Milk Thistle
Silybum marianum
herbMilk thistle is a tall, spiky biennial herb native to the Mediterranean, recognizable by its white-veined green leaves and purple-pink thistle flowers. The seeds are traditionally used for liver health and medicinal purposes. This hardy plant thrives in poor soil and is drought-tolerant once established.
Common Problems
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Care Guide
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Light
Full sun (6–8 hours daily)
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Water
Low water needs; water moderately during growth, then allow soil to dry between waterings. Drought-tolerant once established.
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Soil
Well-draining, poor to average soil. Prefers sandy, rocky, or loamy conditions; tolerates poor fertility.
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Fertiliser
Minimal fertilizer needed; a light feeding in spring is sufficient. Avoid high-nitrogen applications.
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Temperature
Cool to warm; prefers 50–75°F (10–24°C)
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Humidity
Low to moderate humidity; drought-tolerant and prefers dry conditions
Toxicity
check_circleSafe for Catscheck_circleSafe for Dogscheck_circleSafe for Children
Generally non-toxic; safe for household members. May cause mild digestive upset if consumed in excess.
Common Diseases
Common Pests
Seasonal Care
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Resume regular watering and feeding as growth picks up.
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Peak growing season. Water and feed regularly.
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Reduce watering as growth slows. Stop heavy feeding.
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Minimal watering and feeding. Protect from frost if needed.