the boiling water sterlizes the soil so if any thing bad is there like fungus it helps elimate it.
If you notice.I used what we call peat pellets its a compressed disc that is suppose to be sterile.water makes it expand.I expanded them then stuck the seeds in and added a bit more water.I left my plastic dome closed till they sprouted then moved the sprouted ones out into 4 inch pots.
This is 1 seedling I transplanted 1 month ago.Its bigger now.
thats a hanging basket pot.I've got some azealia pots in garden shed once I can move around in there .The other 2 are in 8 inch round pots .Nows a good time for you to start your seeds as your haveing spring(I think...I know christmas is summer) I do mist them daily.with fertilzer water.they like lots of fertilizer and will have to watch for spidermites(will be lil yellow babies) Longy another forum member is from down under and can help you name a product over there.it would be a fungicide.if your not sqeemish..........you can squeeze them dead on plant and slide them off on fingers.They also like full sun& TX sun don't seem to roast them.My picture posted is 5 months.I'll get another shot soon& post.