Hydrangeas, also known as hortensias, are more than just beautiful garden flowers. These remarkable plants have a hidden talent – they act as natural pH indicators. If you've ever observed a hydrangea bush closely, you might have noticed something intriguing. The color of their flowers can change dramatically based on the acidity or alkalinity of the soil they grow … [Read more...] about Did You Know? Hydrangeas: Nature’s pH Indicators