Award of Garden Merit Winners

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Hosta

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Hosta

Hemerocallis

Sedum

Heuchera

Phlox

Whitehall

Echinacea

Iris

Helleborus

Dianthus

Coreopsis

Astilbe

Hibiscus

Salvia

Liriope

Monarda

Clematis

Lavandula

Veronica

Aquilegia

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Achillea

Leucanthemum

Ajuga

Carex

Buddleia

Delphinium

Hedera

Paeonia

Delosperma

Gaillardia

Lantana

Papaver

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Geranium

Heucherella

Kniphofia

Nepeta

Campanula

Miscanthus

Panicum

Vinca

Agastache

Alcea

Athyrium

Mangave

Perovskia

Aster

Lupinus

Ophiopogon

Primula

Anemone

LAGERSTROEMIA

Penstemon

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Platycodon

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Lamium

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Acorus

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Epimedium

Euonymus

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Pachysandra

Polemonium

Amsonia

Armeria

Asclepias

Gypsophila

Ligularia

Scabiosa

Stachys

Tiarella

Viola

Artemisia

Aruncus

Dryopteris

Hakonechloa

Lysimachia

Mazus

Schizachyrium

Tricyrtis

Alstroemeria

Colocasia

Crocosmia

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Plants that Can for those who think they Can't!

The Award of Garden Merit (AGM) is a mark of quality awarded, since 1922, to garden plants by the British Royal Horticultural Society (RHS). Awards are made annually after plant trials intended to judge the plants' performance. Trials may last for one or more years, depending on the type of plant being trialled, and may be performed at RHS Garden, Wisley, other RHS gardens or after observation of plants in specialist collections.

The RHS AGM is awarded only to plants that meet the following criteria:

- Outstanding excellence for ordinary garden decoration or use
- Available for general purchase
- Good constitution
- Do not require highly specialist growing conditions or care
- Are not particularly susceptible to any pest or disease
- Are not be subject to an unreasonable degree of reversion in its vegetative or floral characteristics

Though growing conditions and plant types may vary, the purpose of the award is always the same: to highlight the best plants available to the home gardener. Check out these Award of Garden Merit recipients:

Achillea

Achillea 'Coronation Gold' (3.5 inch pot)

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Achillea

Achillea 'Firefly Diamond' PP32986 (25) BR Plants

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Achillea

Achillea 'Firefly Diamond' PPAF (4) 1-gallons

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Now: $122.11

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Achillea

Achillea 'Firefly Peach Sky' PP32404 (4) 1-gallons

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Achillea

Achillea 'Firefly Sunshine' PP32403 (25) BR Plants

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Now: $217.04

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Achillea

Achillea 'Little Moonshine' (10)ct Quarts

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Now: $92.28

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Agastache

Agastache 'Blue Fortune' (25) BR Plants

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Now: $192.35

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Anemone

Anemone 'Curtain Call Pink' PP30739 (30)ct Flat

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Now: $236.90

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Anemone

Anemone FALL IN LOVE 'Sweetly' PP31089 (30)ct Flat

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Now: $258.10

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Aruncus

Aruncus 'Chantilly Lace' PP30740 (30)ct Flat

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Now: $257.69

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Aruncus

Aruncus 'Chantilly Lace' PP30740 (4) 1-gallons

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Now: $127.87

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Aruncus

Aruncus aethusifolius (30)ct Flat

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Now: $178.06

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Achillea

Achillea 'Coronation Gold' (3.5 inch pot)

Achillea 'Coronation Gold' (3.5-inch pot) Common name: Yarrow Height: 24-36 Inches Spread: 18-24 Inches Hardiness Zone: 3-8 Full Sun Deciduous Golden Yellow blooms - Summer Tolerates drought, heat and humidity Gray-green, aromatic fern-like foliage...

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Achillea

Achillea 'Firefly Diamond' PP32986 (25) BR Plants

Achillea 'Firefly Diamond' PP32986 CPBRAF (25) Bare Root PlantsFirefly CollectionCommon Name: Yarrow Ivory white flowers contrast beautifully with its dark green foliage. Upright, columnar habit. Flowers remain attractive as they age. Fireflies, or...

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Now: $217.04
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Achillea

Achillea 'Firefly Diamond' PPAF (4) 1-gallons

Achillea 'Firefly Diamond' PPAF (4) 1-gallons Common Name: YarrowIvory white flowers contrast beautifully with its dark green foliage. Upright, columnar habit. Flowers remain attractive as they age. Height: 24.0-28.0 InchesSpread: 32.0-40.0...

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Now: $122.11
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Achillea

Achillea 'Firefly Peach Sky' PP32404 (4) 1-gallons

Achillea 'Firefly Peach Sky' PP32404 Common Name: YarrowLight peachy orange flowers age to yellow. Mature and new flowers create a blend of colors, much like you would find on a peach fruit. Tall, upright habit. Height: 32.0-36.0 InchesSpread: 28...

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Now: $122.11
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Achillea

Achillea 'Firefly Sunshine' PP32403 (25) BR Plants

Achillea 'Firefly Sunshine' PP32403 CPBRAF (25) Bare Root PlantsFirefly CollectionCommon Name: Yarrow One of the very best Yarrows for lasting color throughout the summer. Bright yellow flowers contrast with dark gray green foliage. Upright habit...

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Now: $217.04
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Achillea

Achillea 'Little Moonshine' (10)ct Quarts

Achillea 'Little Moonshine' (10)ct Quarts Fuss-free, heat-loving bloomer with large clusters of canary yellow flowers.Compact dwarf, mounding, early blooming sport of 'Moonshine' with the same yellow flower clusters. Low maintenance, once...

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Now: $92.28
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Agastache

Agastache 'Blue Fortune' (25) BR Plants

Agastache 'Blue Fortune' (25) Bare Root Plants Common name: Hyssop-Anise. A woody-based perennial of the mint family, this giant hyssop cultivar features tiny, tube-shaped, lavender-blue flowers tightly packed in rounded bottlebrush-like spikes atop...

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Now: $192.35
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Anemone

Anemone 'Curtain Call Pink' PP30739 (30)ct Flat

Anemone 'Curtain Call Pink' PP30739 (30)ct FlatCurtain Call SeriesCommon Name: Japanese Anemone This fall blooming Anemone is one of the final performers in your garden for the growing season. Beginning in late summer, this perennial produces bright rose...

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Now: $236.90
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Anemone

Anemone FALL IN LOVE 'Sweetly' PP31089 (30)ct Flat

Anemone FALL IN LOVE® 'Sweetly' PP31089 CPBRAF (30)ct FlatCommon Name: Japanese Anemone You'll love how this perennial will extend the seasonal interest of your garden. When other plants in your garden are fading, FALL IN LOVE® 'Sweetly' is just...

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Now: $258.10
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Aruncus

Aruncus 'Chantilly Lace' PP30740 (30)ct Flat

Aruncus 'Chantilly Lace' PP30740 CPBR6259 (30)ct FlatCommon Name: Goat's Beard 'Chantilly Lace' will be shorter if grown in full sun, closer to 24" tall, than if grown in shade or a sun-filtered area, where it will grow to a height of 30-32". With the...

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Now: $257.69
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Aruncus

Aruncus 'Chantilly Lace' PP30740 (4) 1-gallons

Aruncus 'Chantilly Lace' PP30740 (4) 1-gallons Common Name: Goat's Beard-Dwarf; DECADENCE® DELUXE Series Common Name: False IndigoIn late spring to early summer, soft yellow flowers age to dusty raspberry purple, and both colors appear on...

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Now: $127.87
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Aruncus

Aruncus aethusifolius (30)ct Flat

Aruncus aethusifolius (30)ct Flat Common Name: Goat's Beard-Dwarf; A miniature Goat's Beard with the same traits as A. dioicus at roughly ⅓ the size. This selection grows only 12" tall with fine, glossy, fern-like foliage. From early to midsummer,...

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Now: $178.06
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What are awards that perennial plants can win?

International:

Award of Garden Merit (AGM): a prestigious recognition bestowed by the Royal Horticultural Society (RHS) in the UK to plants that demonstrate outstanding performance and reliability in UK growing conditions. It serves as a valuable marker of quality for gardeners, helping them choose reliable and successful plants for their gardens.
Perennial Plant of the Year (PPA): Chosen by the Perennial Plant Association in North America, this award recognizes a perennial for its overall excellence in terms of low maintenance, adaptability, long bloom season, and multiple garden uses.
All-America Selections (AAS): This program evaluates new cultivars across various plant categories, including perennials, based on specific performance criteria within various regions.

Regional:

Great Plant Picks (GPP): Several regions in the United States and Canada have GPP programs that assess plants for regional suitability and pest/disease resistance.
Proven Winners® Perennial of the Year: This award program highlights high-performing perennials that thrive in diverse growing conditions across North America.

Specific Plant Category Awards:

Daylily of the Year (American Hemerocallis Society): Recognizes outstanding daylilies based on various characteristics like flower form, color, and habit.
Hosta of the Year (American Hosta Society): Celebrates exceptional hostas for their foliage features, growth habit, and overall garden impact.
Grass of the Year (North American Native Plant Society): Recognizes native grasses for their ecological value and ornamental appeal.

Additional Awards:

Royal Horticultural Society (RHS) Plant of Merit (POM): A similar recognition to the AGM, awarded to plants demonstrating excellent performance in UK gardens.
International Bulb Trials: Evaluate and recognize outstanding bulb varieties, including perennials like flowering onions and alliums.

What is the Award of Garden Merit?

The Award of Garden Merit (AGM) is a prestigious recognition bestowed by the Royal Horticultural Society (RHS) in the UK to plants that demonstrate outstanding performance and reliability in UK growing conditions. It serves as a valuable marker of quality for gardeners, helping them choose reliable and successful plants for their gardens.

Here's a breakdown of the key aspects of the AGM:

What it signifies:

Excellent performance: The plant thrives and performs well under typical UK gardening conditions, without requiring excessive care or attention.

Availability: The plant is readily available from reputable nurseries and garden centers.

Good constitution: The plant possesses inherent strength and resilience, showing resistance to diseases and pests.

Stable form and color: The plant retains its expected characteristics, ensuring consistency and predictability in your garden.

Reasonably resistant to pests and diseases: While no plant is entirely immune, AGM-winning plants exhibit a lower susceptibility to common garden problems.

Awarding process:

Plants undergo rigorous trials at RHS gardens or through expert observation in specialist collections.

Trials typically last for one or more years, depending on the plant type.

A panel of horticultural experts evaluates the plants based on the aforementioned criteria.

Awards are only given to plants that meet all the required standards.

Benefits for gardeners:

Provides assurance of a plant's suitability and performance in UK gardens.

Helps save time and money by avoiding plants that might struggle or perform poorly.

Introduces you to a curated selection of reliable and high-quality plants.

Offers a valuable reference point when planning and selecting plants for your garden.

Additional resources:

RHS Award of Garden Merit website: https://www.rhs.org.uk/plants/trials-awards/award-of-garden-merit

Lists of AGM-winning plants: https://www.rhs.org.uk/plants/trials-awards/award-of-garden-merit

Wikipedia article on the Award of Garden Merit: https://en.wikipedia.org/wiki/Award_of_Garden_Merit

What groundcover perennial plants have won the Award of Garden Merit?

There are many groundcover perennial plants that have won the Award of Garden Merit (AGM) by the Royal Horticultural Society (RHS). Here are a few examples:

Hostas: There are over 90 hostas that have been awarded the AGM. They are popular shade-loving plants with a wide variety of leaf colors and shapes. Some popular AGM-winning hostas include 'Francee', 'Gold Standard', and 'Earth Angel'.

Bergenia: These evergreen plants have large, leathery leaves and produce clusters of pink or white flowers in spring. Some popular AGM-winning bergenias include 'Bressingham Ruby' and 'Admiral'.

Ajuga reptans: This low-growing plant has creeping stems and blue flowers that bloom in spring. It is a good choice for groundcover in dry shade. Some popular AGM-winning Ajuga reptans cultivars include 'Catlin's Giant' and 'Purple Spark'.

Geranium cantabrigiense: This hardy geranium has blue flowers that bloom from late spring to summer. It is a good choice for groundcover in sunny or partially shaded areas. Some popular AGM-winning Geranium cantabrigiense cultivars include 'Biokovo', 'Karmina', and 'Rozanne'.

Nepeta x faassenii: This catmint has lavender flowers that bloom from summer to autumn. It is a good choice for groundcover in sunny areas. Some popular AGM-winning Nepeta x faassenii cultivars include 'Six Hills Giant' and 'Walker's Low'.

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Award Winning Plants

What are awards that perennial plants can win?

What is the Award of Garden Merit?

What groundcover perennial plants have won the Award of Garden Merit?