I love the coordinating schedules of our hydrangeas. Sweet synchronicity from both sides of the garden. Our potted hydrangea has a soft, pink bloom, while the three sisters are showing a light dusting of blue.
The blue hydrangeas hang out under a pine tree, so will likely keep their hue. I’ve read that you can change a pink hydrangea to blue and vice versa, but the white ones will always be white.
Here is what the Gardener’s Supply Company* has to say about changing the color of the bloom.
“Hydrangeas with bloom colors that range from pink through blue and purple usually belong to the hydrangea cultivars known as mopheads and lacecaps. These types of hydrangeas have the interesting ability to change the color of their blooms based on the chemistry of the soil. When grown in alkaline soil, the bloom colors are pinker. When grown in acidic soil, the bloom colors are bluer.
Because it’s the soil chemistry that determines the bloom color, the variety names given to these types of hydrangeas means very little when it comes to bloom color. For instance, Nikko Blue, Pretty in Pink, Forever Pink and Blue Deckle, all have an almost equal chance of blooming pink or blue, depending on the soil they are planted in.
To manipulate the color of a hydrangea’s blooms, you need to manipulate your soil’s pH level and mineral content. This is not something you do just once. In order to maintain growing conditions that result in a specific bloom color, you may need to apply special soil amendments several times during the growing season.”
Too much work for this gardener! I’m just happy they’re blooming.
*One of my favorite catalogs!