Red hemp-nettle Plant Care
Galeopsis angustifolia Ehrh. ex Hoffm.
Updated · Sources · How we source care data
Galeopsis ladanum var. angustifolia, the red hemp-nettle, is a European annual plant growing to 30 cm tall.
Full sun to partial shade
At a glance
How do you care for Red hemp-nettle?
Red hemp-nettle grows best in full sun to partial shade.
What Is the Red hemp-nettle?
Red hemp-nettle (Galeopsis angustifolia) belongs to the Lamiaceae family within the Galeopsis genus. Red hemp-nettle is also known as Narrow-leaved hemp-nettle.
Red hemp-nettle displays a spreading herbaceous perennial growth habit, reaching up to tall with a spread of approximately . Red hemp-nettle produces small, tubular purple flowers in dense spikes.
What Light Does the Red hemp-nettle Need?
Red hemp-nettle thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Soil Mix Works Best for a Red hemp-nettle?
Well-draining loamy soil with added compost for nutrients. Good drainage is essential for Red hemp-nettle to prevent waterlogging, which leads to root rot and fungal issues.
How Do You Repot a Red hemp-nettle?
Divide and 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.
How Do You Propagate a Red hemp-nettle?
Red hemp-nettle can be propagated through seeds, division of clumps. Similar propagation techniques also apply to large-flowered hemp-nettle plant care, which shares the same genus.
Is the Red hemp-nettle Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Red hemp-nettle, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Red hemp-nettle?
Red hemp-nettle is susceptible to aphids, spider mites, whiteflies. 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.
Keep exploring plants
Red hemp-nettle is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Galeopsis genus — compare its care with other Galeopsis species on PlantoScan.
Galeopsis is part of the Lamiaceae plant family — browse all Lamiaceae genera and species.
Red hemp-nettle thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Galeopsis angustifolia Ehrh. ex Hoffm., family Lamiaceae (first published in Deutschl. Fl. Bot. Taschenb. 4: 8 (1804)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Red hemp-nettle, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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