[Worf]

Is "plant matter" weed?

[mrWiz]

Mostly no. Dead leaves that were just lying on a trailer without getting cleaned in advance and bits of decorative plants that broke off are probably the worst offenders.

[quux]

Worth noting: Plants, living or dead, are banned from Burning Man because they turn into moop really easily, but some always end up there anyway

[ceejayoz]

You think they’re leaving any of that behind?

[Jarwain]

If it was that'd be an absurd amount of weed being left behind to make a mark on the map.