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.

  • Digtalis Foxlight Ruby Glow

    A glowing recommendation.

     
  • Delbard Dahlia French Watermelon

    Chic blooms.

     
  • Dahlia Black Macopa

    Deepest burgundy.

     
  • Dahlia Croles

    A beautifully blended bloom.

     
  • Aquilegia Double Pleat Blackberry

    Loved for generations.

     
  • Corydalis Porcelain Blue

    Ethereal beauty.

     
  • Dahlia Sweet Heart

    Total sweethearts.

     
  • Clematis Hybrid Diamantina (Evipo039)

    A repeat performer.

     
  • Dahlia Samoan Prince

    A prince among blooms.

     
  • Dahlia Goddess

    A garden deity.

     
  • Winter Rose Princess Buttercup

    As you wish.

     
  • Ivy Geranium 'Great Balls of Fire' Burgundy Blaze

    A generous geranium.

     
  • Tuberous Begonia - AmeriHybrid Picotee Sunburst

    New in 2020.

     
  • Dahlia Tiger Bay

    Playful petals.

     
  • Dahlia Tartan

    Super sized flowers.

     
  • African Daisy Margarita Purple Spoon

    New in 2020.

     
  • Clematis Viticella Avant-Garde (Evipo033)

    Grow something extraordinary.

     
  • Highlander Delphinium Bolero

    Dense, lasting flower spikes.

     
  • Dahlia Black Wonder

    Dark and mysterious.

     
  • Aquilegia Chocolate Soldier

    An heirloom variety with sweet blooms.

    Only 5 remaining
     
  • Dahlia Candy

    XL flowers.

     
  • Delbard Dahlia Zenith

    A peak performer.

     
  • Dahlia Jacqueline

    Wild petals.

     
  • Clematis Hybrid Will Goodwin

    New in 2020.

     
  • Lilium Anastasia

    Up to 25 blooms.

     
  • African Daisy Margarita Pink Flare

    New in 2020.

     
  • Oriental Lilies Rio Negro

    Opulent colour and perfume.

     
  • African Daisy Margarita Blue Sunrise

    Chameleon petals.

     
  • Salvia Black and Bloom

    Tough as old boots.

     
  • Delbard Dahlia Versailles

    A palatial bloom.

     
  • Clematis Viticella Purpurea Plena Elegans

    New in 2020.

    Only 12 remaining
     
  • Dahlia Oberon

    Bigger is better!

     
  • Clematis Pauline

    Easy and vigorous.

     
  • Dahlia India

    Pretty and profuse.

     
  • African Daisy Margarita White Spoon

    New in 2020.

     
  • Coreopsis Cherry Pie

    A living bunch of flowers.

     
  • Gladioli Sugar Plum

    New in 2020.

     
  • Ivy Geranium 'Great Balls of Fire' White

    Big floral balls.

     
  • Lilium Lady Alice

    Style and grace.

     
  • Calla Lilies Romeo

    Wherefore art thou?

     
  • Coreopsis Pineapple Pie

    Bicolour blooms in abundance.

     
  • Dahlia Sir Alf Ramsay

    New in 2020.

     
  • Petunia SuperCal Artist Rose

    Non stop colour across the seasons.

     
  • Dahlia Gambier Jane

    Eye popping beauty.

     
  • Dahlia Tuscany

    Petals of sunshine.

     
  • Dahlia Kashmir

    Striking colour.

     
  • Matisse Oriental Lilies Mixed

    A standout blend of colour and fragrance.

     
  • Calla Lilies Hot Cherry

    Hot colour.

     
  • Dahlia Red Alert

    New in 2020.

     
  • LA Lilies Mixed

    Tesselaar's choice.

     
  • Perennial Petunia Surprise White Orchid

    New in 2020.

     
  • Delbard Dahlia Mont Blanc

    Luxurious blooms.

     
  • Dowdeswell Delphinium Pagan Purples

    Vertical interest.

     
  • Coreopsis Heliot

    A champion flowerer.

     
  • Foxglove Pam's Choice

    Choice blooms.

     
  • Oriental Lilies Marlon

    Big and fragrant.

     
  • Tuberous Begonia - AmeriHybrids Collection

    Bigger is better.

     
  • Lilium Silk Road

    Enticing petals and perfume.

     
  • Petunia SuperCal Bordeaux

    Incredibly long blooming.

     
  • Calla Lilies Crystal Blush

    Blushing beauties.

     
  • Lilium Eastern Moon

    New in 2020.

     
  • Petunia Supercal Sunray Pink

    New in 2020.

     
  • Marguerite Daisy Angelic Baby Pink

    Long blooming.

     
  • Highlander Delphinium Flamenco

    One of the best.

     
  • Coreopsis Desert Coral

    Bright and bountiful.

     
  • Lilium African Lady

    Big and bold.

     
  • Gladioli Mojito

    New in 2020.

     
  • Petunia Supercal Snowberry White

    New in 2020.

     
  • Ivy Geranium 'Great Balls of Fire' Blue

    Long flowering.

     
  • Lilium Black Beauty

    The wow factor.

     
  • Clematis Viticella Prince Charles

    Floral abundance.

     
  • Delbard Dahlia Pondicherry

    A decorative Delbard.

     
  • Perennial Petunia Surprise Burgundy Star

    New in 2020.

    Only 9 remaining
     
  • Perennial Petunia Sweetunia Starfish

    New in 2020.

     
  • Delbard Dahlia Soleil Couchant

    Sunset shades.

     
  • Oriental Lilium Bacardi

    Pretty and perfumed.

     
  • Gladioli Flevo Eskimo

    New in 2020.

     
  • Tuberous Begonia - AmeriHybrid Jacque

    New in 2020.

     
  • Lily Kushi Maya

    Strong and sweet.

     
  • Ivy Geranium 'Great Balls of Fire' Dark Red

    Dark and dramatic.

     
  • Tuberous Begonia - AmeriHybrid Kapas

    Highly decorative, lacy blooms.

     
  • Winter Rose Shades of Grey

    Dark and mysterious.

     
  • Aquilegia Swan Series Collection

    Cottage garden essentials.

     
  • Perennial Petunia Miss Marvelous

    New in 2020.

     
  • Oriental Lilies Premium Blonde

    Premium blooms.

     
  • Ivy Geranium 'Great Balls of Fire' Hot Pink

    Bred for heat.

     
  • Tuberous Begonia - AmeriHybrid Baikal

    Antique white ruffled blooms to 20cm.

     
  • Delbard Dahlia Cheverney

    Months of flowers.

     
  • Perennial Petunia Amore 'Queen of Hearts'

    Heart warming.

    Only 3 remaining
     
  • Tuberous Begonia - AmeriHybrid Picotee Flamenco

    New in 2020.

     
  • Calla Lilies Hot Chocolate

    Delectable in gardens or pots.

     
  • Clematis Hybrid Barbarra Harrington

    New in 2020.

     
  • Clematis Viticella Etoile Violette

    A winner.

     
  • Aquilegia Swan Series Colorado

    A cottage sweetheart.

     
  • Aquilegia Swan Series Virginia

    Abundant flowers.

     
  • Dowdeswell Delphinium Green Twist

    New in 2020.

     
  • Dahlia Formby Empress

    Sensational colour.

     
  • Aquilegia Swan Series Louisiana

    Prolific blooms.

     
  • Calliope Geranium 'Big Series' Big Splash

    Make a splash.

     
  • Oriental Lilies Pink Palace

    New in 2020.

     
  • Calliope Geranium 'Big Series' Collection

    Strong and enduring.

     
  • African Daisies (reduced) Collection

    Tough and free flowering.

     
  • Oriental Lilies Zambesi

    Great staying power.

     
  • Aquilegia Swan Series Georgia

    Great garden performers.

     
  • Lilium Beverly Dreams

    The stuff of dreams.

     
  • Gladioli Eminence

    A strong choice.

     
  • LA Lilies Eyeliner

    Eye catching.

     
  • Calliope Geranium 'Big Series' Big Rose

    Iridescent colour.

     
  • Ivy Geranium 'Great Balls of Fire' Merlot Ivy

    A rock'n choice.

     
  • Tuberous Begonia - AmeriHybrid Arizona Sky

    Superior breeding.

     
  • Tuberous Begonia - AmeriHybrids Mixed

    Shady sensations.

     
  • Aquilegia Swan Series Montana

    Flowers galore!

     
  • Gladioli Chocolate

    Chocolate sensations.

     
  • Perennial Petunia Amore 'King of Spades'

    Colour in spades.

     
  • Coreopsis (reduced) Collection

    Floral abundance.

     
  • Tuberous Begonia - AmeriHybrid Cape Coral

    Layers of luminous petals.

     
  • Tuberous Begonia - AmeriHybrid Texas

    Big, bold blooms.

     
  • Perennial Petunia Hotlips

    Three seasons of blooms.

     
  • LA Lilies Nashville

    Summer sunshine.

     
  • LA Lilies Collection

    A vibrant collection.

     
  • LA Lilies Honesty

    Clear colour.

     
  • LA Lilies Forza Red

    Luscious lilies.

     
  • LA Lilies Stratosphere

    Out of this world.

     
  • Matisse Oriental Lilium Collection

    Can't decide?

     
  • Calliope Geranium 'Big Series' Big Red

    Award winning.

     
  • Clematis Viticella Margot Koster

    Flowers galore.

     
  • Ivy Geranium 'Great Balls of Fire' (reduced) Collection

    Fantastic in pots or hanging baskets.

     
  • Petunia SuperCal (reduced) Collection

    Colourful and versatile.

     
  • African Daisies (reduced) Collection

    Tough and free flowering.

     
  • Perennial Petunias (reduced) Collection

    Easy colour.

    Only 3 remaining
     
  • Dahlias Cornflake

    Delectable colour.

    This product is currently out of stock and unavailable.

  • Salvia Lara

    Vigorous and long flowering.

    This product is currently out of stock and unavailable.

  • Coreopsis Fruit Punch

    Packs a punch.

    This product is currently out of stock and unavailable.

  • African Daisy Serenity Coral Magic

    New in 2020.

    This product is currently out of stock and unavailable.

  • Agastache Sweet Lili

    Dry tolerant, free flowering.

    This product is currently out of stock and unavailable.

  • Agastache Blue Boa

    Award winning.

    This product is currently out of stock and unavailable.

  • Ivy Geranium 'Great Balls of Fire' Oh So Orange

    New in 2020.

    This product is currently out of stock and unavailable.

  • Chatham Islands Forget-Me-Not

    A handsome choice for shade.

    This product is currently out of stock and unavailable.

  • Foliage Dahlia Bishop of Llandaff

    One of the best.

    This product is currently out of stock and unavailable.

  • Winter Rose Fairy Kristabelle

    New in 2020.

    This product is currently out of stock and unavailable.

  • Clematis Hybrid Belle of Taranaki

    New in 2020.

    This product is currently out of stock and unavailable.

  • Dowdeswell Delphinium Cobalt Dreams

    The stuff of dreams.

    This product is currently out of stock and unavailable.

  • Clematis Hybrid Josephine Evijohill

    Big and blousy.

    This product is currently out of stock and unavailable.

  • Dowdeswell Delphinium Black Eyed Angels

    Angels in the garden.

    This product is currently out of stock and unavailable.

  • Dowdeswell Delphinium Sweethearts

    Garden sweethearts.

    This product is currently out of stock and unavailable.

  • Salvia Oceana Blue

    New in 2020.

    This product is currently out of stock and unavailable.

  • Foxglove Café Crème

    New in 2020.

    This product is currently out of stock and unavailable.

  • Highlander Delphinium Sweet Sensation

    New in 2020.

    This product is currently out of stock and unavailable.

  • Salvia Purple and Bloom

    New in 2020.

    This product is currently out of stock and unavailable.

  • Foxglove Sugar Plum

    New in 2020.

    This product is currently out of stock and unavailable.

  • Dowdeswell Delphinium Double Innocence

    Extraordinary elegance.

    This product is currently out of stock and unavailable.

  • Calla Lilies Purple Heart

    Dark and moody.

    This product is currently out of stock and unavailable.

  • Marguerite Daisy Sassy Medium White

    Classic beauty.

    This product is currently out of stock and unavailable.

  • Perennial Petunia Night Sky

    Shoot for the stars.

    This product is currently out of stock and unavailable.

  • Coreopsis Collection

    Floral abundance.

    This product is currently out of stock and unavailable.

  • African Daisies Collection

    Tough and free flowering.

    This product is currently out of stock and unavailable.

  • Petunia SuperCal Collection

    Colourful and versatile.

    This product is currently out of stock and unavailable.

  • Dahlia 'Eye Popping' Collection

    All about colour.

    This product is currently out of stock and unavailable.

  • Ivy Geranium 'Great Balls of Fire' Collection

    Fantastic in pots or hanging baskets.

    This product is currently out of stock and unavailable.

  • Winter Rose Ice Maiden

    New in 2020.

    This product is currently out of stock and unavailable.

  • Double Winter Rose White Ruffles

    Impressive in shade.

    This product is currently out of stock and unavailable.

  • Petunia Supercal Lavender Star

    New in 2020.

    This product is currently out of stock and unavailable.

  • Dowdeswell Delphinium Purple Passion

    Flowers to get passionate about.

    This product is currently out of stock and unavailable.

  • Dowdeswell Delphiniums Collection

    Absolute charmers.

    This product is currently out of stock and unavailable.

  • Perennial Petunias Collection

    Easy colour.

    This product is currently out of stock and unavailable.

  • Dowdeswell Delphiniums Mixed

    Old world charm.

    This product is currently out of stock and unavailable.

  • Dowdeswell Delphiniums (reduced) Collection

    Absolute charmers.

    This product is currently out of stock and unavailable.

  • Dowdeswell Delphiniums (reduced) Collection

    Absolute charmers.

    This product is currently out of stock and unavailable.

  • Dowdeswell Delphiniums (reduced) Collection

    Absolute charmers.

    This product is currently out of stock and unavailable.

  • Dowdeswell Delphiniums (reduced) Collection

    Absolute charmers.

    This product is currently out of stock and unavailable.