8 Year Old Grapevine Bought at Hampton Court Flower Show . . . .
Very healthy looking, prolific growth but not a single sign of a grape - ever! Any suggestions please to produce fruit?
Certified GKH Gardening Expert
It likely has too much nitrogen or too little phosphorous. This makes for a lush looking plant with little to no fruit or flowers. This is a common problem for plants planted near lawns that get fertilized. The high nitrogen fertilizer for the lawn runs off onto the roots of the plant, causing an imbalance.
Try giving it some bone meal. This will increase the phosphorous and help balance out the nutrients.