I've only just realised there's a symbol chart - and a few plants should be reported within 24 hours.
And while I do intend to study, read up and report - I'm fascinated by these hardy plants that travel and grow where they're unwanted. That are hardy and tough and vigorous.
As I commented to my husband when he looked askance at me looking up the evolution and uses of thistles - these are the plants that will remain long after we're gone.
And if things go badly wrong - these are the plants people will be living off.