FLOWERS / HIBISCUS Rose of Sharon, Bluebird. Hardy deciduous shrub. Quickly grows lots 10 to 15 feet and produces many 3.5" blossoms in late summer. Flowers are purple/blue with maroon eye. Very nice. $4 Add To Basket Listed In: 2020, 2021, 2023, 2025 Ohio USDA Hardiness: 5 View Profile & Listings