Plant: Yarrow, known botanically as Achillea (ak-il-EE-a). Origin: From many parts of the world's temperate zones.
Characteristics: Used in northern borders or rock gardens, this perennial, in many varieties, may grow like a weed. Fern-like foliage is attractive and drought-resistant but not often seen in Florida landscapes. In the wild, flower heads are usually yellow or white and height varies from four inches to two feet. The aromatic leaves and flowers have been used for herb tea and as medicinal herbs in many parts of the world in the past.
Growing tips: A sunny spot with not too rich soil and not too much water is recommended farther north, but fertilizer twice a year and experimentation may be necessary in the Tampa Bay area to have flowers during spring and summer.
Shown: Lavender-pink yarrow may be Achillea millefolium rosea, grown for many years in a border facing west after a friend gave it to Marilyn Underberg of St. Petersburg.