Quote: >I have a couple of cymbidium ensifolium, the leaf tips get yellow and brown, >any ideas in terms of what cause it?
Old leaves do that, but if it is happening with young leaves, then suspect poor drainage and in particular over-watering in Winter. This is a cool growing monsoonal species that loves to be in a large mass, extremely root bound but also free drained - think of it as wedged into a crack in a rock, with a decade of old roots locking it in place as it spills across the boulder. In nature, it gets a cold Winter and little or no rain in the November-February period, and will not easily flower if grown hot and or wet. It will be unhappy if kept cold and wet when dormant. (I don't know where you are growing, so these comments may be completely irrelevant to your climate.) The alternatives do, of course, include a myriad of possibilities, from salt accumulation to a virus. However, it pays to consider the obvious first! ______________________________ Oliver Sparrow +44 (0)20 7736 9716 www.chforum.org _______________________________________________ the OrchidGuide Digest (OGD) [email protected] http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
