Hydrangea Flowers Turning Green. Sometimes they may continue blooming green for a second season too before they revert back to their normal colors. You can change the color of some varieties of hydrangea by adding aluminum sulfate to make the flowers more blue or by adding dolomite to make them pink.
Sometimes the blooms stay white a bit longer. I only have one potted Mathilda gutges plant in my condo. 12062008 Ask the Expert.
06112020 Flowers turning green is natural to this beauty whose blooms begin and end in white but are bred to be green in between those times.
All hydrangea blooms turn different colors as they age. 24042019 The green that you see in your hydrangea blooms are not part of the flowers directly but rather part of the sepals. 06112020 Flowers turning green is natural to this beauty whose blooms begin and end in white but are bred to be green in between those times. 03092020 Test your soil.