Does not Papivar somniferum grow there? There's 100 things you can do with it . Extract it separate it, substitute it every thing from the most basic chemistry 101 up to molecules that are potent at 10 mg. I think several species of salvia grow there which can be extracted into powerful meditation type drugs (delirients). I looked at a couple ethnobotany links. They didn't offer any chemical analyst, so I can't speak with any authority about the drugs that grow there. Talk to an elder or some people familiar with the medicinal uses of plants. Pain relievers, sedatives, stimulants, hallucinogens... Write down the names. We'll see if we can identify the plants and hence the chemicals they contain. Lotus flowers, grasses, shrubs, There are drugs in many types of plants and substituting a few molecules can make stronger drugs. Cathulus edulis perhaps? Also write down the names of poisonous plants. Sometimes poison is medicine and sometimes medicine is poison. It's all in the dose ( or the arrangement of molecules ).