Ageratum conyzoides mexicanum (Sims) DC.
Ageratum mexicanum Sims
Ageratum pinetorum (L.O.Williams) R.M.King & H.Rob
Ageratum wendlandii Vilm.
Alomia pinetorum L.O.Williams.
Carelia houstoniana (Mill.) Kuntze
Common Name: Ageratum
Ageratum is a usually erect, and often much-branched, annual plant growing 30 - 100cm tall.
The plant is sometimes harvested from the wild for local medicinal use. Very ornamental, it is often grown in gardens[
C. America, north to south-western N. America - Mexico; Caribbean.
Pine woods and cultivated ground[
]. Disturbed sites, mainly coastal[
]. Locally common in fields, roadsides and waste places at elevations up to 1,700 metres[
|Other Uses Rating||
|Cultivation Status||Ornamental, Wild
Tolerates temperatures down to between -5 and -10°c[
Grows well in ordinary garden soil[
]. Requires a sheltered position in full sun[
Often grown as an ornamental, the plant has escaped from cultivation and become naturalised in many areas[
The flowers are very attractive to butterflies[
The removal of dead flowers will extend the flowering season.
The juice of the plant is used externally to treat cuts and wounds[
The plant yields an insecticide[
Seed - surface sow early spring in a light position in a greenhouse. The seed usually germinates in 1 - 3 weeks at 20°c[
]. When large enough to handle, prick the seedlings out and plant them out after the last expected frosts.