Botanical Overview
Bastard wormwood (Ambrosia artemisiifolia) belongs to the Asteraceae family. While not among the most extensively documented medicinal plants, this species has recorded uses that warrant attention from researchers and practitioners. The daisy family (Asteraceae) is one of the largest plant families, characterized by composite flower heads (capitula) that contain many small florets surrounded by bracts. Plants range from tiny alpine herbs to large tropical trees. The family includes many medicinally important species with bitter compounds and essential oils.

General Description
Ambrosia artemisiifolia, with the common names common ragweed, annual ragweed, and low ragweed, is a species of the genus Ambrosia native to regions of the Americas.
Family Context
The Asteraceae family is extremely large and diverse. Notable medicinal members include:
- Yarrow — 63 documented uses
- Gobo — 63 documented uses
- Mugwort — 55 documented uses
- Sunflower — 52 documented uses
Geographic Distribution
Bastard wormwood has been recorded in Taiwan, and United States.
Traditional Uses
Bastard wormwood has been traditionally used for immune system support.
Immune system support.
- Tumor
Immune support involves taking the herb as a decoction or tincture over extended periods. The active compounds stimulate immune cell activity and provide antimicrobial protection.
Active Compounds
Phytochemical research has identified 13 compounds in this species, including a diverse array of phytochemical classes (see the Complete Chemical Inventory below for the full list).
The identified compounds include the following categories:
- Flavonoid: antioxidant compounds that protect cells from oxidative damage