Bill Carter, Washington

How do you measure the size of a bloom?

March 10, 2015

Categories: General, Shows

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Daffseek show flower dimensions as mm.  What is the proper to measure a bloom.  I’m guessing the widest tip to tip of the Perianth?

2 responses to “How do you measure the size of a bloom?”

  1. Stephen Vinisky, Oregon Stephen Vinisky, Oregon says:

    Hi Bill,

    Yes, perianth tip to perianth tip. I use the longest opposing petals. Base of corona to corona mouth. Also explained on the RHS Registration form.

    The RHS Daffodil Registration form asks for perianth and corona/trumpet measurements in millimeters. I comply with their request. Seems easier to me now to record annual measurements for Selections in millimeters. I do usually convert the measurements to inches in photos for the convenience of those that are not familiar with metric.

    I use a Micrometer to measure both perianth and corona. I find the use of this tool extremely precise. My practice has been to measure 5-10 blooms and use an average. Photo below is of the micrometer that I use daily. Available in any larger hardware stores including “big box” hardware stores.


    [caption attachment_id="129288" align="alignleft" width="120"]Micrometer[/caption]

  2. Ben Blake, California Ben Blake, California says:

    Steve,  you discovered a bug in the “Add Media” feature of the Daffnet comments panel labeled “Please enter your comments here” where added media had a permission problem.

    For now I had to disable this “Add Media” button on comments.  This feature has been enabled since Dec 2014 and you are the first to try it, so disabling it should have little impact on others.