Blue Angel™ Rose of Sharon

Blue Angel™ is a Rose of Sharon selection sold under the name ‘Greba’. It bears large, single blue flowers through summer and fall on a compact, upright shrub suited to a sunny border or specimen planting. ## Features The [Garden Debut profile](https://www.gardendebut.com/plant/Blue-Angel-Althea) identifies the cultivar as Hibiscus syriacus ‘Greba’ and gives a mature size of 6–8 feet tall by 5 feet wide. The breeder lists USDA Zone 5, full sun, and tolerance of varied soil and moisture conditions. ## Growing Plant in well-drained soil and give the shrub open sun for flowering. Water new plantings regularly while roots establish, then water deeply when the surface soil dries; a mulch layer helps conserve moisture. The compact, upright habit makes it useful as a flowering accent or in a grouped shrub border. ## Maintenance Feed in spring according to the product label. Prune in late winter or early spring to maintain shape, recognizing that flowers form on new growth. Watch for aphids, spider mites, and scale, and use an appropriate treatment only when needed.