Yes, escaped garden plant. Typically found in urban bushland reserves and along roadsides close to urban areas. Grows very well in poor shallow soils and is very toxic to stock.
Hi Betty, Bryophyllum spp are widespread in the south coast. Where they impact vegetation for which they are a key threatening process (e.g, herbs / forbs / grasslands) then, yes we control them along with a suite of other spp that present a risk to that veg community. Otherwise it is up to the landholders to remove it. Certainly, you won't find it on a farm that runs cattle or horses due to the high risk it poses for poisoning. It is also a very difficult plant to control over the long term, so when we look at controlling an infestation we must look at the long term maintenance of that site within the scope of our very limited resources.