ragweed, giant

COMMON NAME: Ragweed, giant
SCIENTIFIC NAME: Ambrosia trifida
FAMILY: Asteraceae
LIFECYCLE: Annual
FEATURES: Tall growing annual species up to 8 feet tall. Leaves palmately vein with three to five large lobes.
Inflorescence is a stalk of small flowers at the apex of the plant similar to common ragweed.
DESCRIPTION: Tall growing, highly competitive summer annual weed species. Flowers in late summer to early fall.

Flower / Seed Head Inflorescence at apex of plant

Flower / Seed Head
Inflorescence at apex of plant

Leaf Leaves with large lobes

Leaf
Leaves with large lobes

Broad View Mature plants

Broad View
Mature plants