Mugwort has been used as a substitute for tea in England during World War two, so it has a lot of unusual uses. It is also used to combat parasites in the GI tract. With low level toxic effects, use should be limited, and use during pregnancy should be avoided.
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This herbal is useful for a number of conditions:
All parts of the plant are anthelmintic, antiseptic, antispasmodic, carminative, cholagogue, diaphoretic, digestive, emmenagogue, expectorant, nervine, purgative, stimulant, slightly tonic and used in the treatment of women's complaints.
Mugwort medicinal uses:
http://www.naturalmedicinalherbs.net/herbs/a/artemisia-vulgaris=mugwort.php
Mugwort is a common growing plant, that is considered a weed by a lot of people. If you decide to wildcraft this herbal, be sure to stay away from areas that have been sprayed, or are close to roads. Obviously permission for access to the land you intend to wildcraft on needs to be acquired firdt, let's not get anyone shot! A good way to get access to land is to offer the landowner some of the herbs you harvest.
From the Grow network, for wildcrafting use:
https://thegrownetwork.com/for-the-love-of-mugwort-7-uses-for-mugwort/
There are minor risks, that need to be understood before you decide to use this herbal. Use this with care
Known hazards of Artemisia vulgaris:
The plant might be poisonous in large doses. Skin contact can cause dermatitis in some people.