My plants at my work) Yes I grow nettle up on a windowsill. I didn't plant it deliberetly. I just transplanted the haworthia and there was a seed of a nettle in the soil. When I saw the first sprout of nettle I decided not to pull out it, it's also plant, why can't I grow it up?)) Everyone who cames to me asked me "what is it?". It's funny that some of them trying show me by finger, what plant they talking about)) And the most popular question was :"Why don't you pull it out?". Of course I answered :" for what? I like it!)". And I really like it. I think my nettle is a nice member of my windowsill club.