Seeds were planted in a 50/50 mixture of organic peat moss and Jurassic sand, which was first moistened and microwaved for 5 minutes to kill off any unwanted pests:
And the main reason for this update... After doing a bit more research on the plants, I discovered that there was an Australian native "weed" growing in my own backyard! Portulaca oleracea, commonly know as purslane or pigweed is an Australian native that now has a nearly global distribution. It is native to much of Australia, including the range of N. amyae. Pretty cool! I do not use any pesticides or herbicides on my lawn, so I know the plant is vivarium safe. I did rinse off all of the topsoil and re-planted it in the same mix I used for the seeds, mainly to avoid any unwanted hitchhikers.
To be continued...