40-42" tall x 18" wide. 'Rubinstern' (Ruby Star) is an exciting, improved variety of 'Magnus' developed by Jelitto Perennial Seeds of Germany. This breeding effort has resulted in more uniformly sized plants with large, more darkly colored flowers. The intense carmine-red petals are held horizontally from the center cone giving 'Rubinstern' a very beautiful and distinctive look. (seed propagated)