It grows to 10 to 15 feet in height and has a wide-spreading (15 feet) habit. Use this versatile shrub as a specimen or in the home landscape shrub border. This very outstanding shrub flowers in August when few other shrubs are in bloom. White petals with reddish-pink anthers and stamens are borne in panicles that are 2 to 3 feet long. Smooth brown nuts in husks ripen in late fall. Bottlebrush buckeye is a beautiful, mounding, shrubby species of buckeye with spectacular flowers in mid-summer.