This is one of my favorite flowers. This hydrangea pink color comes from the alkaline soil here in my front yard. Total Pink or at least. 90% needs to be all one colorhttps://wordpress.com/read/blogs/59080076/posts/48984
What determines the color of a hydrangea?
macrophylla depends on soil pH. Red or pink blooms result from neutral or basic soil (pH 7 and above), whereas blue blooms indicate acidic conditions (pH less than 7). However, the underlying mechanism of the color shift turns out to be aluminum ions (Al3+), which are only mobile and available under acidic conditions.