Walter's Viburnum 'Whorled Class'
(Viburnum obovatum 'Whorled Class')
Walter’s Viburnum is a Florida native evergreen shrub or small tree that can grow to a height of 25 feet. However, there are many cultivars available in the nursery trade with various forms such as upright, weeping, and dwarf. ‘Whorled Class’ is a rounded, compact cultivar perfect for use as a small hedge, foundation planting, or accent plant around trees. Small white clusters of flowers bloom most heavily in spring, but the whorled leaf arrangement is what gives this cultivar its name, having 3 leaves growing per node along the stems.
Mature Size: 5 feet tall and wide
Growth Rate: Moderate
Plant Habit: Rounded
Ornamental Characteristics & Uses:
Foliage Color: Medium Green
Flower Color: White
Bloom Time: Spring
Attracts Wildlife: Fruit attracts birds
Uses: Foundation Planting, Hedges, Accent, Topiary
Cold Hardiness Zone(s): 7 – 11
Exposure: Full Sun – Partial Shade
Water Needs: Low
Soil Tolerances: Drought Tolerant Once Established; Tolerates Occasionally Wet Soils; Tolerates Sand or Clay Soils
Soil pH: Acidic to Alkaline
General Care & Growing Tips:
Water plants regularly during establishment. Like most plants, a 2- to 3-inch layer of organic mulch is beneficial to retain soil moisture. Heavily shaded plants tend to grow less compact with sparse flowering. Apply a balanced, slow-release fertilizer 4 to 6 weeks after planting. Prune to shape after flowering.
No pests or diseases are of major concern. Watch for aphids on new growth.
Reference: Gilman, E. F., (1999). Viburnum obovatum Walter Viburnum, Blackhaw. University of Florida. http://edis.ifas.ufl.edu/fp604
Photos by Alicia Lamborn
- UF/IFAS Sites
- Demonstration Gardens of the University of Florida's Extension Service
- Ornamental Teaching Gardens: Design, Development and Use
- Types of Gardens
- Lawn and Garden Landscape Design
- Florida-Friendly Landscaping Program
- Florida Yards.org