I have 4 year old grapes that have beautiful vines and leaves, but do not bloom and have grapes. What can I do to get grapes?
Certified GKH Gardening Expert
There is probably a nutrient imbalance in the soil - likely too much nitrogen, which produces lush growth, and too little phosphorus, which is responsible for flowering and fruiting. I would recommend adding some phosphorus rich fertilizer or bone meal to the soil. Here is more information: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/phosphorus-plant-growth.htm