Selaginella kraussianaAlso known as selaginella.
Alternanthera philoxeroidesForms dense floating mats on water.
Arundo donaxA large clump-forming perennial.
Zantedeschia aethiopica var. green goddessPoisonous to humans, pets and livestock.
Ageratina adenophora and Ageratina ripariaBoth species form dense colonies.
Cortaderia selloana, C. jubataAlso known as cutty grass.
Vinca majorHas violet tubular flowers all year round.
Nephrolepis cordifoliaHas feather-like fronds up to 1m tall.
Tradescantia fluminensisMay cause dermatitis in dogs.
Hedychium gardnerianumAlso known as kahili ginger, ginger lily.