NORTHWEST COSMOS Group 1--Single-flowered DahliasSingle dahlias have blooms with a single outer ring of florets, which may overlap, the centre forming a disc |
STILLWATER PEARL Group 2--Anemone-flowered Dahlias Anemone-flowered dahlias have blooms with one or more outer rings of generally flattened ray florets surrounding a dense group of tubular florets, and showing no disc. 5 Top |
TEESBROOKE REDEYE Group 3--Collerette DahliasCollerette dahlias have blooms with a single outer ring of generally flat ray florets, which may overlap, with a ring of small florets (the Collar) the centre forming a disc. |
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BISHOP OF LLANDAFF Group 4 – Paeony Dahlias or Peony Dahlias Peony dahlias have multiple outer rings of ray florets surrounding a disc, ray florets are flat or slightly involute at base and are flat or are to some extent revolute |
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JOMANDA Group 6--Ball Dahlias Ball dahlias have fully double blooms showing no disc, ball shaped or slightly flattened. The ray florets are displayed in spiral arrangement and are involute and round at the apex. |
PINK CAROL Group 7--Pompon DahliasPompon dahlias have fully double spherical blooms of miniature size, with florets largely involute along their length (longitudinal axis). |
TRELYN KIWI Group 8--Cactus Dahlias Cactus dahlias have fully double blooms, the ray florets are usually pointed, the majority narrow and revolute for 50% or more of their length (longitudinal axis) and either straight or incurving.
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HAPPY BOY Group 9--Semi-Cactus DahliasSemi-Cactus dahlias have fully double blooms; the ray florets are usually pointed and revolute for more than 25% of their length and broad at the base and either straight or incurving. |
 MISCELLANEOUS DAHLIAS Group 10--Miscellaneous Dahlias Any dahlias which do not fall into one of the foregoing Groups e.g. Thistle Dahlias |
INTOMBI YUM Group 11- FIMBRIATED DAHLIASFimbriated dahlias have blooms where ray florets should be evenly split or notched into two or more divisions, uniformly throughout the bloom to create a fringed overall effect. The petals may be flat, involute, revolute, straight, incurving or twisted. |
 TAHOMA HOPE Group 12 –Single Orchid Dahlias (Star)Star or Single Orchid dahlias have blooms with a single outer ring of florets surrounding disc. Ray florets are uniformly either involute or revolute. |
 PINK GIRAFFE Group 13 – Double Orchid DahliasDouble Orchid dahlias have fully double blooms showing no disc that have triangularis centres. Ray florets are narrowly laceolate and either involute or revolute. |
 SHEP'S MEMORY Group 14--Waterlily Dahlias Waterlily dahlias have fully double blooms characterised by broad and generally sparse ray florets, which are straight or slightly involute along their length giving the flower a shallow appearance. The depth should be less than half the diameter of the bloom. |
 B.J.BEAUTY Group 15 - Informal Flowered Decorative DahliasInformal flowered decorative dahlias are fully double blooms, whose ray florets are either flat or slightly involute at the base and revolute or twisted revolute at the apex.
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 FRANZ KAFKA Group 16 – Large Pompon DahliasPompon dahlias have fully double spherical blooms of miniature size ( Less than 83mm but greater than 52mm.) , with florets largely involute along their length (longitudinal axis).
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