Abutilon

Chinese Bellflower This shrub is prized for its showy bell-shaped flowers. Flowers from Srping to Fall, nearly everblooming in milder climates. The shrubs have an upright habit with arching stems. Full sun to part shade in hotter areas. Zones 8-10
‘Bella Mix’: Compact 14-16 inch plants that flower well even in heat. This is a clean mix of apricot, coral, red, peach, rose, pink, ivory and lemon yellow. >Excellent for garden containers and even indoors.

Achillea

Yarrow: Perennial.  This genus is native to the North American prairie.  It is well suited to hot and dry summers and an excellent choice for cut flower gardens or the middle of the perennial border.  Full sun to partial shade.  Zones 3-10

millefolium 'Cerise Queen': vigorous, mat-forming, dark green leaves, bright magenta-pink w/ white flowers.  Height 24-30"

tomentosum 'Aurea' Wooly Yarrow: Wooly gray-green leaves, flowers to 3” across of lemon-yellow, early to late summer, to 14” tall, keep this one on the dry side.

Ageratum

Floss Flower, Blue Mink: Great for summer and fall color.  Part shade or full sun on coast, rich, moist soil.
Azure Pearl  Early blooming variety to about 12 inches high, azure blue flowers
‘Blue Horizon’ blue–violet, to 18”, good for cutting
‘Hawaii Series’ Flower size is similar to
‘Blue Danube’ Leaf size is smaller and a more compact plant, 5” to 6”
‘Shell Pink’ soft rose pink flowers
leilani  14-16” tall, blue flowers, has a full bushy habit and is very free flowering
Trinidad Mix a unique blend, flowers in white, blue, violet and pink, 6” tall.

Ajania

pacifica  syn. Chrysanthemum pacificum,
spreading loose mound of evergreen deep green leaves with white beneath, to 18 inches, brilliant goldflowers cover the plant in fall, zones 4-10 
'Bellania Bea' Similar to the original form, with very large, golden-yellow, button-shaped flower heads, typical Ajania foliage

Ajuga

repens 'Carpet Bugle': Perennial.  While this plant is chiefly grown for its showy foliage, it does have an interesting flower spike in the spring.  It performs well under all conditions, making it an excellent choice for any garden setting.  Use it as a groundcover or in planters.  Full sun to part shade.  Height 4-6".Zones 3-10.
'Bronze'  Deep burgundy leaves, 6” tall, spreading
'Burgundy Glow'  Green, pink, cream, & rose leaves.
'Catlin's Giant'  Large purple leaves.
‘Chocolate Chip’ very dwarf with narrow chocolate colored leaves, blue flowers
‘Mahogany’ deep mahogany leaves, robust, bright blue flowers
‘Metallica’ vigorous grower with shiny bronze foliage
‘Multicolor Rainbow’ white, pink & purple leaves
‘Purple Brocade’ deep purple foliage with distinctive toothed edges, blue flowers
‘Rosea’ rosy-pink flowers
'Silver Queen' Apple green edged with white

Alcea

Biennial.  An old-fashioned garden plant, it is always popular for the vertical structure it provides in the back of the garden. It reseeds easily so expect some volunteers!  Full sun. Zones 3-8.
ficifolia A vigorous dwarf selection with light yellow single flowers.  Height 16-18"
rosea the old fashioned hollyhock species
'Chater's' Series Double flowers available in colors of red, rose, salmon, pink, white, yellow and mix.  Height 6-7 ft
'Watchman' Dark red to black flowers. Height to 6'
‘Peaches and Dreams’ Pure double creamy peach blooms, some tinged with a raspberry-pink, smother tall stems. To 80”

Alchemilla

mollis ‘Thriller’: Yellowish flowers over gray green leaves, a good cut flower variety

Alonsoa                       

linearis 'Mask Flower': a wonderful garden plant with coral flowers that are larger and more plentiful with each bloom 18-24” high

Alstroemeria

“Little Eleanor”:A naturally dwarf, golden yellow flowered alstroemaeria, which blooms is late spring. Full sun, do not allow to dry out, feed with a high nitrogen fertilizer. Zones 7-9

Althernanthera  

Joseph’s Coat: Grown for its attractive foliage, use as a ground cover or bedding plant, prefers moist well drained soil, full to part sun. Zone 10

Alyssum

‘Aphrodite Series’ a compact Alyssum, gets to 2.5” to 3” tall & 10” wide
‘Easter Bonnet’ Series compact, 6” to 8” tall, longer shelf life in packs than other varieties.
‘Snow Crystal’ the standard white Alyssum
‘Wandering’ Series This Cascading series come in Apricot, Pink, Red, Rose, or Mixed

Amaranthus:

zones 8-10
‘Aurora’ a combination of creamy yellow leaves on top with dark green lower leaves, easily grown in dry sunny locations and poor soil for best results.
‘Early Splendor’ bright crimson red on bronze leaves, an improved ‘Molten Fire’, the same cultural habit as ‘Aurora’.

Ammi

majus 'Queen of Africa'
Annual.  Large white umbels cover this plant in summer.  The soft green foliage complements the flowers that resemble delicate lacework.  It is a great fresh cut flower, or it can be dyed to use in dried arrangements.  Full sun.  Height 12"–36” Zones 6-10

Anacyclus

depressus               Mt. Atlas Daisy
Perennial.  This member of the daisy family has beautiful white flowers with yellow disks and a red reverse.  The foliage is very similar to chamomile.  It makes a nice rock garden or border plant.  Full sun in well-drained soil. Height 6-8" Zones 6-10.

Anchusa

capensis 'Blue Angel' Summer Forget-Me-Not: Biennial/Annual, Habit is upright but compact, and is covered with marine blue flowers in early summer. Full sun or light shade in moist soil. Height to 8". Zones 3-8

Angelonia                        

Summer Snapdragon
Tender perennial, extremely heat tolerant. Tiny "butterfly" Snapdragon-like flowers cover this upright plant all summer.  Plant in early summer, and enjoy all season.  Full sun. Height to 2 feet.   
'Blue Pacific' Dwarf and rounded habit. Blue flowers
‘Tiger Princess’ Blue and white bicolor flowers 
‘Angel Mist’ Series Grows vigorously and uniformly into lush, airy plants. These garden-tough plants thrive in heat, and tolerate both dry and wet conditions. 18 to 24”-in.  The Angel Mist series is perfect for cut flower gardens, too.
‘Lavender Angel’ improved lavender color
‘Lavender Pink Angel’ improved lavender pink
'Light Pink Angel’ improved pink

Aptenia

cordifolia ‘Crystal’: Prostrate perennial with fleshy heart-shaped leaves with a slightly crystalline appearance.

Aquilegia

Columbine: Perennial.  This genus is excellent for the shady perennial garden.  Their blue-green foliage brightens any corner, and the spurred flowers are a welcome addition to the spring garden.  Best in partial shade.
alpina  Charming rock garden plant with true blue flowers medium-large with short spurs. To 8” tall.
‘Chocolate Soldier’ chocolate-purple flowers, green staples, brown corolla, good cut flower variety with a nice scent
‘Christa Barlow’ double pom-pom shaped flower in dark blue with a white edge
'Dragonfly'  Mix large, bright flowers in rose, blue, yellow, white, pink and crimson. 16” to 18”
‘Irish Elegance’ to 24 inches, double spur-less blossoms resembling a mini Camelia. Flowers ivory-white with a greenish tint.
'McKana's Giant Mix'   Beautiful as a cut flower, with long, upright spurs of mixed colors including blue, pink, maroon, purple, red, white and yellow. Height to 30"
'Miss Huish' spurless double violet-blue columbine
'Nora Barlow'   Very uniform, double upward facing spurs and lacy foliage.  Flowers are rose with a green to white edge. Height 25-30"
‘Rocky Mountain Blue’ caerulea species, a glorious light to deep blue variety, large flowers, sometimes bi-colored 12-24 in tall.
‘Tequila Sunrise’ beautiful masses of 2” coral-orange flowers with a gold corolla, to 18 inches high.

Arabis

zones 3-7
caucasica variegata, white flowers over nicely defined creamy white variegated leaves
ferdinandi-coburgii variegata, (syn. procurrens) similar growth habit to caucasica but with smaller ivory variegated leaves and lower growing, profuse bloomer, white flowers
ferdinandi-coburgii‘Old Gold’ (syn. procurrens) same as above with more yellow in the leaves

Arctotis   -see Venidium

Arenaria

montana Sandwort: Perennial.  White flowers adorn these vigorous, low growing, evergreen plants.  The foliage is an attractive gray-green.  It makes the perfect groundcover.  Full sun to partial sun.  Keep the soil moist.  Height 2-4" Zones 4-9

Armeria

Sea Pink:Perennial.  This genus is evergreen, with grass-like foliage.  There is quite a contrast between the foliage and the narrow flower stems that support the large globular flowers.  Full sun to part shade. Zones 6-1
latifolia (A. pseudoarmeria)  Larger, broad, strap-like leaves.  Flowers range from pink to white. Height 6-10"
maritima“Sea Pinks” smaller tufts of foliage, 10” tall, 12” wide.
'Joystick' Series Lilac or red, 14” to 16” tall
'Ornament Mix' Mix of white to mauve flowers.  Height 10-12"
'Pink Lusitanica'Rose flowers.  Height 6-10"
'Pink Shades' Mix of pink shades.  Height 6-10

Argyranthemum or Cobbity Daisy

Zones 8-10
‘Cobbity Sugar Baby’ single white with yellow center
‘Cobbity Summer Melody’ double pink
‘Cobbity Summer Pink’ single pink with yellow center
‘Comet Pink’ grayish-green foliage, single medium pink blooms with yellow centers
‘Comet White’ gray-green foliage, single pure white flowers with yellow centers
‘Harvest Snow’ sturdy silver-green foliage, single white flowers with large golden centers, 14-16 in. tall
‘Lemon Delight’ single lemon yellow flowers, silver-green foliage, early flowering, 15-18 in. tall
‘Lilliput’ single white flowers
‘Mawi’ Double, pink flowers w/ dark center
‘Pink Dwarf’ upright habit, flowers pink with yellow center, good for baskets, planters, and window boxes
‘Primrose Petite’ single pastel yellow with large golden yellow center, 14-16” tall
‘Stars Pink’ mid-pink anemone-type flowers, compact growth habit, gray-green foliage,
‘Summer Eyes’ single white with pink blush flowers, large semi double center is burgundy-red with golden stamens. 14-16 in. tall.
‘Vancouver’ double pink flowers, 2-3’ tall

Artemesia

Wormwood: Perennial.  This genus is known for silver foliage. They require little maintenance.  All will develop woody stems with age.  All species are drought tolerant once established, so be sure not to over-water. Full sun.
'Powis Castle' This cultivar is a hybrid.  With its finely dissected leaves and gentle mounding habit, this Artemesia is the perfect choice for contrast in the perennial garden.  Height to 3 feet.
schmidtiana nana 'Silver Mound' This is the perfect mid-sized addition for your garden.  It’s lacey foliage forms a perfect "mound" of silver that provides excellent contrast to larger leafed plants. Full sun.  Height 12-15".
stelleriana 'Silver Brocade': Beach Wormwood, This hardy version of Dusty Miller will hold up to the worst site conditions you can imagine.  It is a beautiful selection for costal gardens.  With its large lobed leaves, it offers a rough texture to the perennial border. Full sun. Height 3'
‘Oriental Limelight‘ appealing variegated foliage in lemon yellow and green. Its mounding and self branching habit make it a great companion for many flowering plants. It’s a must-have for patio pots and flower beds from spring until fall.

Aster

alpinus light blue Blooms in summer with 3” flowers in shades of lavender and blue, to 12” tall
‘Goliath’12 to 30 inches high, large soft blue flowers
‘Starlight Mix’ annual aster in mixed shades

Asteriscus

maritimus Gold Coin
With its unusual, flat, disc shaped daisy flower, this plant is an interesting addition to the front of any perennial border.  It forms a stout, shiny green rosette with bright golden-yellow flowers. Full sun.
'Golden Dollar' Compact.  Height 8-10"

Astrantia

major: Perennial to 18 inches tall, flowers are from white to soft pink to red and sometimes light green. A good cut flower and dries well. Zones 6-9

Aubrieta

deltoidea: Perennial.This plant makes for a beautiful groundcover. It is covered with tiny blooms for most of the season. Leaves are oblong in shape and somewhat hairy. Part sun to part shade.  Height 4-6" Zones 4-9
‘Blue Beauty’
'Cascade Mix' Mix of blue, lilac, and purple
‘Dr. Mules’ rich violet-blue flowers
‘Gloria’
'Large Flowering Mix' large red to purple flowers, use in borders, sun to part shade, to 12" tall and 6" wide.