Grow More Hydrangea Blueing

Grow More Hydrangea Blueing

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This aluminum sulfate Blueing Formula helps form acidic oil conditions for Hydrangeas and other acid-loving plants. When used as directed, it can encourage bluer blooms on Hydrangea macrophylla cultivars that can shift from pink to purple to blue. (Unfortunately, it won't affect white-blooming or sun hydrangeas!)

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