Winterthur Viburnum (Viburnum nudum ‘Winterthur’) Winterthur Viburnum (Viburnum nudum ‘Winterthur’) is a refined, compact native shrub that offers striking seasonal transitions and multi-functional beauty, making it a strong choice as a focal point in formal or naturalized gardens. Distinctive Features This selection reaches 5 to 6 feet tall and wide with a rounded, upright form. Its creamy white flower clusters emerge in late spring, followed by berry clusters that turn from green to pink to deep blue. The glossy, dark green foliage transforms into a rich burgundy-purple in fall, and the fruit display often overlaps with the changing leaves for a dramatic effect. Growing Conditions Sun Exposure: Full sun to partial shade Soil Type: Moist, acidic, well-drained soils Soil pH: Acidic to neutral Water Needs: Moderate to high USDA Hardiness Zones: 5 to 9 Ideal Uses Naturalistic and native plant gardens Shrub borders and foundation plantings Massed in wetland edges or rain gardens Pollinator and wildlife gardens Seasonal focal point with fall and berry color Low Maintenance Care Minimal pruning needed, ideally after flowering Maintain soil moisture with mulch and consistent watering Fertilize annually with a balanced, slow-release fertilizer Plant with a compatible pollinator such as Brandywine Viburnum for optimal fruit set Monitor for leaf spot or mildew in humid areas Why Choose Winterthur Viburnum Graceful habit with excellent berry and foliage color Compact size ideal for modern landscapes Native species that supports local wildlife Adaptable to moist soils and wet conditions An elegant and reliable focal point in mixed borders Winterthur Viburnum delivers texture, color, and habitat value in a well-behaved form that enhances both natural and cultivated spaces with minimal effort.