Wind Zones at a distance further than default

Hello!

This is a quick and simple question, i hope, because i've clearly missed something. I cannot find the setting that allows wind zones to operate at a further than the default distance from the viewer (sceneview, and camera included).

My problem is that there's some trees (basic palms in standard asset) across the pond in a very simple scene, and i'd love to make them sway in the wind. However, windzone doesn't activate at all unless the viewer is at a set distance away from the trees themselves. This also causes very ugly "snapping" back into their original angles when the view moves, but in this case i'm using a static camera.

I tried making separate cameras that went un-used just to look at the trees to force them to be active, but no luck in that either, until i actually switched to them.

I can't quite believe i couldn't find anyone else asking about this issue. I must've missed something completely basic.