Does anyone know anything about browning in bridgesii cacti, and whether I should be worried about this? I acquired half a dozen cactus seedlings in September of last year, and I water them every week or so. They're on a window sill which receives about 4 hours of direct sunlight a day, and indirect light during the rest of the day. Where I am it's winter at the moment, and it gets to be around 45 degrees Fahrenheit during the middle of the night.

I've attached a couple pictures of the cacti, sorry about the low webcam quality though, any part which looks brown in the picture is about twice as brown on the cacti.

Here is a link that might be useful: Cacti Pictures

This post was edited by mikeraglass on Sat, Jan 5, 13 at 23:35