Hydrangea macrophylla is a perennial shrub that has the unique ability to re-bloom throughout the spring and summer months.
- One of the best flowering plants
- The flower color varies depending on soil pH.
- Rosy-pink is alkaline soils, the flowers turn rich blue in acidic soils.
- Bears elegent large clusters of star-shaped flowers
Hydrangea macrophylla is a species of flowering plant in the family Hydrangeaceae, native to Japan. It is a deciduous shrub growing to 2 meters tall by 2.5 meters broad with large heads of pink or blue flowers in summer and autumn.
Hydrangea macrophylla blooms can be blue, red, pink, light purple, or dark purple. The color is affected by soil pH. An acidic soil (pH below 7) will usually produce flower color closer to blue, whereas an alkaline soil (pH above 7) will produce flowers more pink. This is caused by a color change of the flower pigments in the presence of aluminum ions which can be taken up into hyperaccumulating plants.