ktcouvs said:Thank you everyone! I water them once every 1.5-2 weeks because before I had plants that all suffered from me over watering them! It's tricky. They have been thriving for about 8 months now all the sudden this is happening 
What is a suggestion for how often to water?
It is impossible to tell a person how often to water. I would have to be onsite to tell you. I live in a wood heated house in Canada. I don't use a humidifier. I primarily grow cacti and succulents but other types of plants as well. Most folks will tell you not to water cacti in the winter but given my conditions I water most of mine (about) every 2-3 weeks. When the pot feels light or the plant is getting soft. I have a ZZ plant that I only water about every 6 weeks (they have water storing parts like a camel). My clivia only gets water about every 4 weeks. The gal I saved it from had almost killed it with water. You need to develop a sense for when watering is necessary. It's an art. I keep most of my plants under HID metal halide lights for 16 hours a day and my cacti, which many folks quit watering and let go dormant through the winter, continue to grow. One thing I can tell you is more light is the best thing you can do for your plants.
