i want to make a plane with grass using particle system. For that i start with a plane, create a vertex group and go to weight paint mode to paint the areas where i want grass. But for some reason, the weight painting does not follow my brush across the plane. Mostly the brush does nothing on the plane, but when i just try to paint crazily all across the plane, ,i get few paint values on the sides of the plane. Please help.
File attached - https://easyupload.io/fz1i3e