Boule de Neige Rhododendron (Rhododendron ‘Boule de Neige’) Boule de Neige Rhododendron (Rhododendron ‘Boule de Neige’), also known as Snowball Rhododendron, is a compact, cold-hardy evergreen valued for its pristine white blooms and dense, rounded form. This heirloom cultivar has been a garden favorite since the 19th century, offering reliable performance and year-round interest in a range of climates. Distinctive Features Reaching 4 to 5 feet tall and wide, Boule de Neige forms a neat, mounded silhouette with dark green, leathery foliage. In mid to late spring, it produces rounded trusses of white flowers with subtle yellow or green markings at the throat. The blooms contrast beautifully against the deep evergreen leaves, creating a refined and timeless look suitable for both traditional and modern gardens. Growing Conditions Sun Exposure: Partial shade; tolerates more sun in cool regions Soil Type: Moist, well-drained, humus-rich soil Soil pH: Acidic Water Needs: Moderate; regular watering preferred USDA Hardiness Zones: 5 to 8 Ideal Uses Focal point in shaded foundation beds or entry gardens Accent plant in woodland or native-inspired landscapes Massed in borders for seasonal bloom and evergreen texture Mixed planting with other rhododendrons and acid-loving shrubs Low hedge or privacy screen with year-round form Low Maintenance Care Mulch annually to maintain moisture and soil acidity Prune lightly after flowering to remove spent trusses Water during dry spells to prevent root stress Feed in early spring with a rhododendron-specific fertilizer Protect from drying winter winds in exposed locations Why Choose Boule de Neige Rhododendron Pure white blooms brighten shaded spring landscapes Compact form fits well in formal and informal designs Cold-hardy and adaptable to a variety of garden settings Timeless choice with a long history of performance An elegant focal point for foundation or woodland gardens Boule de Neige Rhododendron combines old-world charm with modern reliability, delivering crisp white flowers and evergreen presence that make it a refined focal point in shaded or partially shaded garden settings.