My 2 hydrengas have not bloomed in the last 2 years any reason

I need to follow your question/ replies as I have a similar problem.

I have two hydrangeas side by side. The newer plant (4 yrs old) white hybrid variety blooms profusely. The older plant 7 years old was a transplanted traditional variety from a local gardener bloomed the first two year but has been just leafy since. Same area -same sun watering.....

Have you been pruning them? You might be cutting of the baby buds. Unless you have "Endless Summer" Hydrangeas, you need to figure out if they bloom on old wood or new wood. If they bloom on old wood, the buds are set as soon as they bloom for next year so you have to be careful about pruning them. If they bloom on new wood and you're pruning them in the early summer, you are also cutting off the baby buds. You prune both types as soon as the flowers stop blooming, but watch where you cut. You should be able to baby bumps on the stalks which are next year's flowers. This article might help. Wishing you the best.

Maybe you have pruned it? They should be pruned only after blooming. In the south by the end of August. Later and you are removing next years blooms. Or, maybe it doesn’t like where it is and should be moved to a different location. Try an east location where it would get the morning sun. Good luck

Some hydrangea bloom on old wood (like azealeas) and some bloom on new wood.

Don‘t prune. Once it blooms then you can prune immediately afterward.

The plant also likes acidity. Try using Hollytone made by Espoma. It is an organic product made from chicken manure. It can also be used on holly, azealeas, blueberries, and what everelse the label indicates.