Galeopsis ladanum
Galeopsis ladanum · Lamiaceae
The gardener's calendar
Ideal time to plant galeopsis ladanum: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Family
- Lamiaceae
- Type
- Annual or biennial herb
- Foliage
- Deciduous, medium green, slightly pubescent
- Flowering
- June to September, pink or purple flowers
- Mature size
- 30 to 60 cm in height
- Hardiness
- Tender, grown as an annual in temperate climates
- Origin
- Central and Mediterranean Europe
- Growth
- Fast
Care
Light
Choose a sunny or semi-shaded location to encourage generous flowering. Galeopsis tolerates light shade but prefers direct sunlight. Avoid areas that are too shaded, as they slow growth.
Soil
This plant adapts to most soils, even poor or chalky ones. Well-drained soil is preferable to prevent root rot. No special preparation is needed; it grows even in ruderal terrain.
Watering
Water moderately, letting the soil dry slightly between waterings. Once established, galeopsis tolerates drought well. During hot spells, increase watering frequency to maintain regular flowering.
Fertilizer
No fertilizer is essential; galeopsis thrives in poor soils. A light application of compost in spring is enough to support growth and flowering without excess.
Pruning and pinching
Pinch young plants at the 4-6 leaf stage to encourage bushier branching. Remove faded flowers regularly to extend the flowering period. Light pruning in late summer can rejuvenate the plant.
Pests and diseases
Generally resistant, it can be prone to aphids or powdery mildew in humid conditions. Ensure good air circulation and avoid excessive watering of the foliage. Little treatment is needed in natural cultivation.
Did you know?
Galeopsis ladanum, also called 'Ladanum galeopsis' or 'Hemp-nettle', is a pioneer plant that naturally colonizes wastelands and disturbed areas. It was long used in traditional medicine in Mediterranean regions, notably for preparing tonic infusions. Its scientific name 'ladanum' comes from ancient Greek and evokes dense, sticky plants.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
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Tips generated and checked by Viridia — adapt them to your local climate.