The Edit: Conifer and Spice Oils for the Darker Months

When the evenings close in, we reach for two families of scent: crisp conifers and warm spices. This edit covers seven oils from our reference, three simple winter essential oil blends for a diffuser, and the safety points that matter for each. That last part matters most if you share your home with cats, dogs, young children or someone who is pregnant.

The short version is this. Use three to five drops at a time. Diffuse in short sessions, and keep oils well away from candle flames. Check every oil against the animals and people in the room before you switch the diffuser on.

Why conifer and spice oils suit the season

This is about scent, not health. Conifer oils smell like a walk through woods on a cold morning: fresh, green and a little resinous. Spice oils smell like a warm kitchen in December. Together they give a room a seasonal feel without anything on the stove. A citrus top note brightens the mix, and that is why oranges turn up in so many Christmas diffuser blends.

The conifers

Balsam fir is steam distilled from the needles and twigs. It smells fresh, crisp and coniferous, and as a top note it adds lift to a blend. It works with other conifers, citrus, floral, mint and herbaceous oils. Tisserand and Young advise against using it once it has oxidised, and AromaWeb suggests keeping it out of the bath. Treat it with caution around dogs and cats, because it is a close relative of the pine oils on Pet Poison Helpline’s list.

Scots pine comes from the needles. It is fresh, woody, earthy and balsamic, another top note. Tisserand and Young list no special precautions beyond avoiding oxidised oil. Pet Poison Helpline lists pine oils as toxic to both dogs and cats, so we rate it “avoid” for both. Do not diffuse it anywhere pets spend time.

Cypress is also distilled from the needles. It is fresh, woody and slightly coniferous, and sits in the middle of a blend. It appears on the IFPA list of oils used in pregnancy. It is rich in pinene, so take care around pets.

The spices

Cardamom is distilled from the seeds and smells spicy, woody, rich and sweet. It is a middle note that works best blended with other spice, citrus and wood oils. It contains 1,8-cineole, which can cause breathing problems in young children. Tisserand and Young advise against using it on or near the faces of infants and children, and we rate it from age 10.

Black pepper is distilled from peppercorns. It is crisp, fresh and peppery, and blends with almost anything, including spice, citrus and floral oils. Tisserand and Young list no special precautions apart from avoiding oxidised oil. It is on the IFPA pregnancy list.

Nutmeg is distilled from the seeds and smells spicy, sweet and woody, more fragrant than the jar in your cupboard. It needs respect. Tisserand and Young note that it may be carcinogenic and can be psychotropic in high doses, and they suggest no more than 0.8% on skin for East Indian oil. We suggest no skin use before age 6, and keep the bottle well out of reach. One drop is enough in any blend.

Two more spice oils need the most care of all. Cinnamon leaf and clove bud irritate skin and mucous membranes. They should never go in the bath and are best avoided in pregnancy. Pet Poison Helpline lists both as toxic to cats, and cinnamon to dogs as well.

Three diffuser ideas

Each idea uses 5 drops in a typical ultrasonic diffuser.

Forest walk: 2 drops balsam fir, 2 drops cypress, 1 drop lemon. It contains no pine, but fir and cypress still call for caution around pets, and lemon is a citrus oil, so keep cats in mind.
Spiced orange: 3 drops sweet orange, 1 drop cardamom, 1 drop black pepper. Do not use it in rooms with cats, because of the orange. The cardamom means it is only for rooms where children under 10 are not present.
Mandarin and ginger: 3 drops mandarin, 1 drop ginger, 1 drop black pepper. Mandarin is cold pressed from the peel, smells sweet and mellow, and is not phototoxic. Ginger is a warm, peppery root, and safety references list no particular hazards for the distilled oil. This blend is still not for rooms with cats, because of the citrus.

For more essential oils for winter evenings, see our seasonal comfort blends.

Diffusing sensibly

Go light. Our guide puts three to five drops in a typical ultrasonic diffuser as plenty for most rooms.
Diffuse in bursts. The Tisserand Institute recommends intermittent diffusing: ideally 30 to 60 minutes on, then 30 to 60 minutes off, with some fresh air coming in. After that long, people stop noticing the scent anyway, so longer sessions add little.
Mind the flames. The Tisserand Institute notes that essential oils are flammable. Keep them away from naked flames, and it does not recommend burners heated by a candle. In a season of Advent candles and dried wreaths, that point is worth taking seriously.
Keep conifers fresh. Old, air-exposed conifer oils oxidise. Keep them out of skin blends, cap the bottles promptly and store them somewhere cool.

Pets, children and pregnancy

Cats are the most sensitive. Citrus, pine, cinnamon and clove oils are all on Pet Poison Helpline’s list for cats, and pine and cinnamon are on it for dogs too. If you diffuse at all, keep sessions short and leave a door open so animals can leave the room. Never apply oils to a pet. Our essential oils and pets guide goes into more detail.

Keep cardamom away from children under 10 and away from any child’s face. Store nutmeg out of reach.

In pregnancy, cypress, black pepper and mandarin are on the IFPA list of oils used in pregnancy. Cinnamon and clove are best avoided. This is general information, not medical or veterinary advice. Ask a doctor, pharmacist or vet if you are unsure about your own situation, and you can check any single oil in our oil safety lookup.

If you would like to build your own blend, our blend builder lets you combine these oils by note and flags the safety points for each one as you go.