Mr. Mustard has incredibly colorful springtime foliage of yellow, orange, red, pink, and lime green. Summer foliage changes to vibrant Kelly green providing the perfect background for the showy creamy-white, large, astilbe-like blooms that attract butterflies and pollinators. With a suckering habit, this low-growing selection grows with a naturalized look, and with some annual pruning, it will keep its mounded habit.