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Is it time to change the color of my hydrangea?

What time of the year is the best time to add acid solider to my established pink/mulberry colored hydrangeas? I am really really wanting blue blooms this season! It is currently January should I start adding the acid solider now? How much how often?

OSU Extension Service

Meet Our Flowers, Shrubs, and Trees Experts

Brooke Edmunds

Jay Pscheidt

Have a Question? Ask an Expert!

Is it time to change the color of my hydrangea?