Strobilanthes dyerianus

Persian Shield

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Taxonomy

Common Names

Persian Shield

Context

nativeRegion

Myanmar (Burma), Southeast Asia

usdaZones

9-11 (commonly grown as an annual or houseplant in colder zones)

companionPlants

Coleus, Calathea, Begonia, Ferns

culturalUses

Primarily cultivated for its ornamental foliage; used in tropical gardens and as a striking houseplant.

Care

LightBright, indirect light; tolerates some direct sun but leaves may scorch.

WateringKeep soil consistently moist but not soggy; allow top inch to dry between waterings.

SoilPrefers well-draining, fertile soil rich in organic matter; pH 6.0-7.5.

FertilizerFeed monthly in spring and summer with balanced, water-soluble fertilizer.

HumidityHigh humidity preferred (over 50%) to maintain leaf vibrancy.

TemperatureThrives in 16-29°C (60-85°F); avoid cold drafts and temperatures below 13°C (55°F).

HabitEvergreen, bushy shrub with vibrant, metallic-purple foliage.

Mature Size60-90 cm tall and wide (24-36 inches).

Growth RateModerate to fast-growing under optimal conditions.

BloomingProduces funnel-shaped, pale violet-blue flowers in late autumn to winter (rarely indoors).

DormancyNo true dormancy, but growth slows in cool or low-light conditions.

MethodsStem cuttings, Division

DifficultyEasy

Best SeasonSpring or early summer

PruningPinch stems to promote bushier growth and remove faded leaves or flowers.

RepottingRepot annually or when root-bound, preferably in spring.

Pests & DiseasesWatch for spider mites, aphids, and mealybugs; may suffer from root rot if overwatered.

ToxicityNot widely documented as toxic, but keep out of reach of pets and children.

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