If you want your cut hydrangeas to last, there is a handy secret that florists use to make cut blooms drink more water. Here's why you need alum powder for hydrangeas.
How to Keep Hydrangeas Alive: 14 Steps (with Pictures) - wikiHow
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Hydrangeas For Cut Flowers (& How To Keep Them Fresh!), 44% OFF
Refresh these Trader Joe's flowers with me! These are over a week old , Trader Joe's Flowers
Alum Powder Can Help Keep Your Cut Hydrangeas Fresh For, 41% OFF
Hydrangeas For Cut Flowers (& How To Keep Them Fresh!), 44% OFF
How To Revive Your Wilted Hydrangeas
Hydrangeas for Cut Flowers (& How to Keep Them Fresh!)
12 Hydrangea Care Tips For Better Blooms
Purify water :: Alum, also known as potassium aluminum sulfate, can be used to purify water. Preserving Cut Hydrangea Blooms: Dipping cut hydrangeas
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How to Cut Hydrangeas So They Won't Wilt - In My Own Style