The chamomile harvest is in full swing over here. This year I have the two varieties of the herb that are grown for medicinal use: German (Matricaria chamomilla) and Roman (Chamaemelum nobile).
The chamomile plant is used for making herb beers and for the treatment of toothaches, earache, neuralgia as well as swelling and skin conditions. In general the “inhalation of the vaporized essential oils derived from chamomile flowers is recommended to relieve anxiety, general depression”. However, if you wanted to pick a plant for a task, the extract of German chamomile contains a higher proportion anti-inflammatories (chamazulene) while Roman is considered better for soothing skin conditions.
I partly grow chamomile to harvest the flowers but the chamomile plant itself is like a tonic for the garden. It is pest and disease free and boosts the health of all crops that it grows alongside but improves the flavour of brassicas and onions. I have them interspersed with other plants to encourage insects and improve the overall health of the garden.
The German variety is native to Europe and western Asia and is an upright annual that can grow to 1 metre tall. The Roman variety is native to western Europe and north Africa. In theory it is a low-growing perennial at about 20cm in height. However, for me, the roman chamomile seeds have produced a plant that is almost as tall as the German chamomile. Both produce small, daisy-like white flowers with yellow centres. This yellow centre is flat on the German variety and raised in the Roman variety (see pictures below).
At the start I was picking the blossoms daily to get them just when they open for best flavour. However they need to be dried immediately after harvesting and for this they need to be laid out flat on a mesh screen in a warm place indoors, out of direct sunlight. This is causing a space issue as it takes several weeks for the flowers to dry completely.
For more information on chamomile there is an interesting article published here: Srivastava JK, Shankar E, Gupta S. Chamomile: A herbal medicine of the past with bright future. Mol Med Report. 2010;3:895–901.