These two plants appeared after a very wet winter. No flowers have ever appeared, but it looks like it is making a lot of big seed heads. I am thinking to pull it before it drops its seed. It is in full sun, and seems to be somewhat drought tolerant. Central Oregon. Photos taken a month ago, now seeds are bigger but no other real changes.
It seems Euphorbia_lathyris . For sure it is an Euphorbia, with such inflorescence.
Looks like it is Gopher Spurge. https://gobotany.newenglandwild.org/species/euphorbia/lathyris/