Flora Londinensis Plant Care

Flora Londinensis (Carduus tenuiflorus) belongs to the Asteraceae family within the Carduus genus. Flora Londinensis is native to western Europe and Northwest Africa.

Flora Londinensis displays an upright, branching perennial growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Flora Londinensis produces purple, pink, or white thistle-like flowers in dense clusters.

Leaf size: approximately 8 inches.

Carduus tenuiflorus requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.

Flora Londinensis thrives in full sun.

Carduus tenuiflorus grows best at temperatures of 60–80°F. Flora Londinensis prefers humidity levels of 40–70%.

Well-draining sandy loam with added organic matter. Good drainage is essential for Flora Londinensis to prevent waterlogging, which leads to root rot and fungal issues.

Feed Flora Londinensis every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.

Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.

The PlantoScan app can remind you when to water and when to fertilize each plant.

Repot every 2-3 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.

Flora Londinensis can be propagated through seeds. Similar propagation techniques also apply to thistle plant care, which shares the same genus.

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Flora Londinensis is susceptible to aphids, thrips, spider mites. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.

Flora Londinensis grows outdoors in USDA Zone 8a – 10b. It survives winters down to planting zone 8a. Flora Londinensis is native to western Europe and Northwest Africa.