[Ididntdothis]

I can’t imagine Mars soil having any usable nutrients since there are no microbes or any other biological activity. You probably have to bring or produce all fertilization from scratch.

[serf]

Mars soil has a ton of required nutrients for vegetation. [0].

It might not all be in amounts easily scavenged, but they're mostly there.

[0]: https://www.nasa.gov/feature/can-plants-grow-with-mars-soil