Q.Hydrangea Blue 10 Yrs Old
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.

Nikki
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on June 20, 2011
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
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