Be careful of Mugwort.The pollen can cause hayfever. In fact,be careful of herbs altogether! Fine for flavouring food; but some herbs are poisonous! Aconite is lethal!
I do not understand the thread of these certain types of herbs. There are by far way more but I'm guessing you wish to suggest a few for the general public?
"Be careful with herbs", - well be careful with all medicines. Most medicines have a narrow theraputic window, in all areas of medicine. Same goes for foods.
Many herbs are also wonderful... but only if prepared in a very specific manner. Certain portions of a plant may be toxic while the rest remains safe and even beneficial to ingest. Further, many of these magical properties of herbs are born through myth and legend rather than physical or medical properties of the herb. High John Root (High John the Conquerer or High John the Conqueroo) for example is commonly used in mojo bags and in a wide range of magic within the Hoodoo system and is generally considered quite beneficial. However if you ingest it you will likely find yourself wracked with cramps and an assortment of digestive problems.
My suggestion in general is to do your homework. Study herbalism beyond a single book or a single online reference. Discover how it is used and why. Learn, medically, why an herb is supposed to be helpful for certain conditions, and how exactly it is prepared and used.
Otherwise you're more likely to do more harm than good.
Iposted this for a friend Ardor she wanted a list of herbs to see if any herbs effects (like what they are used for/ what specific spell do they help with) correspond so she could substitute
Then you should have mailed the list to your friend!
Take notice of awaketoolong! And by the way; I grow rhubarb.The stalks are wonderful! The leaves are poisonous; but they clean aluminium (Aluminum for the Americans!) very well indeed.Boil the leaves in a stained pan, and it positively gleams!