Wind zones on custom vegetation without Terrain

I'm trying to use a wind zone to generate some movement to plants in my scene; I read that wind zones operate based off of the shader, so I've tried to use the terrain shader asset that comes with unity (nature/soft occlusion) as well as a hidden shader from a material created after making a tree with tree creator. Neither worked. Is there a way to achieve this without using a terrain?

I've been browsing the answer forums and internet for a while, and I've found some resources, but nothing seems to work.