lavender
(lavandula angustifolia)
History
Cultivated since ancient times, lavender has long been prized by Mediterranean and Roman civilizations for its aromatic and medicinal properties. Today, Lavandula angustifolia is a symbol of ornamental and aromatic gardens, especially in the south of France and England, where it has been featured for several centuries in the art of decorative and therapeutic planting.
Origins
Native to the Mediterranean and western Asian regions, this species has naturalized in various temperate climates. Over time, varieties selected for their essential oil yield and robustness have developed, making lavender a flagship product of ornamental and aromatic agriculture in Europe.
Installation and planting
To grow lavender successfully, it is essential to choose a site with full sun with well-drained, nutrient-poor soil. Lavender adapts perfectly to sandy or gravelly soils and requires a spacing of about 30-50cm between plants to ensure good air circulation and limit humidity, a key factor in preventing fungal diseases.
Physiology
Lavandula angustifolia is a perennial shrub, usually compact, reaching 30 to 60 cm in height. Its narrow, grey–green leaves and purple or blue–purple flower spikes, rich in essential oil, characterise its appearance. The plant is very resistant to drought, which is due to its superficial and extensive root system, adapted to hot and dry climates.
Plant management
Minimal maintenance is required:
• Pruning: After flowering, light pruning removes the lignified parts and stimulates new, denser and aromatic growth.
• Maintenance: Weeding and light mulching (with gravel or sand) help limit competition and maintain dry soil, ideal conditions for lavender.
• Irrigation: Watering should be moderate, especially in periods of high heat, to avoid excess humidity which would promote the development of diseases.
• Pruning: After flowering, light pruning removes the lignified parts and stimulates new, denser and aromatic growth.
• Maintenance: Weeding and light mulching (with gravel or sand) help limit competition and maintain dry soil, ideal conditions for lavender.
• Irrigation: Watering should be moderate, especially in periods of high heat, to avoid excess humidity which would promote the development of diseases.
Product Quality
The quality of Lavandula angustifolia is measured by the richness of its essential oil and the beauty of its flowers. The high–quality flowers are characterized by an intense color and a powerful fragrance, which is highly appreciated in aromatherapy, perfumery and cooking. The concentration of aromatic compounds (linalool, linalyl acetate) determines the commercial value and therapeutic efficacy of the plant.
Plant Protection
Lavender is naturally resistant, but certain precautions are necessary:
• Prevention: Good drainage and maximum exposure to the sun limit the appearance of fungal diseases such as mildew or powdery mildew.
• Monitoring: Check regularly for pests such as aphids.
• Treatments: In case of a problem, choose organic solutions (insecticidal soap, nettle manure) to protect the plant without altering the quality of the essential oil.
• Prevention: Good drainage and maximum exposure to the sun limit the appearance of fungal diseases such as mildew or powdery mildew.
• Monitoring: Check regularly for pests such as aphids.
• Treatments: In case of a problem, choose organic solutions (insecticidal soap, nettle manure) to protect the plant without altering the quality of the essential oil.
Harvest
Lavender is harvested at the end of summer, usually when the flowers are fully blooming but before they begin to dry out:
• Method: Manual picking preserves the quality of the flowers, which are essential for oil extraction.
• Drying: After harvest, the flowers are quickly dried in a shady and well–ventilated area to preserve their aromas and color, essential for their applications in aromatherapy and perfumery.
• Method: Manual picking preserves the quality of the flowers, which are essential for oil extraction.
• Drying: After harvest, the flowers are quickly dried in a shady and well–ventilated area to preserve their aromas and color, essential for their applications in aromatherapy and perfumery.
