I believe Honda could have designed a better window seal. My neighbor's birch tree seeds accumulate in the rubber trough and they sprout! I have added a new dimension to ECO mode.

 

You suppose to drive the car, and not letting it become a flower pot.

 

Wow.

I've noticed trash accumulating on my window seals also. Fortunately it flushes out well with the water hose.

When is the last time you washed your car?

 

Nice bonsai...

 

That's pretty much the way all "dew wipes" are configured. Wash your car!

 

Use a leaf blower or metra blaster before it blooms

 

Yesterday I did a manual "root canal" on my Fit window seals. No chance of blowing the gunk out because things never dry-out around here. Besides, the Fit window seal trough is half inch deep! The Dodge window seal in this photo is a much better design, no birch seed penetration! Roll down the window and the moss comes right off! I'm jealous of all you guys with garages.