Hydrangeas grow all over the world. Except for white ones which have no pigment, hydrangea flower color changes based on the pH in the soil. A pH of 5.5 or lower will sprout blue hydrangeas, a pH of 6.5 or higher will produce pink hydrangeas, and soil in between 5.5 and 6.5 will have purple hydrangeas.
When I was a girl and walked to school, I’d pass by a pretty house whose owner pruned a row of seven bushes into trees. Each tree owned a color. Petals changed from pastel pink to fuschia to violet to lilac. That she or he altered the pH in the soil to produce the different flower colors impressed me. As I walked by, I played a game that I was a butterfly and hopped from cluster to cluster swimming in the colors. Whenever I see hydrangeas, I’m reminded of the game. There are no hydrangeas in my part of Arizona. When I travel and come across them, their absolute beauty takes my breath away, and I feel like swimming.