Answer: I'm not sure what is causing your plants to yellow. Yellowing of leaves can be a sign of lots of problems, including keeping soil too wet or too dry, disease or insect problems, lack of nutrients, or lack of light. Since you seem to be doing things correctly, from what you describe, my first guess is insufficient light and/or root rot from overwatering. Here are a few guidelines for starting herb seeds indoors: Use a sterile soilless seed-starting mix (garden soil can be contaminated with disease-causing pathogens) Once the seedlings emerge, place under fluorescent lights. Keep the lights just and inch or so above the tops of the plants. Feed with a dilute fertilizer solution (as you have been). Keep the soil moist, but not saturated. Wait to trim your plants until they are a healthy green and growing vigorously. Good luck with your garden.
Q&A Library Searching Tips