On Sat, 24 Feb 2007 01:31:11 GMT, "JoeSpareBedroom"
wrote:

I don't know those plants well, but my first guess would be the water. What
is the source? Municipal water? Well water? Softened? Is it winter where you
live? How often are you watering?

Municipal water, not softened, varies in quality but tends to be on
the hard side. It's winter, I'm watering it lightly once a week, it's
potted in a mixture of about 50% commercial potting soil and 50% sand.