Smooth Hydrangea (Bareroot)

Smooth hydrangea is a versatile native flowering shrub for woodland gardens, rain gardens, pollinator plantings, and naturalized landscapes. Offered as bareroot stock for late fall and early spring dormant planting, it can be a cost-effective option for larger plantings when planted correctly and given consistent watering during establishment.

Hydrangea arborescens is native to the eastern United States, where it occurs naturally on moist or rocky wooded slopes, ravines, streambanks, and woodland edges. Valued for its adaptability and reliable flowering, smooth hydrangea is among the most cold-hardy hydrangea species and performs well across a broad range of climates. Unlike some hydrangeas, it blooms on new wood, producing flowers on the current season’s growth even after winter dieback or spring pruning. The straight species is noted for its lacecap flowers and its tendency to stand upright rather than flop. It is considered juglone-tolerant, so can be planted in the vicinity of walnut trees.

Smooth hydrangea forms a rounded, deciduous shrub with medium-green foliage and large clusters of white flowers that appear from early to mid-summer. Plants typically grow 3–5 ft tall and 3–5 ft wide. The species performs best in partial shade and moist, well-drained soils but tolerates full sun when provided with consistent moisture. It is hardy in zones 3–9 and adapts to clay, loam, and sandy soils with neutral to acidic pH.

Its flowers attract a variety of pollinators, and it serves as a host plant for the hydrangea sphinx moth. Smooth hydrangea is also useful for naturalized areas and slopes where a durable native shrub is desired. Bareroot stock is offered for late fall and early spring dormant planting.