Persian Shield (Strobilanthes auriculata var. dyeriana)

Persian Shield

Strobilanthes auriculata var. dyeriana

Iridescent purple foliage shimmers like stained glass. Evergreen ornamental shrub; common name: royal purple plant.

Partial sun
1–2/week
Beginner
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Plant Needs

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Sunlight Bright indirect light; avoid direct midday sun to prevent leaf scorch and preserve iridescence
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Watering Water when the top 2 cm of soil feels dry; avoid overwatering to prevent root rot
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Temperature Thrives in warm, humid conditions; protect from temperatures below 12°C to avoid leaf drop
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Characteristics

  • Leaf: Oblong-lanceolate leaves with iridescent purple undersides and green tops, serrated margins
  • Stem: Erect, branching stems with reddish tint
  • Flower: Tubular pale blue or white flowers in terminal spikes (rare indoors)
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Care Guide

Watering

Keep soil evenly moist but not waterlogged

Fertilization

Diluted balanced liquid feed every 2 weeks. Avoid over-fertilizing to prevent leaf burn; stop feeding in autumn and winter

Banana peel tea:Soak 1 peeled banana in 1 liter of water for 24 hours; dilute the mixture 1:10 with water before applying as a root drench to avoid nutrient buildup
Pruning
  • Pinch new growth tips in spring to encourage bushier, compact growth
  • Remove leggy stems and yellowing leaves to maintain plant shape and improve airflow
  • Trim faded flower spikes (if present) to redirect energy to foliage production
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats

Humans: No known toxic effects for humans

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Garden Uses & Culture

Culture: Symbolizes creativity and vibrancy due to its striking, iridescent foliage

Usage: Ornamental indoor foliage plant; outdoor border or container plant in warm, humid climates