Proven Winners 4.5 in. Qt. Cityline Rio Bigleaf Hydrangea (Macrophylla) Live Shrub, Blue, Pink and Purple Flowers

Cityline Rio Bigleaf Hydrangea from Proven Winners is a small, early blooming hydrangea with flowers that change in color depending on soil acidity. Lower pH induces bluer flowers, while a higher pH induces pinker flowers. Add aluminum sulfate to encourage bluer flowers. Cityline Rio is also mildew resistant and makes for a great container plant.