Dioecious valerian
Valeriana dioica · Caprifoliaceae
The gardener's calendar
Ideal time to plant dioecious valerian: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Blooming
- May to July, pink or white flowers
- Adult size
- 20 to 40 cm in height
- Growth
- Moderate
- Hardiness
- Very hardy (down to -15°C)
- Origin
- Europe and temperate Asia
- Soil type
- Moist to fresh, well-drained
Care
Watering
Dioecious valerian appreciates constantly moist soil, especially during the growing season. Water regularly without creating water stagnation. Reduce watering in winter after dormancy.
Light exposure
Place this plant in partial shade or under indirect light. It tolerates less sunny areas and may even prefer a north-facing to semi-shaded exposure in hot regions.
Soil
Prepare a substrate rich in organic matter, fresh and well-drained. Adding peat or leaf mold improves water retention while preventing root suffocation.
Pruning
Light pruning in spring helps maintain a compact shape. Remove faded or damaged stems. Pinch the tips of young shoots to encourage branching.
Fertilizer
A balanced fertilizer application in spring is generally sufficient. Prefer a formulation rich in organic matter or a fertilizer for herbaceous plants in three light applications rather than overfeeding.
Diseases and pests
Regularly check for powdery mildew or rot from stagnant moisture. Good air circulation and moderate watering at soil level reduce risks. Aphids may occasionally appear on young shoots.
Did you know?
Dioecious valerian has been used since ancient times in traditional European medicine, long before its alkaloid-rich rhizomes were scientifically analyzed. The name 'dioecious' means that some plants bear only male flowers and others female flowers, an uncommon botanical adaptation that once made the work of herbalist selection easier.
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
- HoneysuckleLonicera periclymenum
- Small scabiousScabiosa columbaria
- Red valerianCentranthus ruber
- Japanese honeysuckleLonicera japonica
- Himalayan honeysuckleLeycesteria formosa
- Involucred honeysuckleLonicera involucrata
Tips generated and checked by Viridia — adapt them to your local climate.