Good call, 26 cm (10 inches) in circumference! I don't think I have ever seen a 10 inch diameter A. belladonna bulb although some Amaryllis hybrid bulbs can easily get over 15 cm (6 inches) in diameter. Nathan At 05:58 PM 6/13/2015, you wrote: >Nathan wrote: "Second, bulb size. Like all >bulbous plants, there is a minimum bulb size >required for flowering. The minimum bulb size >for A. belladonna to flower has been reported >to be 26 cm (10 inches) but this seems very >large and likely varies with growing >conditions. " Nathan, is that 10 inches in >diameter or circumference? I know these bulbs >can be big; do they ever reach 10 inches in >diameter? Jim McKenneyMontgomery County, >Maryland, USA, USDA zone 7 and in my experience >not Amaryllis belladonna >country. >_______________________________________________ >pbs mailing list pbs@lists.ibiblio.org >http://pacificbulbsociety.org/list.php http://pacificbulbsociety.org/pbswiki/