Different Display of Plant Object Based on Distance

So I have a seaweed model and I'm using the Place Trees option in the terrain and place them all over the place. However they are displayed as very simple 2D seaweed from a distance but once I actually get close, they switch to the actual model but smaller and placed oddly. I don't know if this is an issue with my model or with Unity's rendering?

Also it gives me a warning saying to use Natural/Soft Occlusion Bark shader(I added Soft Occlusion Leaves instead since it is seaweed) but once I apply it, it gets ride of the rendering issue in where the seaweed stays the same from a distance or up close but it's as the simple 2D version instead of the actual model.