I have really sandy sub=soil here, with about 20 inches of very rich black dirt on top. I think this must have been a lake bed in pre-historic times. I'm goining to plant them inside and transplant outside. I may try to put some in large containers and braing them in over winter as an experiment. We'll see how they germinate. Since I have a bunch of horses, I have lots of compost to add to the soil, making it really nice.