i just learned that the color of hydrangea flowers depends on the acidity of the soil they grow in. acidic soils make for blue flowers, and alkaline soils create pink. there is so little actual blue in nature, that it has me wondering if there is some connection between hydrangeas and blueberries, which both blossom into blue around midsummer in acid soil.

lacecap hydrangea blossoms in december

minneapolis, minnesota