I had some seeds from who knows where. This plant grew to about 4 feet last year and I cut it down in the autumn. It has seeded itself this spring and I have a few seedlings coming on. Does anybody know what it is. It does not flower.
Looks like the weed Euphorbia, Caper Spurge.
It's a Euphorbia. They do seed themselves, but are easily pulled out where not wanted.
It has to flower to produce seed. They may be insignificant or green , but they have to flower, to get pollinated , and set seed.
Gosh, I didnt know Euphorbia grew that tall!