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RHS Award of Garden Merit® Plants

Royal Horticulture Society Award of Garden Merit LogoThe Royal Horticulture Society's Award of Garden Merit goes only to plants that meet a minimum of the following requirements: "excellent for ordinary use in appropriate conditions, available( at nurseries and garden centers ), of good constitution, essentially stable in form and colour, and reasonably resistant to pests and diseases". The AGM list is updated periodically to ensure that these are still the best of the best. "Awards are only made after assessment by an RHS forum of experts appointed by the Society to assess that particular trial. Each forum has its own area of expertise, and draws upon the experience of a wide range of experts, including nurserymen, specialist growers and well-known horticulturists. This assessment must then be ratified by the relevant Plant Committee. The trial and assessments usually take place at one of the four RHS Gardens but can also take place at one of our partner gardens, National Trust gardens or commercial nurseries." For more information and to see all of the RHS AGM winners visit https://www.rhs.org.uk/plants/trials-awards/award-of-garden-merit.

 

Adolphe Audusson Special Camellia

Camellia japonica 'Adolphe Audusson Special'  

A Camellia Hall of Fame Award winner! If I could only have one Camellia in my garden this would be it! The large, semi-double deep red flowers are randomly splashed, streaked, and flecked with brightly contrasting white markings making each flower unique. Adolphe Audusson Special Camellia flowers in midseason. It is a vigorous growing Camellia often recommended for cool climates.  Item# 309

Grows To: 8-12'H x 6-10'W
Outdoor Light: AM sun, Part sun, Part shade, Filtered shade, Light shade
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
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Aimee Gardenia, Aimee Yoshioka Cape Jasmine

Gardenia jasminoides 'Aimee Yoshioka', G. augusta  

Huge 4-5" double blooms are intensely fragrant! Aimee Yoshioka is the largest flowered of all Gardenias with large, glossy, dark green foliage on a vigorous and moderately fast growing evergreen shrub. The large dark foliage provides a wonderful foil for the large white flowers. Easily trained into a tree standard. Aimee is also considered to be one of the largest growing Gardenias, particularly in mild winter climates where it is known to reach 10-12' high but 5-6' may be more typical. Item# 1154.

Grows To: 5-6'H x 5-7'W
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
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Alma Pötschke New England Aster, Michaelmas Daisy

Symphyotrichum novae-angliae 'Andenken an Alma Pötschke', Aster novae-angliae  

Up to 2" wide, deep rosy pink daisies with a complimentary bright yellow eye are produced in abundance over an extended period beginning in late summer and into fall attracting a variety of mainly smaller pollinators but migrating Monarchs may seek these as well. Alma Pötschke New England Aster, a selection of our native Symphyotrichum novae-angliae, is a medium to tall, clump forming, herbaceous perennial growing to about 3-4' high. Its actual full name is Andenken an Alma Pötschke, which translates from the German to Souvenir of Alma Pötschke. An RHS Award of Garden Merit winner, Alma Pötschke is an older German cultivar but it is still one of the best of the larger growing pink flowered forms. Provide a full sun to mostly sunny site in an average to well-drained, fertile soil with average moisture for optimum vigor and flowering. Staking may be needed if plants are grown in overly rich fertile soils. Images courtesy of Ball Horticulture, Inc., all rights reserved. Item# 13328

Grows To: 3-4'H x 2'W, space about 1-1/2 to 2' apart
Outdoor Light: Full sun, Mostly sunny, Part shade, Morning sun
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
US$12.99
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American Gold Rush Black-Eyed Susan, Rudbeckia, Coneflower

Rudbeckia 'American Gold Rush'  PP28498

A 2020 All American Selections Herbaceous Perennial award winner! 2-3" wide dark-eyed golden yellow daisies are produced throughout the summer and even into fall atop a dense and compact well-branched plant. American Gold Rush Rudbeckia was selected with disease resistance in mind as well as this plant's ability to flower throughout summer and a compact habit. It may be most similar to and is considered to be a hybrid of Rudbeckia fulgida var. deamii, or the Brown-Eyed Susan, which can reach 3' in height. Like its parent, expect this hardy clump forming perennial to revel in the heat and sun of summer with its disk flowers providing nectar for smaller pollinators and the ripened seeds of fall and winter are sure to attract songbirds. Provide American Gold Rush Rudbeckia with a full to mostly sunny site in an average moist, well-drained soil for optimum vigor and flowering. Add this easy to grow perennial to the garden and landscape but it is also compact and free-flowering enough to provide a summer long show as a container plant. Item# 12167

Grows To: 18-24"H x 18-24"W
Outdoor Light: Full sun, Mostly sunny, *Part shade, *Part sun
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
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Amistad Salvia, Friendship Sage

Salvia x 'Amistad'  PP23578

Truly one of the very best perennial Salvias! An endless display of huge purple tubular flowers that emerge from dark colored calyxes are borne from spring to frost on this vigorous growing hybrid Salvia. Amistad Salvia begins flowering even when still small and your hummingbirds, butterflies, and native bees will love you for its continuous supply of rich nectar. Give this big guy plenty of room because it can exceed 4' wide by the end of summer with a mature height of about 4'! Amistad Salvia was selected as a 2016 Royal Horticulture Society Award of Garden Merit Winner. Item# 10567

Grows To: 3-4'H x 4-6'W
Outdoor Light: Full sun, Mostly sunny
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
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Anticipation Camellia

Camellia x williamsii 'Anticipation'  

An RHS Award of Garden Merit winner! Large, deep rosy pink, peony form flowers are produced over an exceptionally long period from early to late in the season or December to April. Anticipation Camellia, a hybrid C. x williamsii type, is a large growing, evergreen shrub cloaked in very dark foliage and with a naturally upright hybrid making it a good choice as a screen or hedge as well as a specimen. Provide Camellias with a fertile soil rich in organic matter, with average moisture, and a deep organic mulch. See our Camellia and Sasanqua Growing Guide for an in-depth guide to properly planting and growing these beautiful, long-lived evergreen shrubs. Item# 13199

Grows To: 8-12'H x 6-10'W
Outdoor Light: AM sun, Part sun, Part shade, Filtered shade, Light shade
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
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Apple Blossom Amaryllis

Hippeastrum 'Apple Blossom'  

Clusters of large 7-8" wide, trumpet shaped white flowers are heavily overlaid with salmon to rosy pink veining on the four upper petals and the lowest petal is typically nearly all white creating a two-tone effect. Apple Blossom Amaryllis, a Hippeastrum hybrid, is an older yet still quite popular cultivar that makes an easy, reliable, and rewarding spring to early summer flowering bulb that readily multiplies. It can also be forced for winter flowering as a container plant. Provide Amaryllis with a well drained, fertile soil in a full to mostly sunny site for optimum vigor and flowering. You will receive one each 1-1/2" to 2" diameter bulb per container that you can expect to flower within 1-2 years. These images are from Don and Nita Copenhaver's gardens near DeRidder, Louisiana. Apple Blossom Amaryllis is an RHS Award of Garden Merit selection. Item# 12699

Grows To: 18-24"H x 12-18"W
Outdoor Light: Full sun, Mostly sunny, Part shade
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 28
US$14.99

August Beauty Gardenia, Cape Jessamine, Cape Jasmine

Gardenia jasminoides 'August Beauty'  

3" double white, wonderfully fragrant flowers are produced over an extended period beginning in about midspring and continuing into midsummer on mature plants and they attract the hummingbird-like Sphinx moths as a pollinator. August Beauty Gardenia is a naturally evergreen, medium-sized shrub, growing to about 4-6'H x 4-6'W that makes an easy specimen plant or informal hedge for the garden or landscape. Provide Gardenias with a full sun to partially shaded site in a well-draining, average moist, fertile soil for optimum vigor and flowering. In the hottest summer climates of its range the Gardenia often benefits from midday to afternoon shade. August Beauty Gardenia has long been a favorite in southern gardens for its fragrance, vigor, and reliability. Item# 310

Grows To: 6'H x 4'W
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 69
US$12.99

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Ave Maria Camellia

Camellia japonica 'Ave Maria'  

Beautiful, silvery-pink, small to medium size, double peony flowers are produced beginning as early as October and continuing well into January. Ave Maria Camellia develops into a nicely rounded evergreen shrub about as wide as it is tall. Item# 9106.

Grows To: 8-12'H x 6-10'W
Outdoor Light: AM sun, Part sun, Part shade, Filtered shade, Light shade
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
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Bahama Blue Passion Flower, Passion Vine

Passiflora caerulea 'Bahama Blue'  

4-5" wide flowers with white petals and sepals are topped by a crown of white filaments with a light purple halo surrounding the central portion of these exotic looking flowers. Bahama Blue Passion Flower is a beautiful and vigorous free flowering selection of the Blue Crown Passion Flower, Passiflora caerulea, with all its hardiness and reliability. The nectar rich flowers are adored by larger bees and the foliage is a host to a variety of butterflies. Caterpillar host: Gulf Fritillary, Julia Butterfly, Variegated Fritillary, and Zebra Longwing. Provide a full to mostly sunny site in a moderately fertile, average moist, well-drained soil for optimum vigor and flowering. Click on "More Details and Growing Info" or the image to learn more about growing Passionvines as perennials in containers or in the garden and landscape. Item# 11222

Grows To: 15-20'H+
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun
4.5 inch Pot / 20 fl.oz. / 591 ml
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Tall long-lasting spikes of lavender and purple flowers are held on sturdy stems above the beautiful rich glossy green foliage in late summer and fall. Bear's Breeches is an easy to grow slowly spreading perennial that lends its form, flowers, and foliage to the shaded garden, landscape, and even as a container plant. The leaf pattern of Acanthus mollis was used extensively in Greek architecture. Provide good to average drainage, moderate fertility and average moisture for optimum growth and flowering. Item# 3003

Grows To: Foliage to 18-24"H x 20-30"W
Outdoor Light: Part shade, Light shade, (Full sun in cooler climates)

Berenice Boddy Camellia

Camellia japonica 'Berenice Boddy'  

Two-toned semi-double flowers are dark pink at the outer edges fading to a light pink toward the center creating a beautiful effect. The medium sized flowers are born in mid-season on this vigorous old garden favorite. Item# 9528.

Grows To: 8-12'H x 6-10'W
Outdoor Light: AM sun, Part sun, Part shade, Filtered shade, Light shade
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
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Bicolor Mexican Sage Bush

Salvia leucantha 'Bicolor'  

White tubular blooms emerge from tall, velvety, purple calyxes on dense flower spikes from late summer to fall. This is considered to be the normal color form for the species. Soft velvety medium to gray-green foliage. Mexican Sage bush is a drought tolerant, sun and heat loving reliable clump forming perennial that is considered deer proof. Item# 10284.

Grows To: 3-4'H x 3-4'W
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
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Bicolor Red Shrimp Plant, False Hope, Shrimp Plant, Shrimp Bush

Justicia brandegeeana 'Bicolor', Beloperone guttata, Drejerella guttata, Justicia guttata  

The bracts start out chartreuse to yellow and quickly begin to take on bronze tones and mature to a deep brick red. A favorite among hummingbirds, the nectar rich, tubular white flowers peak out from between the bracts and have maroon bee guides on the lower lip. The Bicolor Red Shrimp Plant, a selection of Justicia brandeegeana, is a heat loving, naturally evergreen, bushy, tropical plant with dark olive green foliage and grows to about 24" high by about 18" wide. The foliage of these plants may eventually show white and cream variegation as they were propagated from variegated mother plants. The Red Shrimp Plants can be enjoyed both as container plants as specimens or in mixed company as well as in the garden and landscape. It is both full sun and bright shade tolerant but tends to have the densest branching habit where it receives at least 4 hours or more of direct sunlight. Provide an average to well-drained, moderately fertile, average moist soil for optimum vigor and flowering. The Red Shrimp Plant is an RHS Award of Garden Merit winner. Caterpillar host: Cuban Crescent, Texan Crescent, White Peacock, and Malachite. Item# 12909

Grows To: 18-24''H x 12-18''W
Outdoor Light: Full sun, Part shade, Part sun, Filtered shade, Light shade

Black Gamecock Louisiana Iris

Iris x 'Black Gamecock'  

This multiple award winning Louisiana Iris produces large velvety deep purple falls and deep purple signals with a narrow golden line down the center of each one late in the season. Black Gamecock Louisiana Iris is a vigorous and understandably popular selection with excellent vigor that multiplies readily in moist to wet soils. The fans of green sword shaped foliage reaches 3-4' high on mature plants at the peak of the growing season. Provide Louisiana Irises with a moist to average moist to moderately wet site for the best results in a mostly sunny position. Black Gamecock has won the RHS Award of Garden Merit and the 1986 Mary Swords DeBallion AIS Award (the highest award exclusive only to Louisiana Iris in the AIS). Images courtesy of Walter's Gardens, Inc., all rights reserved. Item# 11939

Grows To: 24-30"H
Outdoor Light: Full sun, Mostly sunny
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 61
US$14.99

Black Knight Butterfly Bush, Buddleja

Buddleja davidii 'Black Knight'  

Showy deep violet-purple, fragrant spikes, to 8" long, are held at the ends of the arching, woody stems. Black Knight Butterfly Bush is an exceptionally free-flowering shrub, producing the intensely deep purple, fragrant flowers  from spring until fall. An excellent choice for butterfly gardens as well as providing nectar for a host of other pollinators including hummingbirds. Black Knight, an RHS Award of Garden Merit winner, is still one of the most strikingly colored and popular of all Buddlejas grown today. Item# 322.

Grows To: 4-6'H x 4-6'W
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
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Blue Butterfly Bush, Blue Glory Bower, Blue Wings Bush

Rotheca myricoides 'Ugandense', Clerodendrum ugandense, C. myricoides 'Ugandense'  

From spring to fall the Blue Butterfly Bush produces large clusters of dainty, blue flowers that very much resemble little butterflies and thus the name. This is a tropical plant that can be grown as a root hardy perennial in the northern portions of its range (zone 9 and warmer) otherwise it makes an easy to grow container plant. In its native habitat it can reach 10-12'H but more typically it is maintained as a 4-6'H shrub. The long canes lend it to use as an espalier. Item# 10681

USDA Cold Hardiness Zones: 9,10,11,(8B? with protection)
Grows To: 4-6'H x 4-6'W and larger in mild winter climates.
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun

Blue Crown Passion Vine

Passiflora caerulea  

A crown of deep sapphire blue filaments create a striking contrast with the white petals and sepals that are held against the rich green foliage throughout the growing season. The Blue Crown Passionflower is a vigorous growing tropical vine and can easily reach 20' once well-established. This is also one of the most reliably cold hardy Passionvines with foliage remaining evergreen in the mildest 8B winters but dying back to the ground in severe winters and returning readily in spring. The Blue Crown Passionflower may spread somewhat by rhizomes but it is generally much more tame than the Maypop. Cross pollination may produce tropical tasting tangy fruit that surrounds the dark seeds inside. Click on "More Details and Growing Info" or the image to learn more about growing Passionvines as perennials in containers or in the garden and landscape. Caterpillar host: Gulf Fritillary, Julia Butterfly, Variegated Fritillary, and Zebra Longwing. Item# 733

Grows To: 15-20'H+
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
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Blue Fortune Agastache, Hyssop

Agastache 'Blue Fortune'  

Masses of dense blue spikes of fragrant, tubular flowers are held above the licorice scented, rich green foliage in summer on this highly sought after Agastache. The nectar rich flowers of Blue Fortune Agastache attract hordes of native pollinators and other beneficials to the garden. The beautiful form, fragrance, and flower power, and proven performance of this Agastache have made it a hit in gardens across the US. Use Blue Fortune in mass at the back of the border or in small specimen groupings to make a splash of long lasting color. Item# 10882.

Grows To: 36-48"H space at about 24" apart
Outdoor Light: Full sun, Mostly sun

Large clusters of lightly fragrant lavender-blue flowers are produced in early spring and are held well above the deep dark green foliage. Blue Moon Phlox was selected for its clusters of large full flowers and vigor. This is an excellent choice for lightly shaded gardens or as a groundcover under deciduous trees. Provide shade during the hottest portion of the day in hot summer climates and well-drained soil rich in organic matter. Easy and reliable once established. The flowers provide early spring nectar to butterflies and other pollinators. Blue Moon Phlox along with the straight species Phlox divaricata tied for the Top Performer in Mt. Cuba Center Phlox for Shade trials. Item# 11217

Grows To: 6-12"H and slowly spreads
Outdoor Light: *Full sun, Part sun, Part shade, Light shade
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
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Clusters and chains of large 3" wide purple-blue trumpet shaped flowers with contrasting yellow throats are produced throughout much of the growing season and attract larger bees and butterflies as well as the occassional hummingbird. The Blue Sky Vine, Thunbergia grandiflora, is an exceptionally popular tropical vine that is easy, reliable, has excellent flower power and it can be grown as a die-back perennial in zones 8-9 if established early in the growing season (click the "More Details and Growing Info" link or the plant's image to learn more). It may remain evergreen in warm frost free tropical climates where it can flower nearly yearround. The Blue Sky Vine is a heat and sunloving twining vine suitable for metal fences, smaller arbors, and medium to large trellises or other sturdy supports. Provide a well-drained, moderately fertile soil. The Blue Sky Vine can also be enjoyed as an easy and low-maintenance container plant. Item# 1108.

Grows To: 15'-30'H
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun

Spikes of deep blue to near purple pea-shaped flowers are produced in spring atop the gray-green foliage in mid to late spring. Blue Wild Indigo is a long-lived easy to grow native that develops and extensive taproot and so it prefers not to be moved once it begins to get established. Baptisias are durable pest and disease resistant perennials that should be considered the Lupine of the South. Provide a sunny position for optimum flowering. Like a fine wine these natives only get better with age. Item# 11593

Grows To: 2-4'H x 2-3'W
Outdoor Light: Full sun, Mostly sunny
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 17
US$12.99

Bob Hope Camellia

Camellia japonica 'Bob Hope'  

Deep dark red wavy petals surround and often intermingle with the boss of brightly contrasting golden yellow stamens. Bob Hope Camellia produces large to very large flowers in mid to late season (March and April in our gardens) on a moderately vigorous upright to rounded evergreen shrub. Another beautiful introduction from Nuccio's Nurseries. Item# 11339

Grows To: 8-12'H x 6-10'W
Outdoor Light: AM sun, Part sun, Part shade, Filtered shade, Light shade
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
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Bog Sage, Blue Spike Sage

Salvia uliginosa  

Spikes of 1/2" long, tubular, two-lipped, deep azure blue flowers have a contrasting bright white bee-guide and throat are produced in late spring or early summer and continue into fall atop the tall wispy stems. The nectar rich flowers attract bees, butterflies, and hummingbirds. Bog Sage, Salvia uliginosa, is a rhizomatous, herbaceous perennial producing a multitude of tall thin wiry stems that can reach 5-6' high in rich fertile moist soils but tends to remain shorter, 3-4' high or so, under average moist garden conditions, which it can tolerate quite well, despite its name, once fully established. it tends to be more restrained under drier conditions as well. Its long flowering season and ease of care have garnered Bog Sage the RHS Award of Garden Merit. It can tolerate full sun in the cooler portions of its range but may be at its best where it receives a little midday shade in areas with hot summer climates. Item# 12906

Grows To: 4-6'H and spreading, space about 1' apart for groupings
Outdoor Light: Full sun, Mostly sunny, Part shade
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
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Adolphe Audusson Special Camellia

Camellia japonica 'Adolphe Audusson Special'  

A Camellia Hall of Fame Award winner! If I could only have one Camellia in my garden this would be it! The large, semi-double deep red flowers are randomly splashed, streaked, and flecked with brightly contrasting white markings making each flower unique. Adolphe Audusson Special Camellia flowers in midseason. It is a vigorous growing Camellia often recommended for cool climates.  Item# 309

Grows To: 8-12'H x 6-10'W
Outdoor Light: AM sun, Part sun, Part shade, Filtered shade, Light shade
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
US$19.99
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