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Black-eyed Susan (Rudbeckia hirta)

black-eyed Susan


immunostimulating, antifungal, antibacterial

Areas of application:

Colds, flu, infections, swelling, irritated skin, ulcers, cuts, scrapes, snake bites, worms, earaches, strengthens the immune system

Plant parts used:

leaves, roots

Collection time:

Late summer to early fall

To find:

On grassy roadsides, banks and wastelands.


Flavonoids such as eupalin and eupatolin, dithiapolyins (thiarubrins), thiophenes, polyacetylenes, lipids and lipoids


The black-eyed Susan grows up to 90 cm high and up to 50 cm wide. It is an annual and sometimes perennial plant. The leaves are alternate, 10 to 20 cm long and covered with coarse hairs. The branched stems grow from a single taproot. The flowers are approximately 10 cm in diameter with a brownish-black dome in the center surrounded by yellow petals.

🛑 The plant is poisonous to cats. The seeds are poisonous! Caution may cause contact dermatitis.

The black-eyed Susan is the state flower of Maryland.

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