A.

Problematic invasive alien plants in Kommetjie include: Port Jackson,
Rooikrans and some gum trees as well as Sesbania in the river, Brazilian
Pepper in some gardens and the popular, spiky fences of various Agaves, sisal
and prickly pear. Most of these are actually illegal to grow or plant and
should be removed and replaced with other, preferably indigenous plants.