Q.Grape Vine Pink Iona
I have planted Pink Iona 4 years ago. It does not bring any fruit. It start like it will be some fruit but it does not bring it. What is reason for this?

Certified GKH Gardening Expert
Grapevines are generally tough but can be plagued with pests and diseases. Pink Iona is a European variety (Vitus vinifera). These articles should help:
https://www.gardeningknowhow.com/edible/fruits/grapes/treating-grapevine-problems.htm
https://www.gardeningknowhow.com/edible/fruits/grapes/tips-for-irrigating-grapes.htm
https://www.gardeningknowhow.com/edible/fruits/grapes/drought-tolerant-grapes.htm
https://www.gardeningknowhow.com/edible/fruits/grapes/grape-root-aphid-treatment.htm
https://www.gardeningknowhow.com/edible/fruits/grapes/how-to-fertilize-grapes.htm
https://www.gardeningknowhow.com/edible/fruits/grapes/prune-grape-vine.htm