It depends on where you are going to plant her. Rozanne grows from a central crown then sprawls. If she is planted in a sunny open area with room to spread she will form a large mound about 12-15 inches tall. If she is planted close to other plants she may weave her way through them, as she has done with my rose bush, or grow more upright with the support of plants around her, as she has done with my boxwood. She will grow into a dense mound in the sun, and will be more spindly in the shade. Regardless, you will be rewarded with blooms from June to Frost.