Here’s a set of 5 trees converted from Sims 4, retextured and made seasonal. Includes a stone pine, a hawthorn, a weeping willow, an olive and an elm. I already converted stone pine, weeping willow and olive tree so consider this a remaster - lower polycount, better smoothed mesh, prettier textures and a bit smaller stone pine. GUIDs are randomized so you can use them alongside old ones if you want. Note that stone pine and olive have particular lighting on leaves in all seasons except summer (basically when the seasonal filter is applied) - EDIT 29/11: there’s now a second version that has normal lighting but higher polycount, be sure to keep only one version for each of the two trees!
Stone pine: 2809 (4913 for better lighting on leaves version)
Olive tree: 2233 (3847 for better lighting on leaves version)
More pictures of these trees
Compressed, clearly labelled, picture included
Forgot to delete falling leaves in autumn on stone pine. This is now fixed, please redownload if you prefer this version.
Added a second version for stone pine and olive tree. There will be no more weird lighting in other seasons than summer but the polycount went higher (see the list above). Choose only one version for each of the two!