On Thu, 21 Jan 1999 MAllen4543@aol.com wrote: > In a message dated 1/20/99 10:39:15 PM GMT, kay@fern.com writes: > > << And if you want to grow them, keep > the day length shorter than about 14 hours... they won't make tubers > at day lengths much longer than that. >> > > Oh Kay, you do make life difficult for us, how does one shorten days? I can > just see myself at the height of summer running out with blackout material and > popping it over the plants :-) Mary. Always glad to be difficult. ;-) As I recall, the only way I could get it to flower in southern California was to plant it under a streetlight. And the only way I could get it to make tubers in a greenhouse in Iowa was to take it out from under the 18 hr/day HID lights. "Under the most carefully controlled conditions, plants do what they d*** well please" (botanical corollary to Murphy's law) Kay Lancaster kay@fern.com