St John's Wort

Perennial native to Britain (especially Whales) and Europe. Grows to 32", yellow flowers. Flowers are gathered in midsummer (about St John's Day), but now the whole flower is used.
 

Used for:

• depression, 
• antibacterial, 
• anti-inflammatory, 
• antiviral, 
• pain relief, 
• chronic fatigue syndrome, 
• Lyme disease, 
• fibromyalgia, 
• breast cancer, 
• burns 
• skin disorders, 
• skin infection, 
• warts, 
• skin cancer, 
• psoriasis, 
• cancers, 
• carpal tunnel, 
• Crohn's disease, 
• hemorrhoids, 
• irritable bowel syndrome, 
• cuts, 
• scrapes, 
• abrasions, 
• diabetes, 
• ear infection, 
• herpes-virus, 
• mastitis, 
• headache, 
• counteracts histamine, 
• HIV/AIDS, 
• insomnia, 
• vitiligo. 

Don't use with ACE inhibitors and watch out for too much sun as it makes you burn a bit easier. There can be some bad drug interactions.