Stats

Lifespan

Perennial

Size

Small

Diet

Photosynthetic

Biome

Temperate grassland

Range

North America

Movement

Sessile

Breeding

Seeds

Defense

Toxins

Status

Common

About

Western ragweed is a perennial plant that grows in the dry grasslands of the western United States and Mexico. It is known for its bright yellow flowers that bloom in the summer and its seed heads that are often mistaken for dandelions.

Life cycle

1. 1.
   seed

   A dormant seed waits for water and warmth before germinating.
2. 2.
   sprout

   A first shoot emerges with cotyledon leaves and a tap root reaching down.
3. 3.
   sapling

   A young plant grows true leaves and a stem or trunk, putting on height each season.
4. 4.
   mature

   Fully grown, flowering or fruiting at adult size.

Learn more

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Taxonomy

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Asterales

Family

Asteraceae

Genus

Ambrosia

Species

Ambrosia psilostachya