Essential Oils: G-I
| ESSENTIAL OIL | BOTANICAL NAME | ORGIN | EXTRACTION | PART OF PLANT |
| GALANGA ROOT | (Alpinia galanga) | India | Steam distilled | roots |
| GALBANUM | (Ferula galbaniflua ) | Iran | Steam distilled | resin |
| GARLIC | (Allium sativum) | India | Steam distilled | bud |
| GERANIUM | (Pelargonium asperum) | Egypt | Steam distilled | flowers |
| GERANIUM, BOURBON | (Pelargonium graveolens) | Reunion Is. | Steam distilled | flowers |
| GERANIUM, ROSE | (Pelargonium roseum) | India | Steam distilled | flowers |
| GERANIUM, ZDRAVETS | (Geranium macrorhizum) | Bulgaria | Steam distilled | flowers |
| GINGER | (Zingiber officinalis) | Indonesia | Steam distilled | root |
| GINGER | (Zingiber officinalis) | Indonesia | Absolue | root |
| GINGERGRASS | (Cymbopogon Martinii var.) | India | Steam distilled | leaves |
| GOLDENROD | (Solidago canadensis) | Canada | Steam distilled | flowers |
| GRAPEFRUIT | (Citrus paradisi) | Isreal | Cold pressed | peel |
| GRAPEFRUIT, EXTRA | (Citrus paradisi) | Isreal | Cold pressed | peel |
| GUAIACWOOD | (Guaiacum officinale) | Brazil | Steam distilled | wood |
| HELICHRYSUM | (Helichrysum gymnocephalum) | Madagascar | Steam distilled | flowers |
| HELICHRYSUM | (Helichrysum angustifolia) | Croatia | Steam distilled | flowers |
| HEMLOCK | (Tsuga canadensis) | Canada | Steam distilled | needles |
| HEMP | (Cannabis sativa) | Canada | Steam distilled | seeds |
| HINOKI | (Chamaecytaris obtusa endyl) | Japan | Steam distilled | wood |
| HOPS | (Humulus lupulus) | Hungary | Steam distilled | female cones |
| HO WOOD | (Cinnamomum camph. Ho) | China | Steam distilled | leaves/bark |
| HYSSOP | (Hyssopus officinalis) | France | Steam distilled | leaves/flowers |
| HYSSOP, DECUMBENS | Hyssopus officin. dec.) | Spain | Steam distilled | leaves/flowers |
| IMMORTELLE | (Helichrysum angustifolia) | France | Absolue | flowers |
| INULA | (Inula graveolens) | France | Steam distilled | root |
| INULA | (Inula graveolens) | France | Steam distilled | flowers |