Hydrangeas can be either deciduous or evergreen shrubs, as well as self-clinging vines. Their flowers are typically arranged in clusters that include both smaller, fertile blooms and larger, more ornamental sterile ones. Many varieties also offer notable autumn foliage.

Hydrangea aspera subsp. aspera

Hydrangea aspera subsp. discolor is a deciduous shrub that can reach heights of approximately 3 meters. It features serrated green leaves, notable for their greyish undersides. From late spring to early summer, this plant produces large, flat clusters of sterile white flowers.

Hydrangea aspera subsp. discolor

Hydrangea aspera subsp. robusta is a tall, upright shrub that can reach heights of up to 6 meters. It features lanceolate leaves, measuring as long as 29 centimeters, that are covered in fine hairs and have red petioles. In late summer, this plant produces broad inflorescences consisting of blue-purple fertile flowers surrounded by prominent white sterile flowers.

Hydrangea aspera subsp. robusta

Hydrangea aspera subsp. sargentiana is a medium-sized, upright deciduous shrub characterized by its open growth form. It features distinctive peeling bark and broad, velvety ovate leaves. The plant produces substantial, flat clusters of flowers that can appear in shades of purple or blue, each cluster framed by white ray florets.

Hydrangea aspera subsp. sargentiana

Hydrangea aspera subsp. sargentiana 'La Fosse'

This deciduous shrub typically reaches a height of approximately 2.5 meters. Its large, velvety leaves initially appear in a yellow-gold hue with bronze edges, transitioning to green during the summer months before displaying gold and copper tones in the fall. In late summer, it produces gently domed flower clusters featuring soft purple flowers at the center, surrounded by larger white sterile florets.

Hydrangea aspera subsp. sargentiana Gold Rush ('Giel')

Hydrangea aspera subsp. sargentiana large-leaved

Hydrangea aspera subsp. strigosa is a deciduous shrub that exhibits slow growth, typically reaching heights of about 3 meters. Its leaves are lanceolate to narrowly ovate in shape, featuring a distinctive texture with short, stiff hairs on their undersides. During the summer and extending into autumn, this plant produces flowerheads that consist of purple fertile flowers encircled by white sterile ray florets.

Hydrangea aspera subsp. strigosa

Hydrangea aspera subsp. strigosa 'Elegant Sound Pavilion'

Hydrangea aspera subsp. strigosa 'Gongshan'

Hydrangea aspera subsp. strigosa 'Sapa'

Hydrangea aspera subsp. strigosa from Gong Shan, China

Hydrangea aspera subsp. strigosa from northern Vietnam

Hydrangea asterolasia

Hydrangea barbara is a woody, deciduous vine that attaches itself to structures as it grows. Its foliage consists of glossy, dark green leaves, while summer brings clusters of small, fluffy white blooms.

Hydrangea barbara

Hydrangea barbara 'Vickie'

Hydrangea bifida is a perennial that forms clumps and features toothed, oval leaves, each exhibiting a distinctive split at the tip resembling a fish tail. This plant reaches a height of approximately 40 cm (16 in). During the summer months, it produces branched clusters of white flowers, reminiscent of traditional hydrangeas, which are accented by yellow stamens that emerge above the leaves.

Hydrangea bifida

Hydrangea bifida 'Pink-Kii'

Hydrangea bifida 'Pink-Shi'

Hydrangea caerulea is a deciduous herbaceous perennial, often referred to as 'False Hydrangea.' It features oval, dark green leaves that are both veined and serrated. In early summer, it produces cup-shaped flowers that start as violet blue-purple and gradually transition to white.

Hydrangea caerulea

Hydrangea caerulea 'Blue Wonder' is a clump-forming, deciduous perennial that typically reaches a height of about 50 cm. Commonly referred to as 'False Hydrangea,' it features oval-shaped, dark green leaves that are veined and serrated. In early summer, it produces downward-facing, cup-shaped flowers that range in color from violet-blue to white.

Hydrangea caerulea 'Blue Wonder'

Hydrangea caerulea 'Pale Blue'

Hydrangea caerulea pale-flowered

Hydrangea caerulea white-flowered

Hydrangea chinensis

Hydrangea chinensis 'Big White' is a deciduous shrub that can reach heights of up to 2 meters. It features broad, ovate leaves and produces lace-cap flower clusters in summer. These clusters consist of creamy fertile blooms encircled by serrated, white sterile flowers.

Hydrangea chinensis 'Big White'

Hydrangea chinensis 'Hoop'

Hydrangea chinensis f. angustipetala is a compact, deciduous shrub that typically grows up to 1.5 meters in height. It features elongated, dark green leaves reminiscent of willow foliage. In summer, it produces lace-cap flower clusters, where small, soft yellow fertile blooms are encircled by sterile florets that start white and gradually transition to cream.

Hydrangea chinensis f. angustipetala

Hydrangea chinensis f. angustipetala from Yakushima, Japan

Hydrangea chinensis f. formosana

Hydrangea chinensis f. macrosepala

Hydrangea chinensis f. macrosepala 'Golden Crane' is a medium-sized, deciduous shrub that can reach heights of up to 1.5 meters. It features serrated foliage and produces sizable lace-cap flower clusters. The fertile blooms begin as green and transition to yellow, while large, serrated white sterile flowers are interspersed throughout the display. This flowering period occurs from late May through early August.

Hydrangea chinensis f. macrosepala 'Golden Crane'

Hydrangea chinensis f. obovatifolia

Hydrangea chinensis f. umbellata

Hydrangea chinensis from Sichuan, China

Hydrangea chinensis from Taiwan

Hydrangea chinensis var. lobbii

Hydrangea chungii

Hydrangea corylifolia

Hydrangea crassa var. elliptica

Hydrangea daimingshanensis

Hydrangea davidii is a deciduous shrub that typically reaches heights of up to 1.2 meters. It features robust, serrated leaves that have a textured surface, displaying a blue hue on their undersides and along the veins. In the summer months, this plant produces terminal clusters of small blue fertile flowers, which are encircled by larger white sterile florets. The color of the fertile flowers is blue in acidic soils, changing to pink when grown in alkaline environments.

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