Lavender
Lavandula Angustifolia
Lavandula angustifolia, commonly known as English Lavender, is cherished for its fragrant flowers and aromatic foliage. Native to the Mediterranean, it is a hardy perennial that thrives in sunny locations and well-drained soil, making it a favorite among gardeners for its beauty and versatility.
Everything it needs
9 essentials at a glance
Watering
Lavandula angustifolia prefers well-drained soil and should be watered deeply but infrequently.
Water every 2-3 weeks during the growing season, allowing the soil to dry out between waterings. In winter, reduce watering to once a month. Signs of over-watering include yellowing leaves and root rot, while under-watering may cause wilting and browning of leaf tips.
Light
Lavender thrives in full sun, requiring at least 6-8 hours of direct sunlight daily.
Ideal placement includes south-facing gardens or patios. While it can tolerate partial shade, too little light may result in leggy growth and reduced flowering.
Soil
The ideal soil for Lavandula angustifolia is sandy or loamy with excellent drainage, with a pH range of 6.0 to 8.0.
A recommended potting mix includes a blend of potting soil, sand, and perlite to enhance drainage.
Humidity
Lavender prefers low to moderate humidity levels, ideally between 30-50%.
To increase humidity, mist the plant lightly or place a humidity tray nearby. Signs of humidity stress include browning leaf tips and wilting.
Temperature
Lavender thrives in temperatures between 60-75°F (15-24°C) and is hardy in zones 5-9.
It can tolerate heat but may suffer in extreme cold, so protect it from frost during winter months.
Fertilizing
Use a balanced fertilizer with an NPK ratio of 5-10-10, applying it every 4-6 weeks during the growing season.
Reduce or eliminate fertilization in the fall and winter. Signs of nutrient deficiency include stunted growth and pale leaves.
Pruning
Prune lavender in early spring before new growth begins, removing about one-third of the plant.
Use sharp, clean shears to shape the plant and promote bushier growth. Deadheading spent flowers throughout the blooming season encourages more blooms.
Repotting
Repot lavender every 2-3 years or when it becomes root-bound.
Choose a pot that is 1-2 inches larger in diameter. Signs it needs repotting include roots growing out of the drainage holes and stunted growth. When repotting, gently loosen the roots and place the plant in fresh potting mix.
Propagation
Lavender can be propagated through stem cuttings or seeds.
For cuttings, take 4-6 inch sections from healthy stems in late spring, remove lower leaves, and place them in a well-draining mix. Keep the cuttings moist and in bright light until roots develop. For seeds, sow them in spring after stratification for best results.
When it's unhappy
Yellow leaves
Why it happens
Over-watering or poor drainage.
How to fix it
Ensure the pot has drainage holes and allow the soil to dry out completely between waterings.
Root rot
Why it happens
Excess moisture and poorly draining soil.
How to fix it
Repot the plant in fresh, well-draining soil and reduce watering frequency.
Leggy growth
Why it happens
Insufficient sunlight.
How to fix it
Move the plant to a sunnier location to ensure it receives at least 6-8 hours of direct sunlight.
Browning leaf tips
Why it happens
Low humidity or under-watering.
How to fix it
Increase humidity around the plant and ensure consistent watering without over-saturating the soil.
Pest infestations (e.g., aphids)
Why it happens
Weak plants can attract pests.
How to fix it
Regularly inspect the plant and treat infestations with insecticidal soap or neem oil.
Care through the year
Spring
In spring, prune back any dead or damaged growth and fertilize with a balanced fertilizer to encourage new growth.
Summer
During summer, ensure consistent watering every 2-3 weeks and deadhead spent flowers to promote further blooming.
Fall
In fall, reduce watering as the plant enters dormancy and prepare it for winter by mulching around the base to protect roots.
Winter
In winter, limit watering to once a month and protect the plant from frost by covering it or moving it indoors if necessary.
Toxicity & Safety
Lavandula angustifolia is generally non-toxic to pets and children. However, ingestion of large quantities may cause gastrointestinal upset. The essential oil can be irritating to the skin in some individuals.
Good to know
How often should I water my lavender?
Water lavender every 2-3 weeks during the growing season, allowing the soil to dry out completely between waterings.
Why are my lavender leaves turning yellow?
Yellow leaves are often a sign of over-watering or poor drainage. Ensure the pot has drainage holes and allow the soil to dry out between waterings.
What type of soil is best for lavender?
Lavender prefers sandy or loamy soil with excellent drainage and a pH range of 6.0 to 8.0. A mix of potting soil, sand, and perlite is ideal.
Can lavender survive winter outdoors?
Yes, lavender is hardy in zones 5-9. However, it should be protected from extreme cold and frost during winter months.
How do I propagate lavender?
Lavender can be propagated through stem cuttings taken in late spring or by sowing seeds after stratification. Both methods require well-draining soil.
When should I prune my lavender?
Prune lavender in early spring before new growth begins, removing about one-third of the plant to promote bushier growth.
What pests affect lavender plants?
Common pests include aphids and spider mites. Regular inspection and treatment with insecticidal soap can help manage infestations.
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