Genus Deutzia Species gracilis Cultivar 'Duncan' Chardonnay PearlsÂ® Common Name Chardonnay PearlsÂ® Deutzia Patent ID pp# 16098 Height 3 to 4 Feet Spread 3 to 4 Feet Habit Compact, rounded habit. Moderate growth rate. Zone 5 to 8 Culture Full sun to partial shade. Flower Pure white, pearl-like buds open to fragrant white flowers in May-June. Flower Color White. Foliage Lime yellow, resistant to burn. Deciduous. Categories: Deciduous Shrub Proven Winners® Color Choice Description Attractive, crisp lime-yellow foliage. Pure white, pearl-like buds explode into a shower of fragrant flowers in the spring.