Hair renders from regions outside vertex group I have a vertex group and hair renders outside the region.  I can reverse it by the double arrow and that works - no hair inside my vertex group.  I have no modifiers applied. How can I only get hair from my vertex group?
As with many things in life, I do not know the answer. But I do know how to cheat.

In edit mode, subdivide the faces you want hairy. Create a one-face-wide border between the hairy area and the rest of the surface. Assign your weight to the inside faces, and make sure your border faces are blue. Looking at the mesh in weight paint mode will show you if the hairs need a broader border area...

I am not sure this is right, but it mostly works....