Lavender Seeds: How to Sow, Grow, and Care for Lavender from Seed
Growing lavender from seed is a rewarding and cost-effective way to produce healthy plants for borders, pots, and pollinator-friendly gardens. While lavender seeds take a little patience compared with buying young plants, they allow you to grow strong, well-adapted plants from the very beginning and experiment with different varieties.
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This guide explains everything you need to know about lavender seeds, including when to sow them, how to germinate them successfully, and how to care for seedlings as they grow.
Are Lavender Seeds Easy to Grow?
Lavender seeds are not difficult, but they are slow to germinate compared with many garden plants. Success depends on:
- Warmth
- Light
- Free-draining compost
- Patience
Once germinated, lavender seedlings are hardy and long-lived when grown correctly.
When to Sow Lavender Seeds
The best time to sow lavender seeds is:
- Late winter to early spring (February to April)
This gives plants plenty of time to grow before being planted outdoors later in the year.
Lavender seeds can be sown:
- Indoors on a bright windowsill
- In a heated propagator
- In a greenhouse
Do Lavender Seeds Need Cold Stratification?
Some lavender seeds germinate better after a short cold period.
Optional cold treatment
- Place seeds in a damp paper towel
- Seal inside a bag
- Refrigerate for 2–4 weeks
- Sow immediately after
This can improve germination rates, especially with older seeds.
How to Sow Lavender Seeds (Step-by-Step)
- Fill seed trays or small pots with free-draining seed compost
- Gently firm the surface
- Scatter seeds thinly on top
- Lightly press seeds into the compost
- Cover very lightly with compost or vermiculite
- Water gently from below or mist
- Place in a warm, bright location
Lavender seeds need light to germinate, so do not bury them deeply.
Best Conditions for Germination
- Temperature: 18–22°C
- Bright light (not direct hot sun)
- Compost kept moist but not wet
Germination usually takes 14–28 days, though some seeds may take longer.
Caring for Lavender Seedlings
Once seedlings appear:
- Keep them in bright light
- Avoid overwatering
- Ensure good airflow
- Allow compost to dry slightly between watering
Lavender seedlings dislike damp conditions.
When to Pot On Lavender Seedlings
Seedlings are ready to pot on when they have:
- Several sets of true leaves
- Strong upright growth
Transplant carefully into individual pots using gritty compost. Handle seedlings by the leaves rather than the stem.
Growing Lavender Seeds into Plants
As seedlings grow:
- Keep in full light
- Water sparingly
- Avoid heavy feeding
Too much fertiliser causes weak, leafy growth rather than strong plants.
Hardening Off Lavender Seedlings
Before planting outdoors:
- Gradually expose plants to outdoor conditions
- Start with a few hours a day
- Increase exposure over 7–10 days
This helps prevent shock and strengthens plants.
When to Plant Lavender Outdoors
Lavender grown from seed can be planted outside:
- Late spring to early summer
- After the risk of frost has passed
- Once plants are well established
Choose a sunny, well-drained position.
Soil Requirements for Lavender
Lavender needs:
- Free-draining soil
- Sandy, gritty, or chalky texture
- Neutral to alkaline conditions
Avoid rich compost and waterlogged soil.
Will Lavender Grown from Seed Flower in the First Year?
- Some plants may flower lightly in their first year
- Most lavender flowers fully in the second year
This is normal and leads to stronger, longer-lived plants.
Which Lavender Is Best Grown from Seed?
Common lavender types grown from seed include:
- English lavender (Lavandula angustifolia)
- French or Spanish lavender (Lavandula stoechas)
English lavender is the easiest and most reliable for beginners.
Common Problems with Lavender Seeds
Seeds Not Germinating
- Compost too wet
- Temperature too low
- Seeds buried too deeply
- Insufficient light
Seedlings Damping Off
- Overwatering
- Poor airflow
- Cold, wet conditions
Reducing moisture usually resolves most problems.
Advantages of Growing Lavender from Seed
- Cheaper than buying plants
- Produces strong, well-adapted plants
- Ideal for large plantings or hedges
- Long-lived results
Lavender grown from seed often establishes better than shop-bought plants.
Final Thoughts
Lavender seeds require patience, but the rewards are well worth it. With the right conditions — light, warmth, excellent drainage, and restrained watering — lavender seeds germinate reliably and grow into tough, fragrant plants that thrive for years. Whether filling borders, pots, or a lavender hedge, starting from seed is a satisfying and economical choice.