Downy hemp-nettle
Galeopsis pubescens · Lamiaceae
The gardener's calendar
Ideal time to plant downy hemp-nettle: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Blooming
- July to September
- Adult size
- 12 to 24 inches in height
- Growth
- Fast
- Hardiness
- Very hardy (down to 5°F/-15°C)
- Origin
- Central and Western Europe
- Soil type
- Well-drained, tolerates poor soils
Care
Watering
Water regularly during the growing season, but moderately. This plant tolerates drought well once established. Avoid excess moisture, which promotes rot.
Light exposure
Prefer full sun or partial shade. Hairy hemp-nettle adapts well to sunny locations, which intensify flowering and strengthen the plant.
Soil preparation
This hardy plant accepts ordinary soils, even poor or rocky ones. Well-drained soil is preferable to avoid water stagnation. No special soil enrichment is needed at planting time.
Pruning and maintenance
Pinch young plants to encourage branching. Remove spent flowers to extend blooming. In late autumn, cut the plant back to ground level since it's an annual or biennial.
Fertilization
No fertilizer is necessary. A compost application in spring is ample to support growth. Too much nitrogen would produce lush foliage at the expense of flowering.
Diseases and pests
This plant is generally robust and rarely susceptible to disease. Watch for powdery mildew in case of excessive humidity. Aphids may occasionally visit: a water spray or natural treatment is sufficient.
Did you know?
Hairy hemp-nettle is a honey plant highly appreciated by pollinators. Its name 'Galeopsis' comes from the Greek gálea (helmet) and ópsis (appearance), referring to the particular shape of its flowers that resemble a small helmet or mask.
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.
Add this plant to my garden →Plants from the same family
- ThymeThymus vulgaris
- LavenderLavandula angustifolia
- SageSalvia officinalis
- BasilOcimum basilicum
- RosemarySalvia rosmarinus
- BugleAjuga reptans
Tips generated and checked by Viridia — adapt them to your local climate.