Sorry to divert from the focus on micros but I have a question on thyme.
I must not be using the right soil as I kill my potted thyme every year by drying it out during last summer, hence no desired indoor grow for me. Based on your success with enriching your soil, maybe something not so "lean" is in order here.
Any idea what variety you are growing? I've tried what was labeled as common thyme and also a purchased generic plant in 4 inch pot. Both gave it up under my care
- Lisa