We have a little room, where the exercise equipment is no longer used, off the main greenhouse. It's very useful for storage of pots, tools, seeds and materials. I've also kept the table at each end clear for my own use and Sammy cat's, respectively. The long bench along the taller side now has a nursery tent on it for when the seedlings in the hatchery (in the house) are big enough to pot, but still tender. It's fitted with heating pads and grow-lights. Worked a charm in this past, its first winter. When the plants outgrow the tent and need transplanting to 4" pots, they come out onto the bench-top.
This way, I could keep cohorts coming at about 3-month intervals... in theory.
Really, I only do an early planting of tomatoes, peppers and cucurbits for the unheated side of the greenhouse and a smaller late one for outdoors. This year, outdoors was inhospitable, so everything but a couple of tomatoes, tomatillos, peas, sunflowers and strawberries is inside. And it's damn crowded!
