For those of you who live in areas with harsh winters, do you protect your
trees from the south/southwest sun in winter?
We live in upper Michigan on the zone 3/4 border. We lost a persimmon tree our first winter to sunscald, but that tree was iffy anyway (only hardy to -25 and we often get colder than that in winter here). But now, we have chestnuts, hazelnuts, hickories and butternuts planted and intend on planting fruit trees next year. The planting area gets a decent amount of southern sun and is fully exposed to the southwestern sun in the afternoons.
So, my questions are:
1. Is it necessary (or highly recommended) to block that south/southwest sun from trees in winter?
2. All trees or just certain species?
3. At what point in a trees live is this no longer necessary?
Thank you in advance!