I planted several cells of herb seeds several weeks ago in mid April and they've now sprouted and are growing quite well, except that some are wilting. When I take a closer look, it seems as if their stems have shriveled in the spot between the root and just underneath/above the soil. Does anyone know why this is? I water them regularly and at the same time, and it happens to some plants but not others in the same cell, so I don't know how it could be from over or under watering them.
My other question is that, some of the cells are getting pretty crowded (more seeds sprouted than I anticipated-- pretty close to 100%, I would bet), and I'm thinking of transplanting them. The thing is, I'd originally planned on planting them in a large pot along with an already grown rosemary that I bought and didn't start from seed. I transplanted the rosemary when I got it into the pot, thinking that I could add the others when they were big enough, but now... I think the seedlings might benefit from having more room to grow, but since the rosemary's been sitting outside... I don't think the seedlings would survive being put outside. Can I take the entire pot with the rosemary inside, or will it shock the rosemary? Do I really need to transplant the seedlings at all at this point, or will they be all right in their cells until they've grown more true leaves?
Here are some pictures I took with my iPhone. I live in California, zone 9b. It's pretty windy and alternates between warm sunny weather and chilly rainy days.
I've got parsley, dill, garlic chives, sweet marjoram, oregano, thyme, basil, and arugula. Thanks everyone!