Valerians have such small roots it's a wonder the plants stay upright.
Unfortunately, the two largish valerians (Valeriana officinalis) that grow in my garden which were due to be pulled up were growing in grass, and thus left their roots in the ground. (... no biggie, it's a weed, self-seeding all over the place.)
And somebody's made off with my spade.
So no pics of dinky little roots under enormous plants this time around, sorry. Just a pic of dinky little roots under a smallish valerian plant.