How do you get unspoiled nodes to appear?

I have been trying to do the collectibles for my gathering classes, but the unspoiled nodes are not appearing. I have unlocked collectibles (I have been grinding out Dragon Obsidians for my miner), but I would like to get the higher level turn-ins. My miner is level 55, with 435 gathering and 432 perception. Leveling guides I find tell me I should be able to use them by now. I know I'm there at the right time. I can see many other players collecting them. I don't know if I am missing a quest or just don't have an ability turned on but this is driving me mad.

Have you turned on the ability "Truth of Mountains"? (Or "Truth of Forests" for botanists.)