How to Grow French Lavender
Lavandula dentata
French Lavender offers fragrant, serrated foliage that thrives in sunny spots across warm regions. Gardeners prize this perennial herb for its drought tolerance and ability to add texture to borders or containers without demanding excessive care.
📷 Wikimedia CommonsStarting French Lavender: indoors or direct sow?
🌾 Sow directly in the garden — French Lavender is not usually started indoors.
Start seeds indoors 8 to 10 weeks before the last frost, then transplant seedlings outdoors only after all danger of frost has passed and soil temperatures have warmed sufficiently.
Soil, care & harvest
Prepare well-drained soil with a pH between 6.5 and 7.5 to suit these Mediterranean natives. Because French Lavender is a perennial best established before winter, start seeds indoors 8 to 10 weeks before your last frost date. Press seeds gently into the surface; they do not require deep burial. Expect germination in 14 to 21 days once warmth and moisture are consistent.
Space plants 24 to 30 inches apart to ensure good air circulation, which prevents fungal issues. This herb requires no support or trellising as it grows freely. Water moderately only when the soil feels dry; established roots handle drought well. Apply a light mulch to retain moisture but keep it away from stems to avoid rot.
Watch for aphids, spittlebugs, and whiteflies by inspecting leaves regularly; a strong water spray often suffices to deter them. Prevent root rot by ensuring excellent drainage and avoiding wet conditions where fungal diseases thrive. Harvest sprigs of foliage after about 90 to 120 days when growth is lush and aromatic for culinary or decorative use.
When to Plant French Lavender
Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.
Companion Plants for French Lavender
✓ Good companions
Natural pest deterrent that repels aphids, spider mites, and cabbage worms
Lavender deters cabbage moths, flea beetles, and other brassica pests
Repel nematodes and aphids while attracting beneficial insects to the garden
Shares drought tolerance and well-draining soil needs, repels harmful insects
Similar water and soil requirements, both repel pests like moths and beetles
Lavender repels aphids and ants that commonly attack roses
Both prefer alkaline soil and full sun, sage deters cabbage moths and carrot flies
Compatible Mediterranean herb with similar growing conditions, attracts beneficial pollinators
✗ Keep away from
Acid-loving plants that prefer moist, rich soil opposite to lavender's alkaline, dry conditions
Requires frequent watering and rich, moist soil that lavender cannot tolerate
Aggressive spreader that competes for space and has different water requirements
Nutrition Facts
Per 100g serving (USDA FoodData Central)
