Yesterday evening the dog decided to take our walk around behind the rescue squad building. A variety of wildlife no doubt travels this corridor, so it was not surprising that his nose led us in this general direction. My nose is not as sensitive as the dog’s, but my eyes are drawn to things that he probably thinks are dull – like a white flower blooming at the corner of the building.
White flowers that are not asters are not common at this time of year. In fact, the only white flowers that come to mind are the aforementioned asters and nodding ladies tresses. The plant that caught my eye was neither of these; it was heal-all (Prunella vulgaris).
You all know heal-all (alternatively known as self-heal, heart-of-the-earth, carpenter weed, blue curls, sicklewort, and woundwort): it is the short, stocky plant that grows in your yard, sporting purple blossoms throughout the warm seasons. The key point here is that it normally has purple blossoms. The plant I encountered last night was white. There are rogues in every population.
Most people probably consider heal-all a weed. It disrupts the perfect lawn. Ah – how we have changed. Not all that long ago this was a plant sought by people from all walks of life, for it is edible and medicinal, making it highly desirable.
The modern lawn is often a barren wasteland, botanically speaking. Chemically controlled to prevent all but a very few plant species from growing, not to mention to keep out all sorts of insects, it may look like a lovely plush green carpet, but it’s lacking in character and life. Once upon a time, the lawn was a veritable salad bowl, chocked full of all sorts of edible plants, not the least of which is/was heal-all. Highly nutritious, if bitter, it used to find its way into salads, soups and stews. It could even be boiled and used as a pot herb. Considering the amount of heal-all in my lawn, I could open a U-Pick stand if it was still popular!
As important as this plant was to supplement the human diet, it was as a medicinal herb that it found its niche. At one point in time, it was considered to be a panacea. Have a sty in your eye? Use a rinse made from Prunella. Have a fever? Prunella will save the day. Stomach ailment? Diarrhea? Internal bleeding? Wounds that won’t heal? Prunella to the rescue!
As it turns out, this humble herb, which is mostly Eurasian in origin (although recent studies have turned up a native variety, Prunella vulgaris elongata), contains many compounds that are truly beneficial in the field of medicine, not the least of which is a strong anti-bacterial property. This quality alone would explain why the plant was so often sought to help heal wounds in the days before germs were common knowledge.
Modern medicine is now studying the effects of heal-all as a treatment for herpes, AIDS, cancer and diabetes.
If food and medicine aren’t enough to convince you to keep heal-all in your yard, then consider this: it is an important nectar source for a large variety of native pollinators (bees and butterflies), not to mention that its leaves are a food source for the larval form of the gray marvel moth.
While I’ve taken the time to look at heal-all in the past, it wasn’t until this white form grabbed my attention last night that I decided to take another look. There’s a moral here: it’s often pays to look twice at those things which we take for granted. There might be a hidden quality that we’ve missed in our assumption of the common.