Hydrangeas: True Blue or Tickled Pink?
There are very few plants that you, the gardener, can actually choose the color you want them to be in your garden. Hydrangeas happen to be one of them. With some simple amendments to your soil, you can choose between making the blooms blue or pink. And while it doesn’t happen overnight, the magical blooms are well worth the wait! The most important thing that influences the color of hydrangeas is soil pH—that’s the level of soil acidity. That means you may want to start with a soil test. You can either get a soil test kit from your favorite garden center or you can send your soil to your local cooperative extension office. In general, more acidity makes hydrangeas turn blue, less acidity (or more alkaline soil) promotes pink—that is, unless we’re talking about white hydrangeas, which alas, are limited to white. Take a look at our pH color guide to get closer to the color you prefer.