Arctium amplissimum is a robust herbaceous biennial plant known for its large, broad leaves and burdock burrs. It thrives in disturbed soils and along roadsides.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun to Partial Shade
75% intensity
Prefers at least 6 hours of direct sunlight daily.
Regular
50% intensity
Keep soil consistently moist but not waterlogged.
Well-drained
50% intensity
Moderate
50% intensity
Prefers temperatures between 15-25°C.
Low
25% intensity
Requires minimal fertilization; use a balanced liquid feed annually if needed.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Arctium amplissimum prefers consistently moist soil. Water deeply when the top 2-3 cm of soil feels dry. Avoid waterlogging, as this can lead to root rot.
Reduce watering frequency during winter months when the plant's growth slows down. Good drainage is crucial.
Pruning is typically not required for Arctium amplissimum, as it is a biennial that dies after setting seed. If you wish to prevent self-seeding, deadhead spent flower stalks before they develop burrs.
Remove any dead or damaged foliage in late autumn or early spring.
Arctium amplissimum is best propagated by seeds sown directly outdoors in early spring or autumn. Seeds can also be started indoors a few weeks before the last frost.
Germination can be erratic; stratification may improve success. It self-seeds readily in suitable conditions.
Repotting is generally not applicable as Arctium amplissimum is a biennial, meaning it completes its life cycle in two years and dies after flowering. If grown in pots for temporary display or for seed starting, repot young seedlings into larger containers as they grow, ensuring adequate space for root development.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Arctium Amplissimum (Arctium amplissimum)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Family | Asteraceae |
| Genus | Arctium |
| Species | Arctium amplissimum |
Similar in genus Arctium
Answers based on plant encyclopedia data
