Pedantic note
A species of sponge has been discovered that apparently takes up arsenic without harm to the sponge. If someone were to eat one of these sponges - and I know you secret sponge eaters are out there - the results would be as lethal as taking your arsenic from the table of periodic elements.
Whether this sponge could, thus, be construed as a botanically poisonous organism, I leave to more learned minds than mine.
Oh and pretty much every state uses those cards - not just Colorado. Its a pain in the ass selling one of those cards for cash - for one thing, Colorado, anyhow, does not give out generous food stamp awards. For one person the range is $10.00 - $130.00/month. Suppose you could find someone who would take your card and give you about half the value on it. If that's how you supplied your drug habit, you'd be down stealing the little kids' coca bread within a day or two.