Trees grow up, not sideways!

Hi there,

I have a scene where I am emitting hair particles, which uses a group of trees I modelled.

I am using a painted vertex group to place them on a small hillside.

Some of the trees are sideways, some angled, etc. - as they are pointing in the direction of the normal (i am guessing).

I just want the hair particles to point straight up, like trees do, instead of all over the place…

Any idea how I can achieve this?

Thank you in advance!

In the particle settings, enable the Advanced options. The under the Rotation settings you can set the appropriate Initial Rotation