no "emporium" that I know of maybe contact some folks on meet up for your
local part of LA
maybe this is a business opportunity?
compost bins are really better used as worm farms in my
experience.
I know culver city/mar vista has a
permie house, they just did a weekend
pdc, contact them?
there is the institute of urban ecology who also do a radio show on kpfk, maybe call in or email your question to the show. actually, check out there website and they interview a bunch of local permies who may be able to guide you to what you are looking for.
and there is a guy up in topanga canyon who is doing great stuff-- I can't recall his name or group name right now.
also, you can just take some walks and get a lot of seeds for free.
anyhow, welcome to permies, this site is awesome!