Like magic, some hydrangeas can change colors.
Certainhydrangea varietiescan shift colors, changing between blue, purple, and pink shades.
Choose the Right Hydrangea
Hydrangea flowers naturally bloom in white, cream, blue, or dusty pink.
Credit: King Au
Two popular bigleaf pink hydrangea varieties with gorgeous blooms include Lets Dance Big Band and Endless Summer Summer Crush.
Know Your Soil pH
Soil pH naturally ranges from 0 to 14, with 7.0 being neutral.
Lower than 7.0 is acidic, and higher is alkaline.
A reading above 7.0 means your hydrangeas should produce pink flowers without your intervention.
Therefore, to produce pink hydrangeas, the pH of the soil needs to be high.
The best way to increase the pH of your soil is to usegarden limemade from crushed dolomitic limestone.
Avoid feeding your hydrangeas after July; doing so may stimulate tender new growth thats sensitive to frost damage.
Practice Patience
Changing the pH of garden soil takes anywhere from 3 to 18 months.
Once the first flowers of the growing season appear, they wont change color.
Consider growing your bigleaf hydrangeas in containers with a good-qualitypotting mixif the gardens soil is exceptionally acidic.
Aluminum isnt usually present in good-quality potting mix, so hydrangeas grown in the mix wont turn blue.
Amending soil with crushed eggshells is an organic method some gardeners successfully use to grow pink hydrangea.
When mixed into soil, eggshells reduce the acidity as they break down.
Higher soil pH makes aluminum absorption more difficult for plants, which helps produce pink hydrangea over time.
Coffee grounds are acidic and can help make the soil slightly more acidic.
Soft water is usually low in pH or acidic, and you want alkaline soil for pink blooms.
It might be possible to see results more quickly if you have a reblooming hydrangea.
