Working with the Moon and the Seasons

There is a quiet rhythm to making herbal oils that begins long before you pick a single leaf. In the UK, our gardens shift through damp springs, long summer evenings, and crisp autumn mornings. If you follow lunar living, you might notice how the waxing moon draws sap upward, making leafy herbs like mint, lemon balm, and rosemary particularly fragrant. The waning moon, by contrast, is a traditional time for harvesting roots and for letting things settle. For infused oils, the key is to work with dried herbs, not fresh. Fresh herbs contain water, which can turn your lovely oil rancid or breed mould. So your first step is always a careful drying session, ideally on a dry, sunny windowsill or in a warm airing cupboard, away from direct harsh sunlight.

Choosing and Drying Your Herbs

Not every herb suits oil. Soft, high-water herbs like basil or parsley are tricky; they are better used fresh in cooking. For infusions, reach for aromatic or resinous herbs: lavender, rosemary, thyme, sage, calendula petals, chamomile flowers, and dried rose petals. Harvest on a dry morning after the dew has lifted. If you are following lunar traditions, cut leafy herbs during the waxing moon and flowers at full moon. Tie small bundles with string and hang them in a dark, airy place, or spread them on a drying rack. They are ready when they crumble easily and the stems snap. This can take one to three weeks depending on humidity. Never use herbs that show any sign of mildew or dampness.

The Gentle Warm Infusion Method

There are two safe ways to infuse: the cold method (slow, takes four to six weeks) and the warm method (quicker, ready in two to four hours). For beginners, the warm method is reassuring because you can control the temperature. You will need a clean, dry glass jar with a lid, a saucepan, and a heatproof bowl that sits over the pan without touching the water. This is a double boiler. Fill the pan with a few inches of water and bring to a gentle simmer. Place your dried herbs in the bowl—roughly one part herbs to five parts carrier oil by weight. Use a light, stable oil such as sunflower, sweet almond, or olive oil (though olive has a strong scent). Warm the oil gently; it should feel comfortably hot to the touch but never sizzle or smoke. Keep the heat low and stir occasionally. After two hours, turn off the heat and let it cool. For a stronger infusion, repeat with fresh dried herbs and the same oil.

Straining and Storing

Once cooled, line a fine sieve with a double layer of muslin or cheesecloth. Pour the oil through, then gather the cloth and squeeze gently to extract every drop. Compost the herbs. Pour the strained oil into a clean, dry dark glass bottle with a tight-fitting lid. Label it with the herb and the date. Store in a cool, dark cupboard. Most infused oils keep for six to twelve months. If you see any cloudiness, smell a rancid odour, or spot mould, discard it. For extra protection, you can add a few drops of vitamin E oil, but it is not essential.

Using Your Infused Oil for Massage and Salves

Your infused oil is now ready for gentle wellbeing rituals. For a massage oil, warm a small amount in your palms and use it on dry skin, aching muscles, or as a calming chest rub. Lavender and chamomile are lovely before bed; rosemary and thyme are invigorating for morning. To make a simple salve, gently melt 30 grams of beeswax with 200 millilitres of infused oil in a double boiler. Stir until combined, then pour into small tins. This creates a protective balm for rough hands, heels, or elbows. Always do a patch test on your inner arm first, especially if you have sensitive skin or allergies. Avoid using essential oils unless you are trained, as they are far more concentrated than infused herbs.

Seasonal Safety and Lunar Rhythms

Each season offers different herbs, and each has its own safety notes. Spring nettles and dandelion leaves are best dried for oil, but avoid them if you take blood-thinning medication. Summer lavender and calendula are generally safe, but never use them on broken skin. Autumn rosemary and sage make warming oils for cooler months. Winter is a time to use your stored oils and plan next year's garden. Follow lunar living loosely: harvest on a dry waxing moon for above-ground herbs, and on a waning moon for roots. Always dry herbs thoroughly, keep your equipment spotless, and trust your senses. If an oil smells or looks wrong, throw it out. With a little patience, you can create beautiful, safe herbal oils that connect you to your garden, the seasons, and the moon above.