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Did you know that the dahlia is the national flower of Mexico?
This is no surprise as the accepted origin of the Dahlia is from the
South American peninsula. Dahlia's come in a variety of
colors, shapes and sizes. The following sections will cover the
keywords used throughout this site to describe the individual flowers
- Glossary of Terms
We also have the "ADS Guide to
Growing and Caring for Dahlias" from the American Dahlia Society
10 inches in diameter.
8 to 10 inches in diameter.
6 to 8 inches in diameter.
4 to 6 inches in diameter.
up to 4 inches in diameter.
3.5 inches in diameter.
Ball), over 2 to 3.5 in. in dia.
to 2 inches in diameter.
up to 2 inches in diameter.
||Novelty Open Center
||Novelty Double Center
- blooms with two distinctly clear and sharply separated colors
Blend - a blending of the lighter tints and tones of pink, yellow,
lavender, and other pastels
- where two or more colors appear on the face of the bloom either
in dots, splashes, stripes on narrow lines
- Two or more colors which gradually merge but are distinguishable
from a distance of six feet.
- CENTRAL RAYS
- The short immature ray florets comprising the central portion of
the fully double flowers when at their prime stage.
- A more or less flat, circular group of tubular florets fully visible
in open-centered type Dahlias.
- DISC FLORETS
- Small tubular florets which make up the central part of the flower
head, each with a pistil and stamens but generally no other conspicuous
- Dahlia varieties which normally do not produce plant growth over
24 inches in height.
- The split or fimbriation should be in proportion to ray floret length,
and be no less than 1/6 of ray floret length, there should be a twisting
in the area of the split involute or revolute ray florets, to give
an overall fringed effect.
- One of the small flowers which collectively comprise the flower
- FULLY DOUBLE
- Flower heads with multiple rows of ray florets; the disc florets
are immature and completely covered by the central rays when the flower
is at its prime stage.
- The ray florets curve forward along their length toward the face
of the flower head.
- Margins of the ray florets roll forward along their longitudinal
axis. When fully involute the margins touch or overlap so only the
reverse of the floret is visible.
- The edge of the ray floret and the area adjacent.
- MARGINAL RAYS
- Fully developed ray florets which establish and determine the maximum
diameter of a flower, as distinguished from the immature central rays.
- The common name for the conspicuously colored part of a floret.
- Additional floral parts on ray florets having the form and appearance
of smaller petals. Most noticeable in the Collarette Dahlias.
- RAY FLORET
- One of the broad, conspicuously colored florets, the structure of
which suggests a single petal of an ordinary flower. These form the
radiating border in the open-centered type dahlias, or massed together,
the flower head in fully double types.
- The ray florets curve backward along their length toward the stem.
- Margins of the ray floret roll backward along their longitudinal
axis. When fully revolute, the margins touch or overlap.
- The ray florets have little or no curvature throughout their length.
(The above system of classification was paraphrased from the ADS
1997 Classification and Handbook of Dahlias.)