Overgrown Writhebark

Some tips for harvesting Overgrown Writhebark (that also work for other overgrown herbs):

In the Emerald Dream, you often see Writhebark up in the trees, or in the branch loops floating in the sky. Makes sense, it is bark after all. But how do you catch a herb that's running away from you, without falling off the branches? And how do you deal with the knockback it gives you when you first try to pull it?

Method 1: be a druid, or have the Sky Golem mount that lets you gather while mounted.

Method 2:
step 1: have the herbalism skill that lets you gather while mounted, plus the bronze timelock dragonriding glyph. If you don't have those, you can also use class abilities like monk teleport that help you jump back onto the branch after a knockback. However, being able to herb while mounted is useful, because you can catch up while riding your mount.
step 2: before you try to gather the overgrown node, set up your teleport point. Don't get off your dragonriding mount if you are using bronze timelock!
step 3: gather the node. As soon as the tree appears and you are knocked back, get back in.
step 4: Chase down the tree on your mount or with movement boosting skills, and click it. You can move while channeling this specific gather.
Repeat step 4 until the tree disappears.

I dont know if its intentional but you can herb on any mount in the dragon isles as long as you have the herb while mounted dragon riding skill unlocked. I was herbing on my Ashes of Alar.

The cast bar when collecting from an overgrown running-away herb reads "Herb Gathering...?"