You can plant in full sun or partial shade.

I always thought that while they do best in part sun, if they go in full sun they will need a lot more water since this guest is in Greece.

depends if it is the zanden......? one or the Arum maculata type that we have as a native in britain.

This shoots up all over my garden...so I would say it grows happily in full sun, full shade or partial shade...really not that choosy!