So I've always thought I had a fairly green thumb. Can your thumb change color?
I'm in an apartment and have potted "houseplants" on my screened patio. Three of them, that I've successfully revived for a friend from near-death, have recently begun suffering from browning at the tips of the leaves, which I trim off maybe once a week. I usually water them twice per week to just dampen the soil, not drown. They were doing fine up until about a month ago. They're not exposed to freezing temperatures and the sunlight remains the same (northern exposure).
I think the waterings are as they should be. The only other thing I can think of is overcrowding. As I cut them down periodically to encourage new growth, the root base may be too large for the pots they're in. Right now, I can't buy new pots, nor do I have the space to do transplants.
I'll be moving this summer and will be able to transplant, if indeed root space is the problem, but any suggestions for how I can keep them healthy until the move? Or any other thoughts as to what might be causing the browning?