Gray Leaved French Lavender (Lavandula dentata var. candicans), is a bushy, evergreen shrub known for its soft, silvery-gray, serrated leaves and fragrant, pale lavender-blue flowers that bloom throughout the summer. It grows to about 75 cm tall and 60 cm wide, requires full sun and well-drained soil, and is suitable for low hedges, borders, and mass plantings. This half-hardy plant is often called Gray French Lavender due to its appearance, and its flowers are good for cutting and drying.
French Lavender Medicinal Benefits
- Respiratory Support: Vapor from boiling leaves and flowers is used to treat colds, coughs, bronchitis, and asthma.
- Pain Relief: Used for rheumatism, muscle aches, headaches, and migraines.
- Digestive Health: Acts as a stomachic and aids in treating digestive problems, including colic, flatulence, and diarrhea.
- Dermatological/External: Used for skin ailments, wounds, burns, psoriasis, scabies, and eczema.
- Other: Used for insomnia, nervous exhaustion, and reducing fever.
- Antimicrobial: Studies indicate antimicrobial, antifungal, and anti-inflammatory properties.
Plant Part Usage:
- Flowers/Flower Tops: Used for infusions (tea) and infusions to aid sleep and calm the nervous system.
- Leaves/Leafy Stems: Used in decoctions for urinary system ailments, diabetes, and as a hair rinse for lice.
- Essential Oil: Used in aromatherapy to reduce stress and anxiety, and in creams for skin healing.
Other Uses:
- Repellent: Known to repel mosquitoes, flies, and moths.
- Culinary: Unlike English lavender, it is not typically used for cooking, but it can be used to add a slightly camphor-like flavor to savory dishes.
Growing Gray Leaved French Lavender
Indoor Sowing: Cold Stratification and then sow in Late Winter.
Direct Sowing: Late Autumn.
- It can take one to three months for lavender seeds to germinate, so start early and be patient.
- For indoor sowing, first cold stratify the seeds for 30 days and then sow seeds in Late Winter.
- For direct sowing, sow the seeds in Late Autumn and germination will start taking place the following Spring.
- Use shallow seed trays and just barely cover the seeds with soil.
- Use a light soil or a vermiculite blend.
- Keep the seeds moist but not overly wet.
- A sunny spot is a great location to keep the soil from getting too wet and to add warmth.
- Your lavender seedlings will be ready to transplant once they have several leaves per plant.
- Your first year of growth will not be impressive, but by year two, expect to have large, blooming lavender.
- Prune lightly after flowering to maintain a compact shape.
- Plant 30cm apart for a hedge or border.











