Apparently it was his ex-girlfriend's. It came with the pot (plus some plants - that I'm sure will show up later) and the same pot in a larger size, which I planted with two Dracaena marginata:
|d marginata roots - the tap root was longer than the plants!|
|ZZ Plant Rhizome / Roots. Rootbound much?|
None of these are hardy outdoors here, of course, although they should be able to be outside for the summer. Right now, ZZ is back indoors (the wind was too hard on his stalks - two even broke off!) but the others are still outdoors. I think the extra sun they get on the part-shade patio should help them.
Note to future - next time, don't wait for 5 years before repotting! Now to see whether they all survive this adventure....