Purple Salsify (Tragopogon porrifolius)

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Sunlight Requires at least 6 hours of direct sunlight daily; tolerates light afternoon shade in hot climates

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Watering Water deeply when the top 2–3 cm of soil is dry; avoid overwatering to prevent root rot

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Temperature Thrives in cool to temperate conditions; tolerates light frosts down to 5°C

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Leaf: Long, narrow, grass-like bluish-green leaves clasping the stem at the base
Flower: Purple daisy-like composite blooms with yellow centers, opening only in morning sunlight
Stem: Smooth, hollow, upright stems with minimal branching

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Watering

Water 1–2 times weekly during active growth; ensure soil drains completely

Fertilization

Apply diluted balanced organic fertilizer once monthly. Avoid high-nitrogen fertilizers which can reduce flowering output

Eggshell powder topdress：Crush dried eggshells into fine powder; sprinkle 1–2 tbsp around plant bases and lightly work into topsoil to avoid runoff

Pruning

Deadhead spent blooms to extend the flowering period
Remove yellowing or damaged leaves to improve airflow and reduce pest habitat
Cut back stems to ground level after late summer flowering to support biennial growth cycle

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed non-toxic to cats

Humans: Non-toxic to humans; edible roots and young leaves are safe for consumption

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Culture: N/A

Usage: Edible root with oyster-like flavor; young leaves used in salads; ornamental garden herb