Abelia 'Kaleidoscope' has long-lasting, fragrant flowers and variegated foliage in yellow, green, orange and red.

Acaena inermis 'Purpurea' is an excellent ground cover for crawling over gravel paths or stones with gorgeous purple-blue-grey foliage.

Acaena saccaticupula 'Blue Haze' is an excellent ground cover with powder blue foliage.

Acanthus hungaricus 'White Lips' is a dramatic bear's breeches with spikes of light plum hoods and wide, white lips.

Achillea ageratifolia is an unusual yarrow forming aromatic, silver-green, mounds covered in pure white daisies with light yellow centres.

Achillea millefolium, the common yarrow, is an important nectar source and host plant for a diversity of insects.

Achillea millefolium 'New Vintage White' has large, flat-topped flower clusters of pure white eyes flowers.

Achillea ptarmica 'Peter Cottontail' is a unique yarrow with white, button-like flowers held in low, cloud-like mounds.

Achimenes 'Blue Sparks' is an orchid pansy related to the African violet with delicate white to lavender/blue tubular blooms.

Achimenes 'Snow Princess' is an orchid pansy related to the African Violet with delicate snow white blooms and tiny purple throats.

Achlys triphylla is a unique ground cover attractive to pollinators and hummingbirds. The dried three-part leaves smell like vanilla.

Peacock gladiolus (Acidanthera murielae) is topped in summer with large, white, fragrant flowers with purple-black centres.

Aconitum 'Album' has deeply cut ferny dark green leaves with bold white spikes of hooded monkshood flowers. Elegant.

Aconitum 'Bicolor' is an elegant and gorgeous bicolour monkshood with white and blue flowers.

Aconitum 'Eleonara' has mostly white flowers with a hint of blue on the petal tips. Elegant and beguiling.

Acorus 'Minimus Aureus' forms a slowly-spreading groundcover of finely-textured, linear, golden foliage.

Actaea 'Cheju Do' is more compact and floriferous than its relatives with 12-15 spikes per plant! Great for shade gardens.

Actaea japonica 'Silver Blush' has has wands of creamy-white bottle brush flowers and serrated silver foliage maturing to green.

Actaea japonica 'Silver Dance' has wands of creamy-white bottle brush flowers and silver foliage maturing to green.

Actaea (Cimicifuga) 'White Pearl' has dissected green foliage and exceptionally long spires of fragrant white flowers in late summer.

Actaea pachypoda is a lovely and delicate woodlander and a perfect choice to create a quiet and relaxing vignette in the shade border.

Actaea pachypoda 'Misty Blue' is a white baneberry with bluish foliage and white flowers followed by white fruit with a black dot.