So I'm new to trail running (and running in general) and enjoying it so far, but where I run the grass & brush is often overgrown enough to hit my legs so I'd like to avoid picking up ticks, poison oak, & fox tails. It will be getting hot soon so I don't want anything meant to keep warm in the winter (which seems to be the category most running pants/leggings fall under). I also don't want to be replacing them every time they snag on manzanita.
Does anything like this exist and, if so, what should I be looking for?