Silverhill had Pillansia templemannii for sale, so I couldn't resist ordering some seeds. Now they've sprouted, and so far they look happy (and they tolerated 22F last week just fine). But the only cultivation advice I can find is the note on the PBS website: "Does not respond well to cultivation." Anyone have any advice on what to try? Or insights on what *not* to try? Thanks, Mike San Jose, CA