Actinidia kolomikta 'Frost' produces good, early crops of medium to large, bright green, very sweet fruit high in vitamin C.

Actinidia kolomikta 'Hero' was discovered in the Russian Far East and produces abundant crops of large, light green, very sweet fruit.

Actinidia 'Pasha' is a colourful ornamental kiwi with leaves splashed with soft pink and cream.

Actinidia 'September Sun' has spring leaves emerging purple and green then developing dramatic splashes of soft pink and cream.

Actinidia 'Viktor' is a choice variety of Arctic kiwi that bears sweet and tasty fruits up to two times larger than other varieties.

Actinidia polygama 'Hot Pepper' has orange-yellow fruit with a sweet and spicy flavour with green and silver foliage.

Actinidia polygama 'Pavel' is a good pollinator for females. It has fragrant flowers and silvery-white foliage.

Actinidia polygama 'Vera's Pride' is a good pollinator for females with fragrant flowers and silvery-white foliage.

Andromischus clavifolius 'Indian Clubs' forms clusters of pointed, cylindrical, light green to yellowish green, red-mottled, succulent leaves on narrow stems.

Andromischus cooperi var. festivus has plump, nearly cylindrical, succulent, grey leaves with purple blotches and lobed tips.

Andromischus marianiae Antidorcatum Group forms clusters of long, cylindrical, light green, pointed, succulent leaves with bold red spots.

Andromischus marianiae 'Herrei' is one crazy succulent with pointed, cylindrical, purple-red leaves completely covered in bumpy, warty projections.

Bottlebrush buckeye, Aesculus parviflora, is topped with dramatic summer spires up to 12 inches high of tubular white flowers.

Agapanthus 'Galaxy White' has five inch wide umbels of white, trumpet-shaped blossoms on tall stems. Hardy to zone 6!

Agapanthus 'Polar Ice' is a cold hardy lily-of-the-Nile with pure white flowers.

Agastache rugosa ‘Alabaster’ is a hummingbird mint with fragrant, creamy-white flowers and aromatic edible leaves.

Agastache Sunrise White is a long-blooming hummingbird mint offering a beautiful display of tubular flowers that are golden yellow in bud opening to white with a hint of pink.

Agave utahensis ssp. kaibabensis is the largest and most cold hardy subspecies of the Utah century plant tolerating zone 5 winters.

Akebia 'Shiro Bana' is a decorative, twining climber with attractive leaves and chocolate-scented, white flowers.

Albuca bracteata (syn. Ornithogalum caudatum), pregnant or sea onion, looks like an onion with thick, bright green leaves.

Alcea rosea 'Halo Blush' has unique pure white petals with a deep magenta ring around the middle of a greenish centre.

Alcea rosea Spotlight 'Polarstar' is a hollyhock with large, old-fashioned, single white flowers with bright yellow eyes.

Allium ampeloprasum, or elephant garlic, produces much larger heads than regular garlic that are milder in flavour.

Allium amplectens 'Graceful Beauty' has pure white flowers with purple anthers forming heads about 3 inches across.