Posted by icebear on May 17, 19100 at 11:47:09:
In Reply to: Hydrangea color change??? posted by Andy Terrell on May 16, 19100 at 11:16:52:
: I have added aluminum sulfate to my white hydrangea hoping to turn it a blue of purple color. It has begun to bloom, but they appear to still be white. Is it too late to change them by adding more or what?? Thanks for any input Andy
White Hydrangeas stay white. Only the pink or blue ones can be affected by ph changes.