I am growing spearmint and flat-leaved parsley in two 10” round containers. I water the plants a couple of times a week, and every 2 weeks or so water them thoroughly until the water drains out the bottom. The plants are not super healthy but they are ok. I keep them outside in an area with a significant amount of sun, but don’t have many locations.
My primary question is: when I water the parsley, very dark water comes out the bottom. Yet the mint the water runs almost clear. Why the difference? Both have been treated similarly, were planted in the same mix, and were only planted around 4 months ago.
Secondary questions: why might the mint be very spindly, and why might neither plant be flourishing?
Photo (note that I’ve removed most of the damaged/unhealthy foliage):
The pots do have a small hole in the bottom, so they do drain.