Ageratum houstonianum

Bloom Color: Blue, Pink, Purple, White. Main Bloom Time: Early summer, Early fall, Late summer, Late spring, Mid summer, Mid spring. Form: Rounded.

Ageratum houstonianum is a ANNUAL growing to 0.3 m by 0.3 m at a medium rate.
It is hardy to zone 8. It is in flower from June to October, and the seeds ripen from August to October. The species is hermaphrodite and is pollinated by Lepidoptera .
Suitable for: light , medium and heavy soils. Suitable pH: acid, neutral and basic soils. It cannot grow in the shade. It prefers dry or moist soil.

Landscape Uses:Border, Container, Massing, Rock garden, Specimen. Grows well in ordinary garden soil. Requires a sheltered position in full sun. This species is not hardy in the colder areas of the country, it tolerates temperatures down to between -5 and -10°c. A very ornamental plant, the flowers are very attractive to butterflies. The removal of dead flowers will extend the flowering season. Special Features:North American native, Attracts butterflies, Suitable for cut flowers, Seldomly reblooms.