I was just walking the street last week and got showered with this rare treasure - ample crop of ripe elm seeds. These seem to have very narrow germination time window, so I scooped as much as I could in my hands

and planted them between soil and quartz sand layers asap, with this density. Let's see if some germinate this year!

(I did similar thing 2 years ago and got some trees in pots; I also scattered some shovelfuls in forest, no way to tell if they managed to survive yet with all the undergrowth)

I'm not using my 6-BAP on this yet, I hope to select for natural germination ability and later propagate bonsai seeds into the wild if I can. This place totally needs more elms, with all the climate change.