nakanj
Full Member
Posts: 58
Joined: Tue Oct 05, 2010 9:42 pm
Location: pikeville, ky.

whats wrong with my hydrangea

I have two Hydrangeas about 3 ft, tall. This winter they had aphids bad and I used insecticidal oil to kill them Now they won't bloom. They are both healthy looking with nice green leaves but no blooms. Did the oil hurt them someway that I can't see? :shock:
give me a sunny day and a flower bed and I'm happy

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hendi_alex
Super Green Thumb
Posts: 3567
Joined: Sun Jul 06, 2008 11:58 am
Location: Central Sand Hills South Carolina

Some hydrangeas bloom on new growth and others bloom on last season's growth. If the hydrangeas which bloom on last season's growth die back because of a particularly cold winter, then they will not bloom the next year. I have two of those hydrangeas and neither is blooming this year after this past winter's very cold temperatures. So depending upon your particular type of hydrangeas, winter kill of last season's growth could be the culprit.
Eclectic gardening style, drawing from 45 years of interest and experience. Mostly plant in raised beds and containers primarily using intensive gardening techniques.
Alex

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