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Pellitory-of-the-Wall (Parietaria officinalis syn. Parietaria diffusa)

Botanical Information

  • Family: Urticaceae
  • Common Names: Pellitory-of-the-Wall, Spreading Pellitory, Lichwort
  • Parts Used: Aerial parts (leaves, stems, flowers)

Description

Parietaria officinalis, commonly known as Pellitory-of-the-Wall, is a perennial herbaceous plant that thrives in cracks of walls and rocky terrains. Traditionally valued for its diuretic, anti-inflammatory, and expectorant properties, it has been widely used in European herbal medicine for kidney and respiratory health.

Historical and Traditional Uses

  • Used in medieval European herbal medicine for kidney and urinary tract support.
  • Employed as an expectorant to aid in clearing mucus from the lungs.
  • Traditionally used to reduce inflammation and promote wound healing.
  • Applied as a poultice for skin irritations and minor wounds.

Constituents

  • Flavonoids
  • Tannins
  • Mucilage
  • Minerals (potassium, silica)
  • Essential oils

Actions

  • Diuretic
  • Anti-inflammatory
  • Expectorant
  • Soothing demulcent
  • Vulnerary (wound-healing)

Medicinal Uses

1. Kidney and Urinary Tract Health:
Pellitory-of-the-Wall is widely used as a diuretic to support kidney function, promote urine flow, and alleviate mild urinary infections.

2. Respiratory Support:
Traditionally used as an expectorant to clear mucus and soothe irritated airways.

3. Inflammatory and Joint Relief:
Helps reduce inflammation in cases of rheumatism, arthritis, and gout.

4. Skin and Wound Healing:
Applied topically for minor burns, wounds, and eczema.

5. Digestive Aid:
Used as a mild digestive tonic to calm irritation in the gastrointestinal tract.

Preparation and Dosage

Infusion (Tea):

  • 1-2 tsp of dried herb per cup of hot water. Steep for 10 minutes. Drink up to twice daily.

Tincture:

  • 2-5 ml taken up to 3 times daily.

Poultice (Topical Use):

  • Fresh or dried herb made into a poultice and applied to inflamed or irritated skin.

Precautions and Contraindications

  • Pregnancy and Lactation: Use with caution; consult a healthcare provider.
  • Allergic Reactions: Some individuals may experience skin irritation or allergies.
  • Kidney Conditions: Due to its diuretic effects, use cautiously in those with kidney disease.

Energetics (Traditional Medicine Perspectives)

  • Traditional Western Herbalism: Cooling and moistening; supports kidney, lung, and skin health.
  • Ayurveda: Primarily balances Pitta and Kapha, but excessive use may aggravate Vata.
  • Traditional Chinese Medicine (TCM): Used to clear damp-heat and support fluid balance.

Combinations

  • For Kidney and Urinary Health: Combine with nettle and dandelion leaf.
  • For Respiratory Support: Combine with mullein and thyme.
  • For Joint Inflammation: Combine with turmeric and willow bark.

Harvesting and Storage

  • Harvesting: Aerial parts are collected during the flowering season.
  • Drying: Air dry in a well-ventilated, shaded area.
  • Storage: Store dried plant material in airtight containers away from moisture and light.

Modern Research

Studies confirm Parietaria officinalis’s diuretic, anti-inflammatory, and expectorant properties, reinforcing its traditional applications.

Pellitory-of-the-Wall remains a valuable herb in both traditional and modern herbal medicine, particularly for kidney health, respiratory support, and inflammatory relief.