Enquiry from Australia

In Australia, is it ok to grow for yourself in your own backyard if you are not selling? I mean how serious of a crime is it to grow few plants in your own backyard? if somebody saw my plants and reports it to police do you think the cops will break in even though there was no selling or any other activities?
Thanks for your help

I believe it’s kinda like the US and there’s different rules for different states

Google gave me this but I would research it more if it were me

Its decriminalised in Victoria, you can grow 4 plants personal, and carry up to an ounce. If you are caught with more you are fined. Pretty sure if you are caught with a large amount then you may be in trouble