White Deposits on Exterior of Clay Pots--Any Significance?
I have noticed that all of the plants I have in clay pots tend to form these white deposits on the exterior of the pots over time. Some plants are in gritty mix, others are in MG potting soil, and they all do the same thing. I water with water that comes from the tap but is run through a charcoal filter. I am fertilizing with Foliage Pro at 1/4 tsp to 1 tsp/ gal, depending on the plant and the season. The plants seem to be fine, but I'm wondering if the white deposits mean something significant? Excess salts? High TDS in my tap water? Should I care?