Hey!
I have moved into a apartment with a terrace and a balcony with a roof. Especially during this time of the year, both places are sunny (most of the day ), the only difference would be that terrace would also have the rain and snow and balcony (obviously ) not. Where would be the better place for having bonsais during the winter?
Thanks!

Which species?
What sort of weather do you get?

Naturally, you do not want dormant trees at -10 in full sun and wind.

www.growingbonsai.net/what-kills-bonsai-in-winter/

Zone 7, Metasequoia, Shrubby cinquefoil and Chinese elm (which will be put inside when cold enough).

And i am aware that i should avoid sun and wind during the winter and if i am correct i can have my trees outside until -10C. Was just seeking some advices or tips.

why avoid sun? Wind yes, but not sun. and -10c is not bad.My trees stay out all the time regardless of temperature.

Sun heats up branches. With frozen roots this means the plant dries out and branches can die off .