Wyo, for my mini greenhouses for sprouting I used 5gal plastic pails.I will take lilac cuttings this afternoon. I have some rooting compound, so I will use that.
We have a volunteer Mulberry bush that is in a bad spot, so I will take cuttings from that one also and see what happens.
We are planning to fence an abandoned pasture area for free-ranging chickens and I hope to get some shrubs and other cover growing in there for them. Fruiting plants would be a plus.
I put drain hole about one inch from the bottom. filled the pail about half full of dirt. put about 20 shoots in . Set the bucket into a white 13 gal garbage bag . raised the handle and pulled the ends of the bag up and tied them to the handle to hold it upright.
keep the dirt moist .
I air rooted a mulberry.It took very well. I imagine green shoots will too.