California-bur

Xanthium strumarium

Xanthium

Asteraceae

Native Plants

Zone 3–10

🐾 Pet-Safe

🌱 Beginner Friendly

California-bur is a hardy, weedy annual that thrives in disturbed soils with minimal care. Plant in a sunny to partly shaded location and water occasionally during dry spells. Note that the spiny burs can be a nuisance and the plant spreads readily, so manage carefully to prevent unwanted spread.

Care Requirements

Care Level

Low

Sun

Partial Shade

Water

Moderate

Growth Rate

Moderate

Mature Height

12″ – 36″

Soil

loam

Life Cycle

Perennial

Spacing

24″

Watering Schedule

Every 7-10 Days • Water Moderately; Allow Soil To Dry Slightly Between Waterings

Soil pH

6 – 7

Temperature

-40° – 85°F

Mature Spread

up to 24″

Root Depth

Medium

Foliage

Medium

Propagation: Seed, Cutting

Ecology & Origin

Native to

Afghanistan

Albania

Algeria

Austria

Azores

Baleares

Baltic States

Belarus

Belgium

Bulgaria

Cambodia

Central European Rus

China North-Central

China South-Central

China Southeast

Corse

Cyprus

Czechoslovakia

East Aegean Is.

East European Russia

Attracts

🐝 Birds

Safety & Use

⚕ Medicinal

🐾 Pet-safe

Sources

Data: trefle, usda

Image: trefle.io — Taken Sep 28, 2017 by Emma Flashman (cc-by-sa)

Hardiness Zones

Check your zone:

Available From (0)

No nurseries currently have this species in stock.