Why Isn’t My Thompson Seedless Vine Getting Flowers?

Question

This is a 5 year old vine that has been in a permanent location for 3 years. We got one bunch of grapes last year that was really tiny. We pruned it last year and left nice strong canes and we were hoping to get lots of bunch’s this year but we only have one bloom again. Any suggestions would be really helpful because I’m almost ready to give up on this vine.

Answer 1

It does take at least three years before they start fruiting. Take a look at how your vine is trained, pruned, fertilized, and pollinated. Even though Thompson seedless is self pollinating, it will produce better if you have a second vine. These articles should help:

https://www.gardeningknowhow.com/edible/fruits/grapes/how-to-get-grapes-on-vines.htm
https://extension.arizona.edu/sites/extension.arizona.edu/files/pubs/az1657-2015.pdf