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Dogfennel

WEEDS

GENUS/SPECIES


Eupatorium capillifolium

FAMILY


Asteraceae

SYNONYMS


Common: Dog Fennel

DISTRIBUTION


Southeastern US

  • Massachusetts southward to S Florida
  • Florida westward to Texas
  • Texas northeastward to Massachusetts

Comments

This species reaches its best development on the coastal plains, and is most often found on undisturbed sandy soils although it can grow on a variety of sites. Although typically 4 to 5 feet in height, it may become as tall as 9 feet. Dogfennel sends new shoots each spring from a woody base. It has very finely-divided leaves whose lobes are very narrow; these are alternate (at least on the upper sections of mature plants). This plant blooms from late August to early November, depending upon location, and shaded plants typically bloom later than those receiving full sunlight. Pollination is achieved mainly by wind. Interestingly enough, many closely related species in the same genus (such as joe-pye weed) are favorite sources of nectar for bees, butterflies, and other insects.