How to Plant Lavender Seeds: A Step-by-Step Growing Guide
Planting lavender seeds is a rewarding way to grow strong, long-lived plants, but it does require patience. Lavender seeds germinate more slowly than many garden plants, and success depends on light, warmth, drainage, and careful watering. When done correctly, lavender grown from seed often establishes better and lives longer than shop-bought plants.
This guide explains how to plant lavender seeds successfully, from sowing to planting out.
When to Plant Lavender Seeds
The best time to plant lavender seeds is:
- Late winter to early spring (February to April)
Sowing at this time gives seedlings plenty of time to grow before they are planted outdoors later in the year.
Lavender seeds should be started indoors, not directly in the garden.
Do Lavender Seeds Need Cold Stratification?
Lavender seeds can germinate without cold treatment, but germination rates often improve if seeds experience a short cold period.
Optional cold stratification:
- Place seeds on a damp paper towel
- Seal in a plastic bag
- Refrigerate for 2–4 weeks
- Sow immediately after removing from the fridge
This step is especially helpful with older seeds.
What You Need to Plant Lavender Seeds
- Lavender seeds
- Seed trays or small pots
- Free-draining seed compost
- Fine vermiculite or compost
- Water spray bottle
- Warm, bright location
Avoid rich compost, which holds too much moisture.
How to Plant Lavender Seeds (Step-by-Step)
- Fill seed trays or pots with free-draining seed compost
- Gently firm the surface
- Scatter seeds thinly on top of the compost
- Press seeds lightly onto the surface
- Cover very lightly with compost or vermiculite
- Mist gently with water
- Place trays in a bright, warm location
Lavender seeds need light to germinate, so never bury them deeply.
Best Conditions for Germination
- Temperature: 18–22°C
- Bright light (not direct hot sun)
- Compost kept lightly moist, not wet
Germination usually takes 14–28 days, but some seeds may take longer. Be patient and do not overwater.
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 and are prone to rot if kept too wet.
When to Pot On Lavender Seedlings
Lavender seedlings are ready to pot on when they have:
- Several sets of true leaves
- Strong upright growth
Carefully move them into individual pots using gritty compost. Handle seedlings by the leaves, not the stem.
Growing Lavender On
As plants grow:
- Keep in full light
- Water sparingly
- Do not feed heavily
Too much fertiliser causes soft, weak growth rather than strong plants.
⭐ Recommended Products — Garden & Allotment Essentials for March
March is when the growing season truly begins. Seeds are being sown daily, beds are prepared and late frosts are still possible — these essentials help produce strong plants and a successful start.
Seed Trays, Modules & Propagation Kits — perfect for tomatoes, brassicas, lettuce, onions and flowers. 👉
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Heated Propagators, Heat Mats & Grow Lights — improves germination and prevents leggy seedlings during cold nights. 👉
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Seed & Cutting Compost — essential for healthy seedlings and strong root growth. 👉
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Garden Fleece & Plant Protection Covers — protects seedlings, potatoes and early plantings from late frost. 👉
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Spring Vegetable Seeds — carrots, beetroot, peas, spinach and salads can all be started now. 👉
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Garden Kneeler & Seat — makes long sowing and planting sessions far more comfortable. 👉
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Pressure Washer (Greenhouse & Patio Cleaning) — clean patios, paths and greenhouses before planting. 👉
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Solar Garden Lights — perfect for enjoying the garden during brighter spring evenings. 👉
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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 prevents shock and helps plants adjust.
When to Plant Lavender Seedlings Outside
Lavender seedlings can be planted outside:
- Late spring to early summer
- After all risk of frost has passed
- Once plants are well established
Choose a sunny position with free-draining soil.
Soil Requirements for Lavender
Lavender grown from seed needs:
- Free-draining soil
- Sandy, gritty, or chalky texture
- Neutral to alkaline conditions
Avoid rich compost, clay soil, and waterlogged areas.
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.
Common Problems When Planting Lavender Seeds
Seeds Not Germinating
- Too much water
- Seeds buried too deeply
- Temperature too low
- Not enough light
Seedlings Collapsing
- Overwatering
- Poor airflow
- Cold, wet compost
Reducing moisture usually solves most issues.
Why Grow Lavender from Seed?
- Cheaper than buying plants
- Produces strong, well-adapted plants
- Ideal for hedges and large plantings
- More satisfying long-term results
Lavender grown from seed often establishes better than nursery plants.
Final Thoughts
Planting lavender seeds takes patience, but the results are worth it. With light, warmth, excellent drainage, and careful watering, lavender seeds germinate reliably and grow into tough, fragrant plants that thrive for years. Start seeds indoors, resist overwatering, and give them plenty of light — and you’ll be rewarded with healthy lavender plants ready for the garden.