yes exactly. it's not within the scope of this article to also go into ID and i didn't mention wildcrafting of valerian (only growing your own or buying from a trusted source online) specifically for that reason. there's only so much i can cover in an article ;) i do sometimes i write ID and wildcrafting articles tho :) the plants themselves, before they're dug up, have a lot of differences. it's my opinion too that anyone going out looking for plants with white umbel flowers and tall stalks should know how to ID hemlock! or not touch it at all. if you can ID hemlock, you'll be much safer finding the plant you ARE looking for! :)