Not Established
| Common name (English) | |
|---|---|
| Galega officinalis | Goat's Rue |
| Galinsoga quadriradiata | Peruvian daisy |
| Gallus gallus f. domestica | Domestic Chicken |
| Gambierdiscus | |
| Gazania rigens | Treasure Flower |
| Genista tinctoria | Dyer’s Greenweed |
| Ginkgo biloba | Maidenhair-tree |
| Glandularia aristigera | Fine-Leafed Verbena |
| Gleditsia triacanthos | Honey locust |
| Glycine max | Soyabean |
| Glycyrrhiza glabra | Liquorice, Drop |
| Gomphocarpus fruticosus | African milkweed |
| Goniobranchus obsoletus | |
| Gossypium barbadense | American Pima cotton; Sea Island cotton |
| Gossypium herbaceum | Arabian cotton |
| Gossypium hirsutum | American cotton |
| Grevillea robusta | Australian Silky Oak |
| Guizotia abyssinica | niger-seed |
| Hakea drupacea | Fork-leaved hakea |
| Helianthus annuus | Sunflower, Mirasol |