Q.Grapes Fail To Hold Blooms
Every year my grape plants will vine and produce blooms.. The blooms will fall off after about a week or two. The vines will then again produce booms, and they will fall off eventually after a few weeks. this happens several times every summer.. Is it a soil deficiency or something else that cause’s this. If I cant figure this out after this season, I’m tempted to just remove the grape plants annd chalk it up to bad experience.

Certified GKH Gardening Expert
This could be due to a few things. The first you want to address would be climate zone. Most grapes will have trouble in zone 9 unless you, specifically, have a variety that is meant for your area.
The second thing to consider will be the sex of the plants. Grapes have separate male and female plants,usually, with some being both. With this being said, it could be that there are no females, or no males present to pollinate females. It could be that you have all males, and couldn't get fruit, as well. In the case of a plant with both parts- it could be lack of pollination, or the need for a second plant because of self-incompatibility.
Unfortunately, there are other factors that could cause this, as well. This will be trial and error until it is solved.
https://www.gardeningknowhow.com/edible/fruits/grapes/how-to-get-grapes-on-vines.htm