• Bloom – A (7)Dahlia Bloom Size - A, Large, over 8 to 10 inches in diameter
  • Bloom – AA (9)Dahlia Bloom Size - AA, Giant, over 10 inches in diameter
  • Bloom – B (47)Dahlia Bloom Size - B, Medium, over 6 to 8 inches in diameter
  • Bloom – BA (13)Dahlia Bloom Size - BA, Ball, over 3.5 inches in diameter
  • Bloom – BB (165)Dahlia Bloom Size - BB, Small, over 4 to 6 inches in diameter
  • Bloom – M (65)Dahlia Bloom Size - M, Miniature, up to 4 inches in diameter
  • Bloom – MB (17)Dahlia Bloom Size - MB, Miniature Ball, over 2 to 3.5 in. in diameter
  • Bloom – MS (2)Dahlia Bloom Size - MS, Mignon Single, up to 2 inches in diameter
  • Bloom – P (3)Dahlia Bloom Size - P, Pompon, up to 2 inches in diameter
  • Form – AN (1)Dahlia Bloom Form - AN, Anemone-flowered - One or more rows of petals surrounding a dense group of colored, elongated disc florets.
  • Form – BA (27)Dahlia Bloom Form - BA, Ball - Fully double flowers, ball-shaped or slightly flattened at the face, the ray florets blunt, rounded, or indented. Involute for most of their length, fully involute for about one-half their length, and normally displayed in a spiral arrangement.
  • Form – C (6)Dahlia Bloom Form - C, Straight Cactus - Petals rolled for one-half their length, straight or nearly straight.
  • Form – CO (4)Dahlia Bloom Form - CO,Collarette - One row of flat or slightly cupped petals surrounding a disc. These flowers have an inner set of petaloid generally multiple and irregular forming a collar around the disc.
  • Form – FD (117)Dahlia Bloom Form - FD, Formal Decorative - Flat petals with an even, regular placement throughout the flowers.
  • Form – IC (2)Dahlia Bloom Form - IC, Incurved Cactus - Petals rolled for their full length, with tips of the petals curving toward the center of the flower.
  • Form – ID (57)Dahlia Bloom Form - ID, Informal Decorative - Generally flat petals, sometimes slightly rolled at the tips, but with irregular arrangement of formation.
  • Form – LC (16)Dahlia Bloom Form - LC, Laciniated Ray florets exhibit a split at their tips, with the quantity and depth of these splits differing based on the size of the ray floret. The section of the ray floret that contains the splits should consistently twist or curl, regardless of whether it is involute or revolute.
  • Form – MB (17)Dahlia Bloom Form - MB, Miniature Ball Miniature ball and ball dahlias share identical form characteristics, with the exception of their size.
  • Form – MS (1)Dahlia Bloom Form - MS, Mignon Single
  • Form – NO (1)Dahlia Bloom Form - NO, Novelty Open
  • Form – NX (3)Dahlia Bloom Form - NX, Novelty Fully Double
  • Form – P (3)Dahlia Bloom Form - P, Pompon - Fully double flowers almost round in shape with tightly quilled petals. Flower size 2" or less.
  • Form – PE (3)Dahlia Bloom Form - PE, Peony-flowering - Open-centered flowers with two or more rows of petals surrounding a disc. Petals may be irregularly formed.
  • Form – SC (25)Dahlia Bloom Form - SC, Semi-Cactus - Petals flat at the base, with less than half of the petals, rolled or quilled.
  • Form – ST (17)Dahlia Bloom Form - ST, Stellar - Decorative-shaped flowers with petals being creased causing them to be narrow and involute with a slight recurve to the stem.
  • Form – WL (28)Dahlia Bloom Form - WL, Water Lily - Exhibits fully double / symmetrical structure. When viewed from the side, it should present a flat to saucer-like shape, with layers of florets arranged in open-faced creating a delicate look. The center should be closed / dome-shaped, transitioning gradually into four to seven rows of fully developed outer florets that are wide and slightly cupped, featuring rounded tips.