Some of the herbs that do harm are the fara bán, nettles, copogs, chicken weed, thistles, the boocoolawn and the súileaca buide. They make the land poor and they smother the crops and on that accout the crops do not grow well. The thistle and chicken weed grow in good land. The fara bán, nettles, copogs, the boocoolawn and the suileaca buide grow in bad land and some of them also grow in wet land. If you boil nettles and drink the juice it is a very good cure for the measles. If a person has a weak heart and he to eat water cress it is said it will cure it.
If a person got a cut and it in danger of getting blood poisoned and to put chicken weed on it, it wont get blood poisoned.