greenhouse shelf seedlings

I set up our little greenhouse shelf on our enclosed porch and have been slowly planting flower seeds in my seedling trays. Much more slowly since I ran out of potting soil, in fact. Today I think we can pick some more soil up, though. Since the garden will be planted in our front yard I thought I’d grow mostly flowers. We are going with simple, hardy ones like cornflowers, marigolds and zinnias.