The Tanacetum pathenium is commonly named feverfew and is native to Greece, Turkey and the Caucasus. The Tanacetum pathenium is a genus from aster or sunflower family (Asteraceae or Compositae). Other synonyms used for Tanacetum pathenium are Chrysanthemum pathenium and Pyrethrum pathenium.
The inflorescence is daisy-like and also like camomile. The smell of the leaves also remind you of camomile, but the leaves of camomile are thinner and more divided and the inflorescence is rounder.
The inflorescence looks like one flower but it is actually a cluster of many small flowers. The yellow hart of the inflorescence consists of tubular florets (disc florets) and the white part consists of ray florets. In my garden I have feverfew with flower heads that are almost completely filled with white ray florets. There are also plants of which the inflorescence consists of more yellow disc florets. The inflorescence is very suitable as cut flower.
The feverfew has a sturdy branched stem and depending on the Tanacetum pathenium is positioned it grows up to about 12 to 32 inches (30 to 80 cm) tall.
Because feverfew is used as a medicine for several conditions it is widely spread across the world. And because the Tanacetum pathenium rapidly spreads by seed it is found in many places.
If you leave the spent flowers the seeds will spread and cover your garden fast. However the plants are easily removed or moved so they are not necessarily a big problem. If the original plant dies in the winter, then the seedlings will replace it so if you want you will always have feverfew in your garden.
The Tanacetum pathenium is a very easy undemanding plant that blooms long and abundantly which makes it an asset to your garden. After flowering a large part of the plant dies. What remains is a compact little plant that is evergreen during a mild winter.
Exposure: sun/ part shade
Foliage colour: green
Flower colour: white
Flowering time: June - October
Hardiness: -30 ºC (-22 ºF)
Height: 32 inches (80 cm)