About one and a half years ago I downloaded a free tree mesh pack from Turbosquid, hoping that one day I could use it to make Seasons trees. After much learning and tweaking and poking around in Wings3D and SimPE, I'm glad to present a new deciduous tree: balm poplar. It comes in three sizes, with two recolours. The two larger ones are slaved to the smallest one.
Obviously, the changing-of-leaves function only works if Seasons is installed. It can also be used without Seasons, though: in that case only the summer state will appear.
This tree is based on Bienchen's tree template (http://www.piggis-sims.net/Bienchen83/englisch/index_e.html), for which I'm very grateful. I've made quite a few changes, though, so feel free to clone this tree to make your own.
With 6716 faces and 11462 vertices, these are not exactly low-poly objects (by my standards). Still, being rather large and complex, and still in the range of a lower-than-average hair mesh, I think it's not too bad.
If you would like to recolour these or any other seasons-compatible plant, please see my notes here (http://sims2artists.com/index.php?topic=3341.0).
The sky texture is by Chris997. (http://www.modthesims.info/d/187229)
Download balm poplar trees (http://www.box.net/shared/gtf42it66c0xmt9tvmbx)
(http://i51.tinypic.com/2hgyfs9.jpg)