Horseweed
Horseweed
Erigeron canadensis
Plantae
COMMON

Stats

Lifespan
Annual
Size
Medium
Diet
Photosynthetic
Biome
Temperate grassland
Range
North America
Movement
Sessile
Breeding
Seeds
Defense
Toxins
Status
Common

About

Horseweed is a fast-growing annual weed native to North America that can shoot up to 2 metres tall in a single season. Its tiny white daisy-like flower heads cluster along tall, bristly stems and release fluffy wind-borne seeds — making it one of the first plants to colonise disturbed ground.

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

Taxonomy

Kingdom
Plantae
Phylum
Tracheophyta
Class
Magnoliopsida
Order
Asterales
Family
Asteraceae
Genus
Erigeron
Species
Erigeron canadensis