I grow all three. I have rosthornii. It is very similar to henryi except for a few morphplogical features and the odd growth habit. Mine grow to a certain height and rest until mid-summer(now) and start to grow again. It is now growing taller and showing buds. It normally does not get much taller than 1m when it flowers. Normal bloom time is early September. And, best of all, it is delightfully fragrant, like Tiarella. My yellow henryi came from MOBOT and bloomed this year for the first time(all from a few bulbs scales originally) Unfortunatetly, I missed the open flowers. The buds though were a nice yellow. Strait henryi is a great species. It may lean, no matter how much sun is given, but it is a great plant and easy!! In bad climates it is one of the best lilies. At least it doesn't produce bulbils. I saw it featured years ago on PBS's Victory Garden; the plant was 2.5m tall held up by wires to keep it from leaning. My form always blooms at about 1m. Does anyone grow taller forms? What is really exceptional, or was last week, were the trumpets Lilies from China that bloom at 7ft. tall and 13 trumpets at the top! And highly fragrant. All the best, Aaron Z5 Kansas __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com/