My 3 hydrangea brushes have not bloomed in 3 or 4 years. Suggestions?

Sprinkle electric crystals around the base and water well, safe and good for all citrus too, then fill a bucket sit back and soak ya feet and relax as well.cheers bec

MiracleGrow Blooming plant fertilizer

Miraclegrow blooming plants fertilizer

Here's an article thats helped me since I added these plants to my yard... http://www.millionplants.com/advice/wont-hydrangea-bloom/

Holly Tone worked into the soil, or MirAcid. Hydrangeas like morning sun, afternoon shade, if possible.

Your soil has probably lost essential nutrients over time. I recommend sprinkling Epson Salt on the soil at the base of your plants. Then water really good. The watering will help the roots receive the Epson Salt. You can do this once or twice a month. Hope this helps you.

Hydrangeas draw ants. Do NOT spray them with insecticide as they are necessary to eat the waxy coating off the buds so the flowers bloom. I had them for years and did nothing to care for them other than dead heading the blooms. They were constant spring bloomers!

https://thistlewoodfarms.com/how-to-make-your-hydrangeas-bloom/

https://www.gardenguides.com/84033-make-hydrangeas-bloom.html

http://www.millionplants.com/advice/wont-hydrangea-bloom/

https://www.thisoldhouse.com/ideas/5-tips-growing-gorgeous-hydrangeas