Frank, lack of flowering it usually caused by lack of sun or too much fertilizer. Better to have watered it deeply twice a week. I have a red Knockout that produced few blooms this year It too was in full sun all day. The heat and drought were just too much for it. Best Nancy.
Rose Bush Did Not Flower
Question From: F. Owen - WISCONSIN
Q: My white rose bush never flowered this year. It is out in bright sun all day. It was watered every other day.