HP.B2.1 General
general - circumference grades
The main specification for bulbs and corms is circumference in cms.
The circumference, is defined as "the largest circumference of the bulb, corm or tuber when measured perpendicularly to the axis of the stem after having been lifted and air dried."
Standards have been determined, indicating a minimum circumference, and larger grades, which are to be expected in cultivation. It is anticipated that bulbs, corms and rhizomes of these measures would flower in their first season planted in open ground.