Hi, Im trying to check this issue online but I cant find the answer. Lucky I was able to check your website. This plant started to grow a week ago from the roots of my cactus. I dont know if its ok to remove it or does it has something to do with the cactus? Thanks for tge time

Looks like stray seeds got in the soil. Can be removed, is my vote.

That's a mystery in the making.

The cactus is definitely well established so it can't hurt to let one sprout go and see what it does.

Then let us know, please.

You can always cut them off later if you want, or leave them alone.
This is how new things get discovered.

I'm beyond curious. Yes, let it grow awhile to see what it is.

Further growth should give us more clues about what it is. I'm thinking we see cotyledons on skinny sprouts, but of course I could be wrong. If seedings, there should be different leaves from the top soon.