I swear, mustard is immortal. At least, the kind I scattered in one of my raised beds is.

I had a packet of giant red mustard seeds that were initially intended for microgreens. When I cleared out a neglected spot in the front yard and turned it into a slightly raised bed, I didn’t really have anything to plant in it. So, I chucked a handful of the mustard seeds in there figuring that, at worst, I’d get some sprouts that would die back and essentially act as “green manure.” At best, I’d get some tasty mustard greens.

This was two summers ago. I have not sown mustard since. I am still harvesting tons of huge, fresh mustard leaves.

Right before sitting down to write this, I went out to grab some leaves to use on sandwiches and as salad for my bearded dragon, Cecil. (His salads use collards, turnip tops, kale, or mustard as a base, with various other vegetables, limited fruits, a dusting of calcium and/or vitamin powder, and a sprinkle of dried black soldier fly larvae. I swear, I put more effort into his nutrition than I do my own.) That got me thinking — I’m familiar with the spell uses of mustard, and I’ve heard the bit of Christian folklore about “having faith as small as a mustard seed” before, but what else is out there? What more does mustard have to offer?

Mustard Magical Properties and Folklore

Mustard, as a condiment, is old. Very old. In ancient Rome, people would grind mustard seeds with wine and use the resulting paste just like we use mustard today.

(Believe it or not, the easiest way to temper the heat of mustard is to change the liquid component. Mustard seeds, on their own, don’t really taste like much when compared to mustard as a condiment. They need to be crushed and mixed with a liquid to really express their full flavor. Using water to make a mustard paste creates a very hot mustard. Acids, like wine or vinegar, temper the heat by altering the enzymatic reactions within the crushed mustard.)

Mustard is a member of the Brassica family. That means that it’s related to broccoli, kale, cabbage, turnip, Brussels sprouts, cauliflower, and kohlrabi.

In traditional Chinese medicine, mustard is used for respiratory problems, skin conditions, and pain in the joints or muscles. Mustard is actually pretty useful for muscle or joint pain, as it’s a counterirritant that encourages blood flow to an area — similarly to the way that we use capsaicin cream today.

In early Western medicine, mustard seeds were crushed, placed in a protective dressing (usually flannel), and applied to the body to warm it, improve blood flow, and speed healing. This was most commonly used for issues like joint pain, muscle strains, and chest congestion. While it has since become less popular than standardized preparations of compounds like capsaicin or menthol, it is still sometimes used as a home remedy for aches, pains, or colds.

A bit of German folklore advises that new brides should sew mustard seeds into the hems of their wedding gowns. This helps ensure that they don’t get bossed around in their new households. It also helps ensure good luck.

Mustard is, like many hot or irritating spices, used to repel things. In both Denmark and India, scattering mustard seeds around the outside of a property was believed to keep evil away.

This is something we see time and time again — the vast majority of evil-repelling plants that I’ve encountered are also good at repelling physical pests, as well. Mustard is no exception. The leaves have a spicy, subtly bitter flavor that makes them pretty unpalatable for a lot of pests. (I got to see this in action when I was cleaning cabbage loopers off of my kale and broccoli. The mustard was untouched.)

In general, mustard is considered a useful magical herb for any workings that deal with healing, repelling evil, or attracting good luck.

Mustard is associated, probably unsurprisingly, with the element of Fire.

Using Mustard

Looking at its historical uses, mustard is one of those interesting herbs that can be a bit misleading. There are a lot of charts and tables out there that’ll tell you basic information — for luck, use x, y, or z. For love, use a, b, or c — but don’t go any further than that.

Here’s the thing: Mustard acts, in all ways, as a repellent. Medicinally, it inflames tissues, bringing in more blood flow to flush out whatever the problem is. Horticulturally, the heat and flavor in the leaves repel insects and sensitive herbivores. In folk magic, it repels evil.

While mustard is an effective herb for attracting good things, this appears to be because, traditionally, it chases away the bad. Once evil is repelled, good fortune and healing can come in.

For this reason, I don’t really recommend using mustard on its own. If you really want to dial in a working for good luck or healing, combine it with herbs that focus on those things. Mustard will help clear away the bad, and they will help bring in the good.

Since mustard is typically available as seeds, it’s also a useful tool for sympathetic magic. To increase one’s luck, combine fresh, untreated mustard seeds with luck-drawing herbs like alfalfa (another herb that’s generally better to not use alone), fenugreek, dried chamomile, or crushed allspice berries. Scatter the mixture outside declaring that your luck will grow as the mustard seeds grow.

On the other hand, if your goal is to purify or banish, then mustard is fine on its own. Scatter the seeds outside, across the area in front of your front and back doors, etc. Sprinkle bits of ground mustard powder in the corners of your rooms and under your door mat. Tell the seeds that you want them to repel evil, and thank them for their help.

Mustard is a delightful, delicious, and nutrient-dense addition to any meal. It also packs quite a metaphysical wallop — while its hot and bitter compounds are great at keeping garden pests away, it’s equally good at repelling evil. It’s a very useful addition to spells to attract good things, as it’ll help keep away the bad and make room for more blessings in your life.