How to create a particle for a point cache from bottom to top

Unity Engine
1

Hello, I am making a tree with vfx graph.

Created “set position from map” and put the tree point cache into the attribute map.

However, I would like to slowly create stems and leaf particles from the roots of trees one by one.

I adjusted the scale, but it wasn’t natural.

Is there a way to create a particle of position from map from bottom to top?

2

Conceptually, I would imagine that maybe a kill plane or volume that you slowly moved would work. Spawning sequentially may do it, but I don’t imagine the point cache would be ordered correctly to do that though.