The day lillies and hydrangeas make a shocking and beautiful color combination. The funny thing about the hydrangeas is that you can get them to change color. They like an acidic soil - especially if you want the blue blooms. You can use any of the following to turn them blue: aluminum sulfate , egg shells, coffee grounds, or ground up orange or grapefruit peels. If you want pink blooms, use less acidic fertilizer.
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