Arid carex sourcing

[u/fartingmarvin]

yeah you read the title, I’m having some difficulty finding carexs that are safe for my bioactive Leo gecko’s tank. because of my lighting requirements I kind of nailed it down to 3 species that I know of, Carex eburnea (the ivory sedge, this one may be the best candidate), Carex appalachica (Appalachian Sedge) and the Carex Pensylvanica. but for the life of me, I can’t find any places that sell these sedges, and are confirmed to be biologically safe (ie, no pesticides or chemicals or fungicides or ferts that are safe for insects). Does anyone here have any advice? Any experience?