Ruthenian catchfly Plant Care

Ruthenian catchfly (Silene ruthenica) belongs to the Caryophyllaceae family within the Silene genus. Ruthenian catchfly is native to north-central Europe and western Asia, from Germany and Norway eastwards to western Siberia and Kazakhstan. Ruthenian catchfly is also known as Silene ruthenica var. ruthenica.

Ruthenian catchfly displays a low rosette, spreading growth habit, reaching up to 1 ft tall with a spread of approximately 1 ft. Ruthenian catchfly produces small, star-shaped flowers in various colors.

Leaf size: approximately 2 inches.

Silene ruthenica requires watering every 3–7 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.

Ruthenian catchfly thrives in full sun to partial shade.

Silene ruthenica grows best at temperatures of 50–75°F. Ruthenian catchfly prefers humidity levels of 40–60%.

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

Feed Ruthenian catchfly every 3 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 1-2 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.

Ruthenian catchfly can be propagated through seeds, division. Similar propagation techniques also apply to alpine catchfly plant care, which shares the same genus.

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Ruthenian catchfly is susceptible to aphids, spider mites, leaf miners. 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.

Ruthenian catchfly grows outdoors in USDA Zone 4a – 8b. It survives winters down to planting zone 4a. Ruthenian catchfly is native to north-central Europe and western Asia, from Germany and Norway eastwards to western Siberia and Kazakhstan.