Q.yellow bell bush not blooming
I planted two yellow bell bushes both the same size both had flowers on them one has grown and has flowers on it the other has grown to six feet tall and no flowers they are side by side why is this?
Is one more in the sun than the other? Sun is essential for yellow bell blossoms. Is one closer to the lawn, or to another garden that's being heavily fertilized with nitrogen? Lots of nitrogen encourages leafy growth, but inhibits flowers. It's possible that one bush is getting more nitrogen runoff from neighbor plants.
This article goes over all the reasons your yellow bell bush might not be blooming: