Particles on Foliage

Hey Guys,
I want add Particles for Glowworms and Fog on a Tree, but I don´t know how…
If there´s no way, I must manually put them in, to about 2k Trees, that´s a lot work…

I hope anyone can help me^^

It would be very easy, if I can add a blueprint in my Foliages, but it don´t works