On Nov 27, 2:06 pm, "Duncan" wrote:


Something else that no one mentioned is that volcanic
rock is often high in flourine.


hmm, could that be what's causing the icky black spots on the back
canes of one of my dens? (the plant is otherwise growing like a bamboo
and produced four flower spikes last summer, so they're apparently not
harming it, just ooky-looking.)

But the biggest problem is the salt build up.
SuE

they get fertilized every other week or less; in between, the pots get
flooded with plain water. (and when they get ants, the plants get
stuck in the sink with the faucet running on them full force for about
ten minutes every few days.

--j_a