A-to-Z List of Essential Oils with an Earthy Aroma:

The wet earthy "smell of rain" aroma, specifically named petrichar, that is generated from particular chemical components defined as geosmin which are released by particular bacteria and microbes.

One of the main components of geosmin is petrichar which give it the characteristics of "earthy odor" defined precisely in the meaning of the term, the odor that we all remember with pleasure. The earthy smell or geosmin is also part of one of the seven major categories of odors described in classification Amoore (one of many olfactory record systems) which are camphor, ethereal, pepperment, musky, floral, putrid, and pungent.

Ajowain

(Trachyspermum ammi)

Aroma Description: Astringent, Earthy, Fresh, Green, Herbaceous, Medicinal, Very Spicy, Strong, Warm
Angelica Root

(Angelica archangelica)

Aroma Description: Cool, Exotic, Fresh, Rich, Peppery, Woody, Rich Earthy, and Herbaceous with peppery top notes and clean spicy, musky back notes.
Balsam Copaiba

(Copaifera officinalis)

Aroma Description: Balsamic, Earthy, Exotic, Resinous, Sensual, Sweet, Warm
Balsam Gurjun

(Dipterocarpus turbinatus)

Aroma Description: Balsamic, Earthy, Exotic, Musky, Resinous, Rich, Sensual, Warm, Woody
Black Seed

(Nigella sativa)

Aroma Description: Bland, Mild, Earthy, Peppery/Spicy, Woody
Black Spruce

(Picea mariana)

Aroma Description: Black Spruce Essential Oil smells fresh, crisp, woody and earthy.
Buddha Wood

(Eremophila mitchellii)

Aroma Description: Deep, woody aroma, lightly sweet, and faintly smoky
Canadian Fleabane

(Erigeron canadensis)

Aroma Description: Complex, with resinous, earthy base notes, with a mild sweet anise middle note
Cardamom

(Elettaria cardamomum)

Aroma Description: Earthy, Green, Herbaceous, Soft, Warm
Cassia Bark

(Cinnamomum cassia)

Aroma Description: Cassia Bark Essential Oil smells spicy, sweet, woodsy and earthy.
Cedarwood, Indian

(Cedrus deodara)

Aroma Description: Balsamic, Earthy, Fresh, Green, Rich, Soft, Warm, Woody
Cedarwood, Port Orford

(Chamaecyparis lawsoniana)

Aroma Description: Coniferous, Earthy, Green, Herbaceous, Slightly sweet, Woody
Chamomile, Cape

(Eriocephalus punctulatus)

Aroma Description: Cool, Earthy, Floral, Rich, Slightly sweet, Soft, Warm
Clary Sage

(Salvia sclarea)

Aroma Description: Clary Sage Essential Oil smells earthy, herbaceous, floral and slightly fruity.
Copaiba Balsam

(Copaifera officinalis)

Aroma Description: Copaiba Balsam Essential Oil smells sweet, woody, resinous and earthy.
Cumin

(Cuminum cyminum)

Aroma Description: Cumin Essential Oil smells spicy, masculine, sensual and earthy.
Davana

(Artemisia pallens)

Aroma Description: Davana Essential Oil smells rich, sweet, fruity and slightly woody. It also has a subtle vanilla note.
Dill Seed

(Anethum graveolens)

Aroma Description: Dill Seed Essential Oil smells fresh, sweet, herbaceous and slightly earthy.
Eucalyptus

(Eucalyptus globulus)

Aroma Description: Fresh, medicinal, woody and earthy.
Fennel

(Foeniculum vulgare)

Aroma Description: Earthy, Exotic, Fresh, Pungent, Strong, Sweet
Fingerroot

(Boesenbergia rotunda)

Aroma Description: Earthy, Fresh, Herbaceous, Slightly camphoraceous, Slightly sweet, Warm
Frankincense

(Boswellia sacra)

Aroma Description: Balsamic, Earthy, Resinous, Slightly sweet, Warm
Frankincense frereana

(Boswellia frereana)

Aroma Description: Balsamic, Earthy, Exotic, Resinous, Rich, Sensual, Slightly camphoraceous, Slightly musky, Warm, Woody
Galbanum

(Ferula gummosa)

Aroma Description: Galbanum Essential Oil possesses an intensely green, fresh leafy odor with a dry woody back-note of balsamic, bark- like character.
Ghandi Root

(Homalomena aromatica)

Aroma Description: Balsamic, Earthy, Exotic, Slightly citrus, Slightly spicy, Woody
Greenland Moss (Labrador Tea) Ledum

(Rhododendron groenlandicum)

Aroma Description: Earthy, Fresh, Herbaceous, Medicinal, Woody
Grindelia

(Grindelia squarrosa)

Aroma Description: Astringent, Earthy, Herbaceous, Medicinal, Pungent, Slightly camphoraceous, Strong
Guaiacwood

(Gonopterodendron sarmientoi)

Aroma Description: Balsamic, Earthy, Musky, Resinous, Slightly floral, Soft, Warm, Woody
Helichrysum

(Helichrysum italicum)

Aroma Description: Helichrysum italicum is also called curry plant because its leaves has a strong curry-like smell.
Helichrysum Odoratissimum

(Helichrysum odoratissimum)

Aroma Description: Astringent, Balsamic, Camphoraceous, Earthy, Fresh, Medicinal
Helichrysum patulum

(Helichrysum patulum)

Aroma Description: Cool, Earthy, Green, Herbaceous, Slightly sweet, Soft
Helichrysum splendidum

(Helichrysum splendidum)

Aroma Description: Balsamic, Cool, Earthy, Fresh, Slightly camphoraceous, Soft
Hemp

(Cannabis sativa)

Aroma Description: Strongly herbaceous, earthy, effervescent green aroma with a slightly bitter, penetrating high note and a clean herbal body note; its long herbaceous drydown is very tenacious
Himalayan Soti

(Cymbopogon flexuosus)

Aroma Description: Cool, Earthy, Exotic, Fresh, Green, Slightly musky, Slightly sweet
Hops

(Humulus lupulus)

Aroma Description: Fresh and sweet with a somewhat sharp (bitter), earthy/herbaceous aroma.
Hyssop

(Hyssopus officinalis subsp. officinalis)

Aroma Description: Hyssop Essential Oil smells fresh, earthy, fruity, woody, slightly sweet and camphorous.
Inula

(Dittrichia graveolens)

Aroma Description: Camphoraceous, Earthy, Fresh, Medicinal, Rich, Slightly floral, Slightly sweet
Juniper, One Seed

(Juniperus monosperma)

Aroma Description: Astringent, Balsamic, Earthy, Fresh, Spicy
Kapoor Kacheri

(Hedychium spicatum)

Aroma Description: Balsamic, Bitter, Camphoraceous, Cool, Earthy, Fresh, Resinous, Woody
Khella

(Visnaga daucoides)

Aroma Description: Cool, Earthy, Fresh, Slightly sweet, Soft
Larch (Tamarack)

(Larix laricina)

Aroma Description: Balsamic, Coniferous, Earthy, Piney, Woody
Lilac

(Syringa vulgaris)

Aroma Description: Cool, Earthy, Exotic, Floral, Fresh, Rich, Sensual, Slightly sweet, Soft
Lotus

(Nelumbo nucifera)

Aroma Description: Exceptionally rich, honeyed, dense floral, earthy and creamy sweet, with a spicy green top note, ripe fruit and coumarin-like undertones, and a tenacious, slightly spicy, deep earthy richness in the drydown.
Manuka

(Leptospermum scoparium)

Aroma Description: Woody, herbaceous, sweet, warm, earthy and balsamic
Mastic

(Pistacia lentiscus)

Aroma Description: Balsamic, Earthy, Herbaceous, Pungent, Resinous, Rich, Slightly bitter, Slightly musky, Slightly spicy, Strong, Warm, Woody
Muhuhu (African Sandalwood)

(Brachylaena huillensis)

Aroma Description: Balsamic, Cool, Earthy, Rich, Sensual, Slightly musky, Soft, Woody
Myrrh

(Commiphora myrrha)

Aroma Description: Warm, earthy, woody and balsamic
Nagarmotha

(Cyperus rotundus)

Aroma Description: Balsamic, Earthy, Exotic, Musky, Resinous, Rich, Slightly spicy, Warm, Woody
Oakmoss

(Evernia prunastri)

Aroma Description: Rich, woody, and earthy
Oakmoss Absolute

(Evernia prunastri)

Aroma Description: Rich, earthy and woody.
Opoponax

(Commiphora guidottii)

Aroma Description: Opoponax Essential Oil smells deep, resinous and woody. The aroma shares some similarity to that of Myrrh Oil.
Palo Santo

(Bursera graveolens)

Aroma Description: Palo Santo Essential Oil smells woody, sweet, and slightly fruity.
Patchouli

(Pogostemon cablin)

Aroma Description: Earthy, Exotic, Musky, Resinous, Rich, Sensual, Slightly floral, Warm, Woody
Peru Balsam

(Myroxylon balsamum var. pereirae)

Aroma Description: Ssweet, fresh, earthy and balsamic.
Pinyon Pine

(Pinus edulis)

Aroma Description: Balsamic, Coniferous, Earthy, Fresh, Piney, Rich, Woody
Plai

(Zingiber montanum)

Aroma Description: Plai Essential Oil smells fresh, spicy, woody and peppery.
Ponderosa Pine Cone

(Pinus ponderosa)

Aroma Description: Balsamic, Coniferous, Earthy, Fresh, Piney, Resinous, Rich, Woody
Rabbitbrush

(Ericameria nauseosa)

Aroma Description: Astringent, Coniferous, Cool, Earthy, Exotic, Herbaceous, Pungent, Slightly bitter, Woody
Red Pine (Norway Pine)

(Pinus resinosa)

Aroma Description: Balsamic, Coniferous, Earthy, Fresh, Piney, Rich, Strong, Woody
Rhododendron

(Rhododendron anthopogon)

Aroma Description: Rhododendron Essential Oil smells sweet, green and floral with underlying woody characteristics.
Ruh Khus (Wild Vetiver)

(Chrysopogon nigritanus)

Aroma Description: Balsamic, Earthy, Fresh, Green, Slightly sweet, Soft, Warm
Sage, True

(Salvia officinalis)

Aroma Description: Earthy, Fresh, Herbaceous, Medicinal, Pungent, Slightly camphoraceous, Slightly spicy, Slightly sweet, Strong, Warm
Sagebrush, Big

(Artemisia tridentata)

Aroma Description: Camphoraceous, Cool, Earthy, Fresh, Herbaceous, Strong
Sandalwood - New Caledonia

(Santalum austrocaledonicum)

Aroma Description: Balsamic, Cool, Earthy, Rich, Sweet, Warm, Woody
Sandalwood - Royal Hawaiian

(Santalum paniculatum)

Aroma Description: Balsamic, Earthy, Rich, Sensual, Soft, Warm, Woody
Sandalwood lancelatum - Australia

(Santalum lanceolatum)

Aroma Description: Earthy, Resinous, Sensual, Slightly sweet, Soft, Warm, Woody
Sandalwood, Australian

(Santalum spicatum)

Aroma Description: Earthy, Resinous, Rich, Slightly sweet, Soft, Vanilla-like, Warm, Woody
Savory, Wild

(Satureja montana)

Aroma Description: Earthy, Fresh, Herbaceous, Slightly spicy, Strong, Warm, Woody
Seabuckthorn

(Hippophae rhamnoides)

Aroma Description: Very subtle aroma, mildly sweet, tart and earthy
Siberian Fir

(Abies sibirica)

Aroma Description: Balsamic, fresh, piney, soft, woody, coniferous, earthy, sweet
Spikenard

(Nardostachys jatamansi)

Aroma Description: Spikenard Essential Oil smells deep earthy, woody and musky.
St. John's Wort

(Hypericum perforatum)

Aroma Description: Balsamic, Earthy, Herbaceous, Warm
Tea Tree

(Melaleuca alternifolia)

Aroma Description: Medicinal, fresh, woody, earthy and herbaceous.
Thuja (White Cedar)

(Thuja occidentalis)

Aroma Description: Camphoraceous, Coniferous, Cool, Earthy, Fresh, Slightly musky
Thuja, Red Cedarleaf

(Thuja plicata)

Aroma Description: Woody, Warm, Earthy
Turmeric, White

(Curcuma zedoaria)

Aroma Description: Earthy, Fresh, Green, Slightly bitter, Warm
Vanilla Oleoresin

(Vanilla planifolia)

Aroma Description: Balsamic, Earthy, Exotic, Rich, Sensual, Sweet, Vanilla-like, Warm
Vetiver

(Chrysopogon zizanioides)

Aroma Description: Woody, smoky, earthy, herbaceous and spicy.
Violet Leaf

(Viola odorata)

Aroma Description: green, earthy and slightly floral
White Sage

(Salvia apiana)

Aroma Description: Astringent, Earthy, Fresh, Herbaceous, Pungent, Rich, Slightly spicy, Strong, Warm, Woody
Xanthoxylum

(Zanthoxylum armatum)

Aroma Description: Balsamic, Earthy, Exotic, Sensual, Slightly bitter, Slightly spicy, Strong, fruity, alluring
Zdravets

(Geranium macrorrhizum)

Aroma Description: Earthy, spicy, slightly floral and herbaceous

Cool

Exotic