Flat-top Whiteweed (Ageratum corymbosum) is a perennial herb native to Mexico and Central America, featuring clusters of white, fluffy flowers that attract pollinators.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun to Partial Shade
75% intensity
Thrives in at least 6 hours of direct sunlight daily, but tolerates some shade.
Consistent Moisture
50% intensity
Prefers evenly moist soil.
Well-drained
50% intensity
Warm
50% intensity
Prefers temperatures between 18-24°C during the day and slightly cooler at night.
Moderate
50% intensity
Feed regularly during the growing season with a balanced liquid fertilizer.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | No |
Non-toxic
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water regularly, keeping the soil consistently moist but not waterlogged. Allow the top inch of soil to dry out slightly between waterings, especially during dry periods.
Reduce watering in cooler months when growth slows to prevent root rot. Ensure good drainage.
Pinch back young plants to encourage bushier growth. Deadhead spent flowers regularly to promote continuous blooming and maintain an attractive appearance.
Light pruning can be done in late winter or early spring to shape the plant and remove any dead or damaged stems.
Propagate from seed sown indoors in early spring, or outdoors after the last frost. Cuttings can also be taken from semi-hardwood in mid-summer and rooted in moist potting mix.
Both methods generally yield good results with proper care.
Repot young plants annually in spring to provide fresh soil and more space for root growth. Mature plants can be repotted every 2-3 years or when rootbound.
Use a well-draining potting mix and a pot only slightly larger than the current one.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Flat-Top Whiteweed (Ageratum corymbosum)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Ageratum |
| Species | Ageratum corymbosum |
Similar in genus Ageratum
Answers based on plant encyclopedia data
