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Lousewort, Bumblebee Food and Medicinal Herb

Lousewort (Pedicularis canadensis) is an interesting plant. It’s a medicinal herb said to be effective at muscular pain relief. The bumblebees love it!

Rosy colored variety of Pedicularis
Rosy colored variety of Pedicularis, with a bumble bee visiting.
A pale yellow-colored lousewort.
A pale yellow-colored lousewort.
Some lousewort, showing whole plant. It gets larger and taller as the season progresses.
Some lousewort, showing whole plant. It gets larger and taller as the season progresses.

An interesting find

In May of 2014, I noticed an interesting plant. Well, I’m *always* noticing interesting plants, so it wasn’t the first time to notice an interesting plant, but the first time to notice lousewort.

It was growing in the cedar grove below the pond, in the same area as the rattlesnake plantain and twayblade orchids. Although I’ve walked around in there before I had never noticed the the greenish-gray ferny fronds.

At the time it wasn’t blooming, but I immediately recognized it from long ago when I studied with a Master Herbalist in Bay St. Louis, MS. It’s hard to believe that was nearly 25 years ago now. Her name was Amelia Plant and we’ve long since lost touch, but I often wonder what she’s been up to. She had brought me and a few of her other students on a gathering trip in MS and that was one we collected.

Lousewort is semi-parasitic

Its roots feed off of the roots of neighboring plants, but it doesn’t require a host to live. Because of the possibility that it’s feeding from neighboring plants, if you plan to use it as medicine, it’s important to make sure the neighbors aren’t poisonous plants. The variety of lousewort that grows at Wild Ozark is Pedicularis canadensis.

Some of them bloom with a bicolor rosy/white tubular flower and some have pale yellow, nearly white flowers. Medicinally, the above-ground parts are used for skeletal muscle pain. I haven’t tried it yet, but I did just harvest some yesterday to put up for later use. It’s not a narcotic, so the pain relief isn’t likely to be as effective as narcotic drugs.

This herb is reported to combine well with skullcap and black cohosh to make a pretty good muscle relaxer. Black cohosh affects female hormones, though, so be aware of that and perhaps use a different herb, like black haw or skunk cabbage as a substitute if you have a hormone-influenced issue.

  • Always consult your physician and do your own research before using herbs – the information I provide through my newsletters and website is only meant to be a starting point and is NOT intended to be taken as medical advice. I’m not a doctor, have no medical training, and am not offering medical advice.

Lobelia inflata is another local medicinal herb that would go well with this combination, but the seeds (the part most medicinal) are potent. Use caution in dosage.

Where to Find Lousewort

The lousewort plants I found are growing in a moist cedar grove under plenty of shade. I’ve also seen them growing in partly shady areas alongside our county road. This spring I’ll be trying to propagate some of the ones here. If I’m successful with that and you want to get some, let me know. If I’m able to get in, I’ll be at the Fayetteville Farmer’s Market this year. Otherwise you’ll have to make trip out to the Wild Ozark Nature Farm 🙂

References for my information and more on using lousewort at these sites:

  • http://7song.com/pedicularis-lousewort-monograph-pedicularis-as-a-skeletal-muscle-relaxant/ (sorry, can’t link directly because it’s not a secure website, but it is safe if you want to copy and paste the URL)
  • https://www.altnature.com/gallery/woodbetony.htm

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