Part used: flowers whole stem
Colour range: pink, red, green, yellow
Ph sensitive; better pinks and reds with acid assist.
Mordant: alum, ferrous sulfate
Light fastness: good for yellows and grees, medium for pinks and reds.
Cold dyeing: yes
Hot dyeing: yes
Low Impact Method: yes
St. Johns Worth grows in the wild commonly, and is well known as an ancient folk medicine. St. John's wort is most commonly used for "the blues" or light depression and symptoms that sometimes go along with mood such as nervousness, tiredness, poor appetite, and trouble sleeping.
In natural dyeing it will give a vast range of colours depending on the acidity of your dye bath and the mordant used.
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