Dahlia Size & Classification Codes

SIZE  CODE

AA
over 10″ or more

A
8″ to 10″ or more

B
6″ to 8″ across

BB
4″ to 6″ across

M
up to 4″ across

P
up to 2″ across

 

CLASSIFICATION  CODE

AN – ANEMONE

One or more rows of flat petals surrounding a dense group of colored, elongated disc florets.

BA – BALL

Fully double flowers, ball shaped or slightly flattened at the face, the ray florets blunt, rounded or indented.

C – STRAIGHT CACTUS

Petals rolled for one-half their length, with straightor nearly straight.

CO – COLLARETTE

One row of flat or slightly cupped petals surrounding a disc. These flowers have an inner set of petaloids generally multiple and irregular forming a collar around the disc.

FD  – FORMAL DECORATIVE

Flat petals with an even, regular placement throughout the flowers.

IC – INCURVED  CACTUS

Petals rolled for their full length, with tips of the petals curving toward the center of the flower.

ID – INFORMAL DECORATIVE

Generally flat petals sometimes slightly rolled at the tips, but with regular arrangement of formation.

LC -LANCINATED .

The petals or ray florets are split at the tips to give an overall fringed effect.

P – POM PON

Fully double flowers almost round in shape with tightly quilled petals.

S – SINGLE

Single row of flat petals surrounding a disc.

SC – SEMI-CACTUS

Petals flat at the base, with less than half of the petals rolled or quilled.

ST – STELLAR

Decorative shaped flowers with petals being creased causing them to be narrow and involuted with a single recurve to the stem.

WL – WATERLILY

Closed center with multiple rows of ray florets normally broad and flat or slightly incurved, depth usually less than one half the diameter.

Source – The American Dahlia Society (ADS)

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