Unfortunately I had no choice to discontinue updating multi-seasons. Other airport mods would take the trees from the opposite season and placed on airport and there was no way of fixing that and I was getting complains everyday.
EDIT: Fixed. Multi seasons are back.
Also having SINGLE seasons instead of multi season is allowing me to add so many features such as multi ecosystem per region and adding 1500 more ecosystem in the world.
This is what was happening with other airport mods:
Wrong fall season placed in spring season:
