Stiff Hare's-ear (Bupleurum rigidum)

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Sunlight Full sun to partial shade; thrives in hot, dry conditions and tolerates intense summer sunlight

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Watering Water deeply but infrequently; drought-tolerant once established, avoid overwatering to prevent root rot

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Temperature Hardy to -10°C; tolerates high summer heat up to 35°C in Mediterranean climates

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Leaf: Linear, silvery-blue, stiff, arranged in basal rosettes and alternate on upright stems
Flower: Tiny yellow umbellate clusters at stem tips, with subtle bracts
Stem: Erect, branched, glabrous, with a waxy, pale coating

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Watering

Water occasionally during prolonged dry spells to support growth

Fertilization

Rare feeding needed; use diluted organic feed only if soil is severely nutrient-poor. Over-fertilization can reduce foliage silvery coloration

Banana peel compost tea：Use fully composted banana peels, dilute 1:20 with water for root drench; avoid applying to foliage

Pruning

Remove spent flower stems after blooming to maintain tidy clumps
Trim back dead foliage in late winter to promote fresh spring growth
Thin overcrowded clumps every 2–3 years to improve airflow and reduce disease risk

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Warning: this plant may be toxic.

Pets & Humans

Pets: Not listed as toxic to cats by ASPCA; no documented adverse effects

Humans: No known toxic effects to humans; some varieties are used in traditional herbal medicine

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Culture: N/A

Usage: Ornamental rock garden plant; limited traditional herbal use in some Mediterranean regions