I have limited seed starting room inside, so I'm thinking that winter sowing might be a great option for me. I have a question, though. When I plant seeds inside, they have plenty of time to gain some size before planting out in the spring-If they are going to take longer to get to panting size, I plant them earlier . With wintersown seeds, I'm imagining a later start (on Mother Nature's schedule)=smaller seedlings at planting time. Are there ever any times when a seedling isn't big and strong enough to be set out the first year? (I'm thinking perennials and natives)-how would I overwinter these babies a second winter? I live in zone 4 and plants in containers don't usually do well in the severe cold. Do I need to worry about this? Any suggestions?