Shade hydrangeas prefer moist soil and regular watering during the growing season. For most, in order to obtain the blue flower color, apply 2 tablespoons of aluminum sulfate near the base of the plant. A rusty nail or coffee grounds will also increase the acidity of the soil which makes the flowers turn blue.
Let's Dance™ Cancan Hydrangea
Hydrangea macrophylla 'SMHMTAU' USPP 27,035
For a lace-cap hydrangea, the blooms look remarkably full, making the Cancan quite a can-do in the flower department. Depending on your soil pH, the blooms can be pink or a lavender-blue, so plan ahead for planting in your garden bed’s soil, or have some fun amending the soil to watch the colors change each season. Growing into a compact size of 4 feet by 3 feet wide, this rebloomer in the Let’s Dance series is one of Proven Winners’ quickest rebloomers yet and blooms on both new and old growth.