Hi Dell, If there were not so much snow between me and the other greenhouse, I'd go back and measure that aulicum bulb for you. However, I'll have to make do with a memory guesstimate: diameter over 2 inches (50 mm) so circumference at least 150 mm (6 inches), probably more. Could be diameter as much as 2.5 inches, circumference as much as 200 mm for bloom size. My bloom size bulb (plus offsets) is growing in about a 10-inch pot. I grow almost everything, including this, in my gritty mix: Promix HP Biofungicide + sand + granite chick starter grit in ratio of 2 : 1 : 1 by volume. For general watering and fertilizing, see Bulb Notes, current issue; it's with the Clivia. Jim S. At 01:52 PM 2/6/2010 -0500, you wrote: >Dear Jim, > >I have killed a number of H. aulicum bulbs. So I am now trying one in >Hydroton (little balls of fired, unglazed terra cotta) with the original >rootball in the organic medium that nurtured it when it was a child. It >increases in size slowly and offsets a lot. How big are these plants when >they are mature? Mine is similar in size to H. flammigerum (H. striatum >petiolatum?). > >Dell > ************************************************* Jim Shields USDA Zone 5 Shields Gardens, Ltd. P.O. Box 92 WWW: http://www.shieldsgardens.com/ Westfield, Indiana 46074, USA Tel. ++1-317-867-3344 or toll-free 1-866-449-3344 in USA