Common Name - -	Family : Order
Gaditana jonquill - -	Amaryllidaceae : Asparagales
Gallic rose - -	Rosaceae : Rosales
Garden hyacinth - -	Hyacinthaceae : Asparagales
German chamomile - -	Asteraceae : Asterales
Giant Australian cycad palm - -	Zamiaceae : Cycadales
Glacier pink - -	Caryophyllaceae : Caryophyllales
Glandular lesser calamint - -	Lamiaceae : Lamiales
Glossy abelia - -	Linnaeaceae : Dipsacales
Gnome-like catasetum - -	Orchidaceae : Asparagales
Goat willow - -	Salicaceae : Malpighiales
Golden kiwi - -	Actinidiaceae : Ericales
Golden leaf sage - -	Lamiaceae : Lamiales
Golden swan orchis - -	Orchidaceae : Asparagales
Goosefoot moonpod - -	Nyctaginaceae : Caryophyllales
Graceful buttercup - -	Ranunculaceae : Ranunculales
Greater butterfly-orchid - -	Orchidaceae : Asparagales
Greater knapweed - -	Asteraceae : Asterales
Greater yellow lady's slipper - -	Orchidaceae : Asparagales
Greatest cattleya - -	Orchidaceae : Asparagales
Greek oregano - -	Lamiaceae : Lamiales
Greek sage - -	Lamiaceae : Lamiales
Green antelope orchid - -	Orchidaceae : Asparagales
Green arrow arum - -	Araceae : Alismatales
Green oregano - -	Lamiaceae : Lamiales
Greene's four o'clock - -	Nyctaginaceae : Caryophyllales
Green-winged orchid - -	Orchidaceae : Asparagales
Green-yellow catasetum - -	Orchidaceae : Asparagales
Grey mangrove - -	Acanthaceae : Lamiales
Grey willow - -	Salicaceae : Malpighiales
Ground elder - -	Apiaceae : Apiales
Guabo - -	Fabaceae : Fabales
Guama - -	Rhamnaceae : Rhamnales
Gumbo-limbo - -	Burseraceae : Sapindales
Gwathak - -	Apiaceae : Apiales