An odd dha with dried leaves on it

[Mark]

This is a dha that someone asked my opinion on. My guess was Cambodian, but it is just a guess. Vietnamese and Thai are also possiblities.

What is especially intriguing are the dried leaves that are tied to the scabbard. They are very likely bamboo leaves (definitely monocot, anyway). As you can see, they are folded and tied in a very particular way, with sticks piercing and holding them together (there are also holes where a few are missing). Has anyone ever seen this before? Any ideas about its significance?