Legislation being proposed in Australia would criminalize most permaculturists, farmers, gardeners, nurseries and bush regenerators by banning any plant that contains DMT – a naturally-occurring hallucinogen. Five plants are currently criminalized, but the new list will include hundreds (possibly thousands) of other species that are common garden plants and include a significant number of common native plants including the national flower, the wattle.
Having any of these plants could get you charged with and convicted of a federal drugs violation. The list can be found here, comprising about four pages of the 41-page document.