By Eden_808
United Kingdom 
Hi, I've just spotted this plant growing out of my skirting board... One thing to mention is that this area is damp. There's a bathtub on the otherside of the wall which we suspect is leaking. I'm a bit alarmed because this looks a bit like a japanese knotweed root, although we dont actually have any in the garden outside. Can anyone help?!
25 Aug, 2018
Answers
Picture doesn't magnify well so I can't be 100%, but do you have Equisetum growing in the garden? Because that's what it resembles ...
25 Aug, 2018
First thing I thought was equisetum. If it is then it's at the spore producing stage by the looks. It will be more susceptible to treatment at that stage. They look like a cross between a mushroom & an asparagus. Most people, understandably, don't like systemic herbicides but this might be a case where it's justified
25 Aug, 2018
I also think its more like an equisetum. either way you need a builder to look at the problem with the wall as the wood must be unsound for anything to grow through it.
25 Aug, 2018
Previous question
Oh dear! This cannot be good, whatever it is. I think you need a builder, not a gardener.
25 Aug, 2018