Rough Poppy (Papaver setigerum)

Rough Poppy

Papaver setigerum

Its crinkled petals hold soft, fleeting color against sharp sepals. Annual flowering poppy; common names: Rough Poppy, Long-headed Poppy.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Requires full sun for optimal flowering; can tolerate partial shade in hot, arid regions to prevent foliage scorch
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Watering Water deeply when the top 2 cm of soil feels dry; avoid overwatering to prevent root rot and fungal growth
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Temperature Thrives in cool temperate conditions; avoid prolonged exposure to temperatures above 28°C, which can halt flowering
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Characteristics

  • Leaf: Pinnately lobed, hairy, gray-green foliage with a rough, sandpapery texture
  • Flower: Crinkled pale pink to deep red petals; topped with long, bristly, pointed sepals
  • Stem: Slender, hairy stems with sparse, upright branching
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Care Guide

Watering

Keep soil evenly moist during active growth; avoid waterlogging the root zone

Fertilization

Apply diluted balanced liquid fertilizer once every 2 weeks. Avoid over-fertilizing, as this can reduce flower production

Banana peel compost tea:Use fully composted banana peels steeped in water for 24 hours; dilute the tea 1:20 before applying to the root zone to avoid nutrient burn
Pruning
  • Deadhead spent flower heads regularly to encourage extended blooming throughout the spring
  • Remove yellowing or damaged foliage to improve airflow and reduce fungal disease risk
  • Cut back entire stems to ground level after flowering to collect seeds or clear garden beds for next season
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion may cause vomiting, diarrhea, lethargy, tremors, and respiratory distress

Humans: Contains alkaloids; ingestion may cause nausea, dizziness, and drowsiness; severe cases can lead to respiratory depression

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Garden Uses & Culture

Culture: Symbolizes fleeting beauty and remembrance in traditional European folklore

Usage: Ornamental garden plant; seeds have lower alkaloid content than Papaver somniferum and are not commonly used for medicinal or culinary purposes