing such good results.

Questions:
Same type of grapes or different variety?
Their plants older than yours?
Take a good look at their vines during the day and see what differences in sunlight etc.
Watering about the same each week - shallow or deep watering?

Are you sure you are pruning correctly as this is most important or you will be cutting off your new grapes before they start. Ask neighbors for advice and read online instructions.

Same fertilizer? Too much too often will give green growth and few grapes.
This may be your biggest problem....

Did you plant plants correctly in the beginning so they are positioned correctly now? Take at look at yours and compare with neighbors.

I'm just saying that if at all possible - ask for advice from someone that seems to be having success with their grapes.

"Only fertilize your grape vines if the soil is very poor. Too much fertilization results in green top growth and little fruit."

If you do not wish to do this then maybe you could contact your county extension service and ask them for advice. They probably will have some suggestions but it would be best to have answers ready about fertilizer - type/how often/how much as well as watering system.

pickyourown.org/countyextensionagentoffices.htm

extension.umn.edu/.../growing-grapes-home-garden

homeguides.sfgate.com/grow-blue-concord-grapes-43292.html

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