I'm sorry to ask you this, since it has little to do with your mod. However you are the only one out there who seems to understand how/why blueprints works, so i'm hoping you can offer some advice.

Long story short, I play with this mod in every game.

https://mods.factorio.com/mod/Arborium

It lets me grow trees that can be placed in the world to combat pollution. In the late game it becomes really annoying because I love to have construction robots do everything, but since trees cannot be added to blueprints (the game ignores them (and rocks) when you select an area with a blank blueprint), construction robots cannot place them.

Is there any way, assuming I had the right item IDs, that I could custom make my own blueprint strings so I could make a blueprint that had trees in it?

I'm not asking you to do it for me, just let me know if it's possible.

Thanks.