πŸͺΆIndigenous / Native American🏞️Appalachian Folk Medicine

Black-Eyed Susan

Rudbeckia hirta

About Black-Eyed Susan

Black-Eyed Susan (Rudbeckia hirta) is a herb used in the Indigenous / Native American and Appalachian Folk Medicine traditions to help with Immune Support, Common Cold, Wound Healing, and Cold, among 1 other condition it addresses. The aerial parts and leaves are the parts traditionally used, used both internally and topically.

Botanical background

Rudbeckia hirta, commonly called black-eyed Susan, is a North American flowering plant in the sunflower family, native to Eastern and Central North America and naturalized in the Western part of the continent as well as in China. It has now been found in all 10 Canadian Provinces and all 48 of the states in the contiguous United States.

Source: Wikipedia, via iNaturalist

Parts used

Aerial Parts Β· bothLeaves Β· both
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Tea / Infusion

1–3 cups daily
  • Steep 1–2 tsp of dried Black-Eyed Susan in freshly boiled water for 5–10 minutes.
  • Cover while steeping.
  • Strain and drink.
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Tincture

20–40 drops in water, 2–3Γ— daily
  • Pack dried Black-Eyed Susan into a jar and cover with 40–60% alcohol.
  • Seal and steep for 4–6 weeks, shaking daily.
  • Strain and store in a dark dropper bottle.
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Powder / Capsule

500 mg – 1 g, 1–3Γ— daily
  • Grind dried Black-Eyed Susan into a fine powder.
  • Fill size 00 capsules or stir into smoothies or honey.
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Topical / Poultice

1–2Γ— daily as needed
  • Mash fresh Black-Eyed Susan or mix the powder with a little water to form a paste.
  • Apply to the affected area for 20–30 minutes.
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Infused Oil

Massage into affected area 1–2Γ— daily
  • Fill a jar with dried Black-Eyed Susan.
  • Pour over a carrier oil until submerged.
  • Leave for 4–6 weeks, then strain.
  • Use topically or as a salve base.
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Steam Inhalation

1–2Γ— daily during acute symptoms
  • Add 2–3 tbsp of Black-Eyed Susan to a bowl of just-boiled water.
  • Drape a towel over your head and inhale steam for 5–10 minutes.
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Herbal Bath

2–3Γ— per week as needed
  • Brew 4–6 tbsp of Black-Eyed Susan in 1 litre of hot water for 15 minutes, strain, and add to a warm bath.
  • Soak for 20–30 minutes.

Pregnancy, Breastfeeding & Children

No herb-specific pregnancy/child safety research is documented for Black-Eyed Susan in our references β€” the guidance below is based on its general effect category, not research on Black-Eyed Susan itself. Always confirm with a midwife, doctor, or pediatrician.

Pregnancy

Use Caution

This herb has immune-modulating activity. Short-term, food-level use is generally lower risk, but concentrated/long-term use is generally reserved for when needed rather than routine β€” this is a general, mechanism-based caution, not herb-specific research.

Breastfeeding

Likely Safe

Immune-supportive herbs are generally considered lower-risk during breastfeeding at normal amounts; caution is reasonable with autoimmune conditions or immunosuppressant medications.

Children

Use Caution

Short-term, age-appropriate use for colds/immune support is common practice; long-term daily use is generally avoided without pediatric guidance.

Contraindications

  • Autoimmune conditions (lupus, MS, RA) β€” may overstimulate immune response

Warnings

⚠️ Allergic Reactions

Discontinue immediately if you experience rash, itching, swelling, or difficulty breathing.

⚠️ Not Medical Advice

This information is for educational purposes only. Always consult a qualified healthcare provider before using herbal remedies.

Drug & herb interactions

May affect immune activity

Watch for: Immunosuppressants (for transplant or autoimmune conditions)

Immune-stimulating herbs can work against immunosuppressive therapy.

Where to find in nature

Native region

North America

Climate

Varied β€” temperate to subarctic

Habitat

Prairies, woodlands, wetlands, and mountain meadows of North America

🌿 To see Black-Eyed Susan growing, visit botanical gardens, university plant collections, or specialist herb nurseries near you. If foraging in the wild, always work with an expert identifier β€” never consume a plant you are not 100% certain of.

Where to buy

In store

  • Health food stores (Whole Foods, Natural Grocers, Holland & Barrett, GNC)
  • Naturopathic clinics and integrative medicine practices
  • Specialist herbal apothecaries and herbalist practices
  • Farmers markets with herb vendors

Online

iHerb

Wide selection of standardised extracts, capsules, and powders with lab testing

Mountain Rose Herbs

Premium bulk dried herbs β€” certified organic, ethically sourced

Starwest Botanicals

Large selection of certified organic bulk herbs and powders

Herb Pharm

High-quality liquid extracts and tinctures, rigorous quality standards

Amazon

Convenient β€” verify brand certifications and check third-party testing

Etsy

Small-batch artisan herbalists, hand-harvested and wildcrafted herbs

Quality tips

When buying Black-Eyed Susan, look for: certified organic labelling, clearly stated country of origin, third-party lab testing for heavy metals and pesticides, and a batch expiry date. Standardised extracts offer consistent dosing; bulk dried herbs are more economical for regular use. Avoid very cheap, unlabelled products β€” quality varies enormously.