After planting some parsley, it contaminated another pot, the big one in the photo, then some flat parsley started to grow in yet another pot so I transferred it there, god knows from where the chive comes from and then a "stick" started pushing, and eventually sprouted some leaves which could make it idetifyable, or so I hope!
Any idea what it might be? It feels like the beginning of a tree...
Yup looks like unhealthy cannabis to me. If it was raspberry like another commenter mentioned, there would be some small thorns. I do not consider myself an expert, but I have worked with plants all my life and keep plant ID books handy.
I have an app on my phone called "leaf snap" because that happened to me. There was something that looked like a tomato seedling growing in my garden but I hadn't planted tomatoes. Turned out yes it was a tomato. No idea where it came from.
The leaves do look cannabisish but that stick sure looks like bamboo.