Overview

Xanthium ambrosioides is a plant with a clump forming habit in the genus Xanthium, part of the Asteraceae family, with deciduous foliage. Xanthium ambrosioides grows best in full sun, and tolerates loam soils and neutral pH. Its UK hardiness is rated H7. Suggested uses include wildlife gardens, wildflower meadows and cottage and informal gardens.

About

Xanthium ambrosioides, known as Argentine cocklebur, is a clump-forming deciduous plant belonging to the genus Xanthium in the Asteraceae family. It thrives in full sun on south-facing, exposed sites with fertile, moist but well-drained loam soil of neutral pH. Hardy to UK zone H7, this cultivar is suitable for wildlife gardens, wildflower meadows, and cottage or informal garden settings. It is best propagated by seed and offers seasonal interest during spring and summer.

About the genus

Xanthium (cocklebur) is a genus of flowering plants in the tribe Heliantheae within the family Asteraceae, native to the Americas and eastern Asia and some parts of south Asia.

Wikipedia contributors, "Xanthium", CC BY-SA 4.0Xanthium

Growing conditions

Best soil and position for Xanthium

Sunlight
Full sun
Soil type
Loam
Soil pH
Neutral
Soil moisture
Moist but well-drained
Aspect
South-facing
Exposure
Exposed
UK hardiness
H7

Plant details

Xanthium ambrosioides size, habit and characteristics

Habit
Clump forming
Foliage
Deciduous
Suggested uses
Wildlife gardens, Wildflower meadows, Cottage and informal gardens

Care notes

Pruning and caring for Xanthium ambrosioides

Propagation
Seed
Pest resistance
Generally pest-free
Disease resistance
Generally disease-free

Frequently asked questions

Where is the best place to plant Xanthium ambrosioides?

Xanthium ambrosioides prefers full sun. It suits exposed positions.

What soil does Xanthium ambrosioides need?

Xanthium ambrosioides grows best in loam soil. It prefers neutral soil. Aim for soil that stays moist but well-drained.

Is Xanthium ambrosioides hardy in the UK?

Xanthium ambrosioides has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.

How do I propagate Xanthium ambrosioides?

Seed.