Homers Herbs

What can we help you with?
< All Topics
Print

Tropaeolum majus (Tropaeolaceae)

Botanical Information

Family: Tropaeolaceae
Common Names: Nasturtium, Indian Cress, Monk’s Cress
Parts Used: Leaves, Flowers, Seeds

Description

Tropaeolum majus, commonly known as Nasturtium, is a fast-growing, trailing or climbing annual native to South America. It is widely cultivated for its vibrant, edible flowers and peppery-tasting leaves. Beyond its culinary appeal, Nasturtium has a long history in herbal medicine, valued for its antimicrobial, expectorant, and diuretic properties. Traditionally, it has been used for respiratory health, urinary tract infections, and as a natural antibiotic alternative.

Historical and Traditional Uses

  • Used in South American folk medicine as a natural antibiotic for respiratory and urinary tract infections.
  • Traditionally employed for wound healing, due to its antiseptic and antimicrobial properties.
  • Historically used as an expectorant to relieve chest congestion and coughs.
  • Applied topically to promote hair growth and scalp health.
  • Utilized as a general immune booster, often consumed in salads or teas.

Constituents

  • Glucosinolates (converted into antimicrobial isothiocyanates)
  • Flavonoids
  • Vitamin C
  • Carotenoids
  • Volatile oils
  • Minerals (especially sulfur, iodine, and potassium)

Actions

  • Antimicrobial
  • Expectorant
  • Diuretic
  • Antiseptic
  • Circulatory stimulant
  • Anti-inflammatory

Medicinal Uses

  1. Respiratory Health
    • Acts as a natural expectorant to clear mucus and soothe bronchitis, colds, and sinus infections.
  2. Natural Antibiotic
    • Contains isothiocyanates, which have been shown to fight bacteria, fungi, and viruses, making it useful for infections.
  3. Urinary Tract Infections (UTIs)
    • Used as a diuretic and antimicrobial, supporting bladder and kidney health.
  4. Immune Support
    • High in Vitamin C, it helps boost the immune system and prevent infections.
  5. Wound Healing & Skin Health
    • Crushed leaves and flowers can be applied externally to treat cuts, wounds, and skin infections.
  6. Circulatory Stimulation
    • Improves blood flow and may aid in reducing cold extremities and sluggish circulation.
  7. Hair & Scalp Health
    • Infusions or tinctures are applied to the scalp to stimulate hair growth and reduce dandruff.

Preparation and Dosage

Infusion (Tea from Fresh or Dried Leaves & Flowers):

  • 1 tbsp of fresh leaves or flowers (or 1 tsp dried) per cup of hot water.
  • Steep for 10-15 minutes, up to 2-3 times daily.

Tincture:

  • 2-5 ml taken up to twice daily.

Poultice (Topical Use):

  • Freshly crushed leaves applied directly to wounds, cuts, or skin irritations.

Salad or Culinary Use:

  • Leaves, flowers, and seeds can be eaten fresh in salads for antimicrobial and immune-boosting benefits.

Precautions and Contraindications

  • Pregnancy & Breastfeeding: Should be used cautiously as it may stimulate circulation and have a mild irritant effect.
  • Gastrointestinal Sensitivity: May cause mild stomach irritation in high doses due to its pungency.
  • Kidney Issues: Should not be used long-term by those with kidney disease, as it can be stimulating to the kidneys.

Energetics (Traditional Medicine Perspectives)

Traditional Western Herbalism: Warming and pungent; stimulates circulation, digestion, and immune function.
South American Herbal Medicine: Used for respiratory health, infections, and wound healing.
European Folk Medicine: Applied for urinary tract infections, colds, and scalp health.

Combinations

  • For Respiratory Infections: Combine with thyme and elecampane.
  • For UTIs & Bladder Health: Blend with uva-ursi and goldenrod.
  • For Wound Healing: Use with calendula and yarrow in a poultice.
  • For Circulatory Support: Combine with cayenne and ginger.

Harvesting and Storage

  • Harvesting: Leaves and flowers can be picked fresh throughout the growing season.
  • Drying: Air dry leaves and flowers in a shaded, ventilated space.
  • Storage: Store dried plant material in airtight containers away from moisture and direct light.

Modern Research

  • Studies confirm Tropaeolum majus has antimicrobial, expectorant, and diuretic effects, supporting its traditional uses.
  • Research suggests its isothiocyanates exhibit broad-spectrum antibacterial activity, making it a potential natural antibiotic alternative.

Tropaeolum majus remains a versatile and effective herb in modern herbalism, valued for respiratory health, immune support, and wound healing. Its edible nature makes it a unique addition to both medicinal and culinary practices.