Chestnut Herbal School

Garlic Mustard (Alliaria petiolata)

Written and Photographed by Juliet Blankespoor

Garlic mustard

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Garlic mustard (Alliaria petiolata, Brassicaceae) is one of our earlier wild spring greens. With a flavor slightly reminiscent of mild arugula and roasted garlic, it makes a nice addition in salads with milder wild greens like chickweed and violets. I find that its flavor doesn’t mellow when cooked, as do many other brassicas, and so I prefer it raw. It also makes a tasty pesto, probably the most popular dish made of garlic mustard.

Native to Eurasia, and long eaten as a green there, it is thought to have first entered North America by way of Long Island, NY, known for being the point of origin for most of the problems in our country. Garlic mustard is one of the more “invasive” invasives in that it can thrive deeper in the forest, unlike most non-native opportunistic plants, who tend to stick close to the humans, and the open grounds we create. It occupies a similar niche as many spring ephemerals, like spring beauty and bloodroot, and can easily outcompete them, with its nifty biochemistry and lack of native insect and microbial predators. It appears that some compounds in garlic mustard are indirectly allelopathic (inhibiting the growth of neighboring plants), and have a negative affect on mycorrhizae (symbiotic plant root/fungal relationships). Maple and Ash trees growing in forests with garlic mustard in the understory grew much slower than the same trees in forests without garlic mustard. Even forests with a history of garlic mustard, but no live plants grew slower, presumably from a persistent compound in the soil.

Meet The Green Mastermind Behind Blog Castanea:

JULIET BLANKESPOOR is the founder, primary instructor, and Creative Director of the Chestnut School of Herbal Medicine, an online school serving thousands of students from around the globe. She's a professional plant-human matchmaker and bonafide plant geek, with a degree in botany and over 30 years of experience teaching and writing about herbalism, medicine making, and organic herb cultivation. Juliet’s lifelong captivation with medicinal weeds and herb gardening has birthed many botanical enterprises over the decades, including an herbal nursery and a farm-to-apothecary herbal products business. 

These days, she channels her botanical obsession through her writing and photography in her online programs, on her personal blog Castanea, and in her new book, The Healing Garden: Cultivating and Handcrafting Herbal Remedies. Juliet and her family reside in a home overrun with houseplants and books in Asheville, North Carolina.

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2 thoughts on “Garlic Mustard (Alliaria petiolata)

    • Sara Kinney says:

      I haven’t seen any research about cyanide in garlic mustard. According to John Kallas of the Institute for the Study of Edible Wild Plants and Other Forageables, garlic mustard has higher levels of beta-carotene, calcium, iron, zinc, manganese, and vitamins E and C than cultivated greens, such as spinach, kale, and collards.

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