non blooming hydrangea
I have two hydrangea bushes. The blue one is healthy and huge. I know it is the variety that grows on old wood. My pink one is much smaller and although it has wonderful green leaves, it doesn't bloom. They are planted on the ese so sun should not be a problem. I put coffee grounds under the blue one and it produces very blue flowers. What can I do about the pink one?
You can try putting some dolomitic lime, and a fertilizer heavy in phosphorus and potassium down. These will help promote blooming. There is the probability that the smaller one is a big leaf hydrangea. If this is the case, then you may see blooms, or you may never see them again. It will be completely up to the plant! This is common, and hard to avoid.
Here is an article with more information on caring for hydrangeas: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/growing-hydrangeas-hydrangea-care-guide.htm