Wonderful – Thank you for posting your findings here Yuki. Valerian grows near water in the Netherlands. I grow it at my volkstuin. Tall and beautiful plants with delicate flowers. Very interesting scent also. My rooftop also has a lot growing there, a slightly different variety and they grow in my pots, so tolerate quite dry conditions. They work just as well.
Urban Herbology Apprenticeship
Foraging, Growing and Using Herbs in Cities