AHS Registration:
* DIAMETER OF FLOWER IN INCHES AS NATURALLY STANDING
Imagine a wire circle that is just large enough for the flower to pass through without touching. The diameter of the circle in inches will be the diameter of the flower. If you prefer, use a ruler and measure from tip to tip at the widest point and this will be the diameter. The main thing to remember is to measure as naturally standing - do not uncurl recurved flowers for the measurement. The second thing to remember in recording this measurement is that a flower will be classed as miniature (i.e., less than 3 inches), small (3 inches to 4-1/2 inches), large (4-1/2 inches or more), and extra-large (7" and greater) according to the registered diameter. For instructions on measuring Spider daylilies, see the discussion under "FORM".
https://www.daylilies.org/Dayl...