I'm busy sowing seeds at the moment and one of the crops that I sowed a couple of weeks ago is just emerging from the soil, Coriander, Coriandrum sativum. Such a useful plant, its seeds can be dried and used whole, crushed or ground in cooking as can its bright green, aromatic leaves. The oil has a long history in traditional medicine, especially in Ayurvedic and Chinese medicines and seeds were even found in the tomb of Rameses 11, probably because the oil's strong antiseptic and deodorizing effect would have made it invaluable in the embalming process.
The essential oil is extracted most commonly from the crushed ripe seeds and is a colourless to pale yellow liquid with a sweet, woody-spicy and slightly musky fragrance. The principle chemical constituent is linalool known for it's anti-microbial and antiseptic properties but also as an anti spasmodic which explains it's role in calming digestion, reducing flatulence and easing stomach cramps.
Coriander oil has a warming, analgesic effect that helps to relieve pain and stimulate the circulation making it useful for stiffness and pain in joints and muscles.
The light, herby aroma energises and is a natural tonic for flagging spirits and energy, helping to lift apathy and feelings of nervous exhaustion.
Try using Coriander in a mouthwash; mix 1 to 2 drops of the oil to a teaspoon of glycerine or Calendula tincture, add to water and use to gargle or rinse the mouth in the event of gum infection.