Turnip Weed Plant Care

Turnip Weed (Rapistrum rugosum) belongs to the Brassicaceae family within the Rapistrum genus. Turnip Weed is native to parts of Eurasia and Africa. Turnip Weed is also known as Wild Turnip.

Turnip Weed displays an upright, branching herb growth habit, reaching up to 1.5 ft tall with a spread of approximately 1 ft. Turnip Weed produces small clusters of white or yellow flowers.

Leaf size: approximately 2 inches.

Rapistrum rugosum requires watering every 4–7 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.

Turnip Weed thrives in full sun to partial shade.

Rapistrum rugosum grows best at temperatures of 50–75°F. Turnip Weed prefers humidity levels of 40–60%.

Well-draining loamy soil with added compost for nutrients. Good drainage is essential for Turnip Weed to prevent waterlogging, which leads to root rot and fungal issues.

Feed Turnip Weed 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 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.

Turnip Weed can be propagated through seeds. Similar propagation techniques also apply to wild turnip plant care, which shares the same genus.

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Turnip Weed is susceptible to aphids, cabbage worms, flea beetles. 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.

Turnip Weed grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Turnip Weed is native to parts of Eurasia and Africa. In cooler regions, grow Turnip Weed as a houseplant or bring it indoors before the first frost.