Roman Ironwort (Sideritis romana)

Roman Ironwort

Sideritis romana

Its fuzzy silver foliage holds herbal warmth and subtle yellow blooms. Perennial herbaceous plant; common name: Roman ironwort.

Full sun
1–2/week
Beginner
🌱

Plant Needs

☀️
Sunlight Full sun to partial shade; tolerates hot, dry Mediterranean growing conditions
💧
Watering Allow soil to dry completely between waterings; highly drought-tolerant
🌡️
Temperature Hardy to mild frosts; thrives in warm, arid to semi-arid climates
🔍

Characteristics

  • Leaf: Silvery-gray, woolly, oblong to lanceolate leaves arranged in opposite pairs
  • Flower: Dense terminal spikes of small, tubular yellow flowers
  • Stem: Erect, hairy stems with branching near the top
🛠️

Care Guide

Watering

Water deeply once weekly during prolonged dry spells; avoid waterlogging

Fertilization

Light top-dressing with compost in early spring. No regular fertilization required for healthy growth

Composted eggshell powder:Sprinkle a thin layer around the base in early spring; avoid direct contact with foliage to prevent burning
Pruning
  • Deadhead spent flower spikes to encourage prolonged blooming and tidy growth
  • Trim back leggy stems in early spring to promote compact, bushy foliage
  • Remove damaged or yellowing leaves to improve airflow and reduce pest risk
⚠️

Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: No listed toxicity to cats

Humans: No known toxic effects for humans; often used in herbal teas

📖

Garden Uses & Culture

Culture: Used in traditional Mediterranean folk medicine for mild calming and digestive support

Usage: Herbal tea production, ornamental ground cover for low-water gardens