Acanthus 'Morning Candle' is very free-flowering with extra tall and stately spires of mauve bracts and white flowers up to four feet tall.
Achillea ageratifolia is an unusual yarrow forming aromatic, silver-green, mounds covered in pure white daisies with light yellow centres.
Actinidia 'Flowercloud Male' is an early blooming male cultivar that produces a profusion of flowers. It is an excellent pollinator to increase fruit production on 'Issai'.
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.
Agapanthus 'Purple Cloud' is one of the darkest lily-of-the-Nile with rich, purple-blue, tubular flowers.
Agastache 'Tango' is a dwarf cultivar with big flower power in firey orange for containers or the front of the border.
Agave utahensis ssp. eborispina is a dramatic, super hardy, small agave with the longest terminal spines of the subspecies up to 4 inches long!
Agave utahensis ssp. kaibabensis is the largest and most cold hardy subspecies of the Utah century plant tolerating zone 5 winters.
Albuca 'Frizzle Sizzle' is a zany zone 8 bulb with some of the most surprising foliage in the botanical world.
Alcea rosea 'Halo Cerise' has glowing pink to magenta flowers with deep royal purple centres.
Alcea rosea 'Halo Lavender' has unique lavender-purple flowers with a glowing pink ring surrounding a yellow centre.
Allium 'His Excellency' grows to 3-4 feet tall with large, 5-6 inch, violet-purple spheres.
Allium 'Spider' has the hugest flower heads like giant fireworks in the garden!
Allium 'Statos' (syn. 'Stratos') grows to 3-5 feet tall with large spheres of tiny, star-like, warm purple flowers.
Allium caesium is a rare ornamental onion with large 4 inch wide, sky blue to milky royal blue spheres held on stems to about two feet tall.
Allium schoenoprasum 'Curly Mauve' offers a more ornamental take on the garden chive with curly, blue-grey leaves and silver-pink flowers.
Allium 'Pink Planet' has bluish-green, twisting foliage and dense balls of silver-pink flowers in late summer.
Allium tanguticum 'Summer Beauty' blooms in mid to late summer with numerous spheres of lavender-pink flowers popular with pollinators.
Alstroemeria 'Indian Summer' has flowers in orange, red, and yellow with luscious bronze-infused foliage.
Alstroemeria Inca Bandit has masses of tropical looking, bright red blooms from early summer to fall.
Alstroemeria Inca Husky has masses of tropical looking flowers in sunset shades of apricot, yellow and deep pink from early summer until fall.
Alstroemeria Inca Lolly has luscious hot reddish pink flowers that last all spring and summer.
Alstroemeria Inca Lucky has magenta buds that open to clear white with salmon pink throats that last all spring and summer.
Alstroemeria Inca Sundance is a dreamy, tropical-looking flower in sunshine yellow with hints of pink.
Amarcrinum 'Howardii' has pink amaryllis-like flowers for the late summer garden. Exotic, fragrant and gorgeous.
Amianthium muscitoxicum is a rare eastern North American native with spikes of pure white, glistening, star-like flowers that turn green and bronze.
Spectacular and elegant, Anemone 'Dreaming Swan' has large, semi-double flowers with lilac blue reverses from late June through October.
Anemone 'Lucky Charm' has bright pink flowers with a pale halo of white and young foliage in purple shades.
Anemone 'Red Riding Hood' is a vigorous, clumping selection with thickly-petaled flowers in deep, rosy, magenta-pink.