Invincibelle® Ruby Smooth Hydrangea. This is the first red flowering Smooth Hydrangea, with dark, burgundy red flower buds of Invincebelle® Ruby open to a two-toned combination of bright ruby red and silvery pink. The foliage is extra dark and the stems are strong insuring outstanding performance in the containers as well as in the garden. It is a strong rebloomer and can be cycle-pruned which will deliver multiple replacement flower heads. This is a native species.