300 FEVERFEW Tanacetum Parthenium Herb Flower Seeds BLOOM TIME: July - Oct HARDINESS ZONE: 5 - 9 (and reseeds itself easily) PLANT HEIGHT: 18 - 24" . . . PLANT SPACING: 18 - 24" LIGHT REQUIREMENTS: Sun - Part Shade . . . SOIL / WATER: Average Feverfew is a traditional medicinal herb. It has citrus scented leaves and daisy like flowers. It has been used for reducing fevers, treating headaches, arthritis and digestive problems.