I recieved some bonsai seeds and I planted them in August not thinking about the seasons. I have been growing them inside so far. I have 3 types, Jacaranda mimosifolia, linus, and picea. I live in Missouri, and I know I need to winterize the pines but I'm not sure if there ready. They're only about an inch tall and one level of needles of 5 to 8 needles per plant. Should I put them outside for winter? It's just now starting to get cold here too.

I am pretty new to bonsai-ing myself. However, are these trees pines and like outdoor plants? From what I looked up, they look like they are evergreens and outdoor plants. I would have placed them outside all year long, but since you have been growing them inside, just keep them inside.

I would grow the plants inside through the winter, especially since they are young. I would make sure they are mature enough to live outside. As soon as possible, put them outside to grow well.

I don’t know the climate of Missouri, but I know that MOST LIKELY, these trees are outdoors, so try to keep them outside.

If they are doing well, then just keep them growing inside I guess.

Jacaranda will not survive frost. -> Keep inside
Picea and Pinus will not survive the indoors. -> Keep outside, but protect from excessive rain; A bit n the dry side is better.

Note that there is no such thing as bonsai seed. These are just treeseeds.

Thank you for the advice. What is the best way or different ways to protect from freezing?