Unlike all the other Tigridias you list (which I think are from Mexico), T. philippiana is from Chile. And unlike the others, which are summer growing/winter dormant, T. philippiana (and Chile in general) is one of the world's 5 mediterranean regions where the plants are for the most part winter growing/summer dormant. If you're in the northern hemisphere, then I'm not surprised they went dormant on you. If they survive the summer, they should resprout in the autumn and grow through the winter into the spring. --Lee Poulsen Pasadena, California, USA - USDA Zone 10a Latitude 34°N, Altitude 1150 ft/350 m On Jul 18, 2015, at 6:58 AM, Garak <garak@code-garak.de> wrote: > Hi PBS, > > I have a question about Tigridia Philippiana. I started some Tigridia species from seed this spring (in March), and while the T. Pavonias (own seed) want to break records, T. Orthantha and T. Chiapiensis are doing fine, behaving like the T. Vanhouttei I started last year but the T. Philippiana, while beeing the first to sprout after 23 days, started to wither at the end of June, completely vanishing by now. I was curious and found a fully intact micro bulb, bright and firm, but without roots in the pot, so obviously, it went completely dormant. Any hints on how to treat it now and when it will wake up again? >