I'm pretty sure that standard herb picking takes 1 second, not 2... I could be wrong though. =x
I didn't know about the claiming of herb nodes though, that's interesting. Every time I've seemingly reached a node at the same time (or right after) and started picking I've gotten it.
Guild Wars 2, Crystal Desert server:
Inga Freyasdottir, lvl 40 Norn Mesmer
Deathbringer Kaami, lvl 16 Asura Necromancer
Popina, lvl 15 Asura Elementalist
Althaia Willowbark, lvl 7 Sylvari Engineer
Maeve Amnell, lvl 4 Human Guardian The MMO-Zam's FB group.
Please message me first so I know who you are.