I bought a lacecap hydrangea that was labeled blue in color. Trouble is that when it bloomed it was white! Can a white lacecap be turned blue with aluminum or sulphur? Thanks.
Certified GKH Gardening Expert
White Hydrangea cannot be changed to pink or blue by the grower.
A White will sometimes add some tinges of pink as the plant ages.
It is not unusual for a plant to be miss labeled in the greenhouse.