Hydrangea Blue 10 Yrs Old

Question

For past 2 years my hydrangea has white sticky dots on its lower stems. Last year only 3 very large flowers. This year all hydrangea bloomed with beautiful flowers, but it still has the white sticky dots.

Answer 1

It sounds like aphids. I would recommend treating the plant with neem oil. These articles will help:
https://www.gardeningknowhow.com/plant-problems/pests/homemade-aphid-control-a-natural-way-to-kill-aphids.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm