Diamond Award

The Tesselaar Diamond Award highlights plants of distinction. All the plants we offer you are garden worthy, but to qualify for the prestigious Tesselaar Diamond Award, we select only those plants that stand out from the crowd. The best of the best.

Our criterion is based on their floriferous nature, their hardiness, their disease resistance, their ease of care, or their sparkle of exceptional beauty. Diamond Award plants are exceptional, because like diamonds, gardens are forever.

  • Pee Gee Hydrangea 'Sundae Fraise'

    Set to impress.
     

  • Clematis Jackmanii Hybrid 'Veronica's Choice'

    Delicate beauty with hardy growth.
     

  • Double Hydrangea You and Me 'Desire'

    Absolutely desirable.
     

  • Peony 'Sarah Bernhardt'

    A legendary variety.
     

  • Double Hydrangea You and Me 'Forever'

    Patio ready.
     

  • Christmas Lily 'White Dragon'

    A legend.
     

  • Clematis Jackmanii Hybrid 'Ville de Lyon'

    What colour!
     

  • Rhubarb 'Ever Red'

    Ever fabulous.
     

  • Chinese Ground Orchid Pink

    Easy and rewarding orchids.
     

  • Gladioli 'Black Sea'

    Velvet petals.
     

  • Hydrangea 'Deep Purple'

    An international award winner.
     

  • Peony 'Sarah Bernhardt Sport'

    Two colours, one plant.
     

  • Clematis Jackmanii Hybrid 'Dr Ruppel'

    New in 2024.
     

  • Viticella Clematis 'Purpurea Plena Elegans'

    Admirable elegance.
     

  • Gladioli 'Flevo Snow'

    New in 2024.
     

  • Asiatic Lilium Navona

    Classic white flowers.
     

  • Tiger Lily 'Red Velvet'

    Dramatically deep red.
     

  • Peony 'Monsieur Jules Elie'

    Pure romance.
     

  • Clematis Jackmanii Hybrid 'The President'

    New in 2024.
     

  • Dowdeswell Delphinium 'Pink Punch'

    Punchy colour.
     

  • Gladioli 'Flevo Fusion'

    New in 2024.
     

  • Gladioli 'Orange Sun'

    A shining light.
     

  • Hydrangea 'White Knight'

    Shining petals with dark stems.
     

  • Tiger Lily 'White Twinkle'

    A little star.
     

  • Oriental Lilium 'Sorbonne'

    Perfect for picking.
     

  • Origanum 'Bellissimo'

    New in 2024.
     

  • Peony 'Pink Twinkle'

    Perfect for picking.
     

  • Aquilegia Swan Series 'Louisiana'

    Prolific blooms.
     

  • Clematis Jackmanii Hybrid 'Multi Blue'

    Get the blues.
     

  • Fuchsia 'Bicentennial'

    New in 2024.
     

  • Tiger Lily 'Tiger Babies'

    Totally adorable.
     

  • LA Lilium 'Honesty'

    Clear colour.
     

  • Oriental Lilium 'Lungoo'

    New in 2024.
     

  • Oriental Lilium 'Profundo'

    New in 2024.
     

  • Agastache 'Blue Fortune'

    Add vertical interest.
     

  • Marguerite Daisy Angelic 'Lemon Pastel'

    Compact with abundant blooms.
     

  • Caryopteris Bluebeard

    Late season colour.
     

  • Dowdeswell Delphinium 'Morning Lights'

    Exceptional bloomers.
     

  • Dahlia Dahlegria 'Red'

    New in 2024.
     

  • Foxglove 'Pam's Choice'

    Choice blooms.
     

  • Fuchsia 'Mancunian'

    Light up the shade.
     

  • Fuchsia 'Peachy'

    It is a peach.
     

  • Fuchsia 'Seventh Heaven'

    New in 2024.
     

  • Gladioli 'Milka'

    Pretty pastel petals.
     

  • Double Winter Rose 'Golden Years'

    Garden gold.
     

  • Hydrangea 'Magical Revolution'

    Revolutionary colour.
     

  • Hydrangea 'Popcorn Candy'

    Unique petals.
     

  • LA Lilium 'Brindisi'

    In the pink.
     

  • African Daisy 'FlowerPower Spider Purple'

    Picture perfect.
     

  • Peony 'Dr Alexander Fleming'

    Floral magnificence.
     

  • Peony 'Charles Burgess'

    A heritage variety of distinction.
     

  • Peony 'Madame Emile Debatene'

    An heirloom wonder.
     

  • Rose 'Phoenix'

    Strong and fabulous.
     

  • Agastache 'Sweet Lili'

    Glorious, dry tolerant colour.
     

  • Marguerite Daisy Sassy 'Double Deep Rose'

    Heat tolerant and free flowering.
     

  • Viticella Clematis 'Kryspina'

    Head turning colour.
     

  • Clematis Jackmanii Hybrid 'Summer Girl'

    New in 2024.
     

  • Viticella Clematis 'Etoile Violette'

    A winner.
     

  • Viticella Clematis 'Madame Julia Correvon'

    Enduring colour.
     

  • Viticella Clematis 'Polish Spirit'

    That's the spirit.
     

  • Dowdeswell Delphinium 'Double Innocence'

    Extraordinary elegance.
     

  • Dowdeswell Delphinium 'Green Twist'

    Twist and shout.
     

  • Dahlia Mystic 'Haze'

    Tropical tones and midnight foliage.
     

  • Dahlia Dahlegria 'Pink Halo'

    New in 2024.
     

  • Double Winter Rose 'Rumba Rose'

    Ravishing, rose red petals.
     

  • Lilium 'Purple Marble'

    Stunning colour.
     

  • LA Lilium 'Forza Red'

    Luscious lilies.
     

  • LA Lilium 'Indian Summerset'

    Watermelon wonders.
     

  • African Daisy 'Blue Eyed Beauty'

    A knockout.
     

  • African Daisy Zion 'Purple Sun'

    Neon petals.
     

  • Peony 'Duchesse de Nemours'

    Up there with the best.
     

  • Peony 'Red Charm'

    Absolutely charming.
     

  • Aquilegia Swan Series 'Montana'

    Flowers galore and a whole lot more.
     

  • Marguerite Daisy Sassy 'Red'

    Great for picking.
     

  • Marguerite Daisy Sassy 'Pink'

    Quick and easy.
     

  • Viticella Clematis 'Aotearoa'

    Rich and rewarding.
     

  • Dowdeswell Delphinium 'Cobalt Dreams'

    The stuff of dreams.
     

  • Dowdeswell Delphinium 'Dusky Maidens'

    Marvellous maidens.
     

  • Dowdeswell Delphinium 'Purple Passion'

    Flowers to get passionate about.
     

  • Dahlia Dahlegria 'Magenta Bicolour'

    New in 2024.
     

  • Dahlia Mystic 'Illusion'

    Golden blooms and ebony foliage.
     

  • Dahlia Happy Days 'Orange Red Bicolour'

    A magical combination.
     

  • Reblooming Daylily 'Bettylen'

    An amazing performer.
     

  • Reblooming Daylily 'My Reggae Tiger'

    Grrrrreat!
     

  • Euphorbia 'Blackbird'

    Midnight foliage.
     

  • Euphorbia Silver Swan 'Wilcott'

    Fabulous foliage.
     

  • Fuchsia 'Deep Purple'

    Sensational colour.
     

  • Fuchsia 'Sir Matt Busby'

    Glory flowers.
     

  • Double Winter Rose 'Provocateur'

    Prolific bloomers.
     

  • Double Winter Rose 'Sheila Mary'

    Glamorous in green.
     

  • Winter Rose 'Shades of Grey'

    Dark and mysterious.
     

  • Hydrangea 'Pink-Blue Sunset'

    Spoiled for colour choice.
     

  • Lilium 'Pearl White'

    A pearler.
     

  • LA Lilium 'Eyeliner'

    Eye catching.
     

  • LA Lilium 'Nashville'

    Summer sunshine.
     

  • Oriental Lilium 'Corvette'

    A love that's gonna last.
     

  • African Daisy 'Serenity Red'

    Simple and sensational.
     

  • Salvia 'Purple and Bloom'

    Quick and easy.
     

  • Salvia 'Oceana Blue'

    Azure allure.
     

  • Aquilegia Swan Series 'Virginia'

    Floral abundance.
     

  • Marguerite Daisy 'Comet Pink'

    Flower power at its best.
     

  • Marguerite Daisy Angelic 'Giant Pink'

    Pretty in pink.
     

  • Marguerite Daisy 'Angelic 'Maize'

    Easy and enduring.
     

  • Marguerite Daisy Angelic 'Ruby'

    A heavy bloomer.
     

  • Marguerite Daisy Angelic 'Snow'

    Naturally well branched and easy growing.
     

  • Marguerite Daisy Angelic 'Sweets'

    Colour changing blooms.
     

  • Biden Namid 'Compact Yellow'

    Compact and floriferous.
     

  • Dahlia Mystic 'Sparkler'

    Hot pink petals with mahogany foliage.
     

  • Reblooming Daylily 'Berrylicious'

    An abundant bloomer.
     

  • Reblooming Daylily 'Excellent'

    Most excellent.
     

  • Reblooming Daylily 'Storm of the Century'

    Dark and stormy.
     

  • Euphorbia 'Ascot Rainbow'

    Sing a rainbow.
     

  • Erigeron 'Spindrift'

    Quick and compact.
     

  • Winter Rose 'White Perpetual'

    Elegant simplicity.
     

  • Lilium 'Pearl Melanie'

    Luminous and voluminous.
     

  • Oriental Lilium 'Resolute'

    Petals of substance.
     

  • Cat Mint 'Six Hills Giant'

    One of the best.
     

  • African Daisy Serenity 'Coral Magic'

    How's the serenity?!
     

  • African Daisy FlowerPower 'Spider Pink'

    Easy colour.
     

  • African Daisy Voltage 'Gold'

    A little ray of sunshine.
     

  • Peony 'Cheddar Supreme'

    Supreme beauties.
     

  • Rose 'Coconut Ice'

    Something sweet.
     

  • Rose 'Fairytale Magic'

    An enchantress.
     

  • Rose 'Fruity Parfuma'

    Ambrosial blooms.
     

  • Rose 'Heaven On Earth'

    Angelic with rosehips!
     

  • Rose 'Raspberry Cupcake'

    Old world charm with wonderful perfume.
     

  • Salvia 'Black and Bloom'

    Tough as old boots.
     

  • Leucanthemum 'Victorian Secret'

    Compact and free flowering.

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