Hit up the swamp areas with a therizinosaur; use the right-click (fiber-harvesting) move on any of the sort of dark and curly underbrush, and you will be rolling in rare flowers.

This works both on the small swampy area with gas vents on the western-ish part of the main island, and in the large swamp area in the eastern part of the main island.

Originally posted by Packetdancer:

Hit up the swamp areas with a therizinosaur; use the right-click (fiber-harvesting) move on any of the sort of dark and curly underbrush, and you will be rolling in rare flowers.

This works both on the small swampy area with gas vents on the western-ish part of the main island, and in the large swamp area in the eastern part of the main island.

Thanks!