As such, in some areas (for example California, Hawaii, or Green Spain) it is regarded as an invasive weed, whilst in New Zealand and South Africa, the plant is banned from sale and propagation for the same reasons.
The plant is banned from sale and propagation for the same reasons. This was as an invasive weed. This was what it is regarded as such. An invasive weed is whilst in New Zealand. An invasive weed is whilst in South Africa.