Cardiandra alternifolia is a rare rhizomatous hydrangea relative with lacecap flowers in summer.

Carpenteria californica 'Elizabeth' offers open clusters of ruffled white flowers centred with spheres of yellow stamens.

Decumaria barbara is an unusual eastern North American hydrangea relative known as woodvamp that is great in the shade.

Deinanthe bifida is a rare hydrangea relative with beautiful foliage and cool, white flowers.

Deinanthe caerulea is a rare hydrangea relative with beautiful foliage and cool, purple-blue flowers.

Deutzia 'Yuki Cherry Blossom' is a fuzzy deutzia shrub with pink cherry-blossom-like flowers and green foliage with fall colours.

Deutzia 'Yuki Snowflake' is a fuzzy deutzia shrub with white, cherry-blossom-like flowers and green foliage with fall colours.

Dichroa febrifuga 'UBC Form' is a rare hydrangea relative with clusters of pink or blue flowers followed by long-lasting metallic, purplish berries.

Hydrangea Golden Crane is a Dan Hinkley introduction with strongly honey-scented, early-blooming hydrangea with white and gold flowers.

Hydrangea anomala ssp. petiolaris, the climbing hydrangea, has glossy green leaves and showy clusters of lacy white flowers.

Invincibelle Wee White is a dwarf 'Annabelle' type Hydrangea to just 30x30" with pure white flowers on upright stems.

Hydrangea arborescens 'Annabelle' is the classic white mophead. It has large white heads of pure white florets that age to green with time.

Hydrangea arborescens 'Annabelle' is the classic white mophead. It has large white heads of pure white florets that age to green with time.

Hydrangea arborescens 'Haas Halo' has huge 14 inch wide lace cap blooms and leathery, blue-green foliage.

Hydrangea Incrediball is an update on the classic 'Annabelle' with extra huge flower heads on strong stems.

Hydrangea Incrediball Blush has huge heads of silver-pink flowers that deepen to deep pink and then turn to chartreuse.

Hydrangea Invincibelle Garnetta is a dwarf cultivar to just 3x3 feet with rich lavender-pink, reblooming flowers.

Invincibelle Wee White is a dwarf 'Annabelle' type Hydrangea to just 30x30" with pure white flowers on upright stems.

Hydrangea Invincibelle Mini Mauvette is a dwarf cultivar to just 3x3 feet with rich lavender-pink flowers.

Hydrangea Invincibelle Ruby is a dwarf cultivar with deep reddish pink buds opening to two-tone pink flowers.

Hydrangea arborescens 'Invincibelle Sublime' has big, fluffy mopheads on strong stems that bloom a stunning green!

Hydrangea arborescens 'Invincibelle Sublime' has big, fluffy mopheads on strong stems that bloom a stunning green!

Invincibelle Wee White is a dwarf 'Annabelle' type Hydrangea with pure white flowers on upright stems.

Hydrangea arborescens Pinkerella is an eye-catcher with its lovely pink flowers atop strong stems.

Hydrangea arborescens Seaside Serenade Bar Harbor is a compact cultivar 4 feet tall and wide with large white and green mopheads.