Limelight Hydrangea Blooms. Panicle hydrangeas bloom in early summer, starting out white, then transitioning to pink and purplish pink in early fall. The species is a coarse, open shrub with an unkempt appearance, but selections like ‘Limelight’ have great form, especially in containers.

What does it mean if my hydrangeas are pink?

If your soil is more alkaline, then your hydrangeas will be pink or pinker. … If your soil is more acidic, pH around or less than 5.5, then your blue hydrangeas stay blue or bluer. If you know your soil is more on the alkaline side, you want to apply the garden sulfur or soil acidifier upon planting blue hydrangeas.

How do I keep hydrangeas pink?

The only way to do this is to add garden lime to soil to help raise the pH. Sprinkle 1/2 cup of garden lime per 10 square feet. Again, you will have to add the lime every 3 to 4 weeks throughout the growing season to keep the blooms pink.