Jim and Jim: When I visited Argentina, I was fascinated to see tropical trees growing alongside Zone 5 trees. The key is the temperature at which winter chilling is effective for the cold-requiring species. It seems that some plants actually get adequate winter chilling if there are enough hours between 40 and 45 degrees F. This is what allows plants with seemingly opposite temperature requirements to be happy together in climates that never freeze. I suspect there may be something similar at work with the bulbs. Tony Avent Plant Delights Nursery @ Juniper Level Botanic Garden 9241 Sauls Road Raleigh, North Carolina 27603 USA Minimum Winter Temps 0-5 F Maximum Summer Temps 95-105F USDA Hardiness Zone 7b email tony@plantdelights.com website http://www.plantdelights.com/ phone 919 772-4794 fax 919 772-4752 "I consider every plant hardy until I have killed it myself...at least three times" - Avent J.E. Shields wrote: > Jim McK, > > You're right, I had completely forgotten that discussion; and it does > seriously puzzle me, too. > > Jim Shields > > > At 11:07 AM 12/14/2007 -0500, you wrote: > >> Jim Shields and others: you might want to go back and re-read the postings >> > >from Lauw Dejager and myself on this topic. Lauw lives in an area which > >> allows him to have both Phoenix canariensis (a date palm which in east coast >> of North America terms is a zone 9 plant) and flourishing, flowering Lycoris >> squamigera. >> >> There is a puzzle here I don't understand. >> >> Jim McKenney >> > > 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 > > > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://www.pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/ > >