Lavender Growing: Intermediate Techniques for Thriving Plants

Introduction

You've successfully grown lavender and want to expand your skills. This intermediate guide covers propagation techniques, advanced variety selection, companion planting strategies, pest and disease management, and methods to maximize both yield and fragrance.

Propagation Methods

Lavender can be propagated through several methods, each with distinct advantages.

Stem Cuttings (Most Reliable)

Best time: Late spring (softwood) or late summer/fall (semi-hardwood)

Softwood cuttings (spring):

1. Select healthy, non-flowering shoots 3-4 inches long
2. Cut just below a leaf node
3. Remove leaves from lower 2 inches
4. Dip in rooting hormone (optional but helpful)
5. Insert in moist, well-draining propagation medium
6. Keep in bright, indirect light with high humidity
7. Roots develop in 3-6 weeks

Semi-hardwood cuttings (late summer/fall):

1. Select current season's growth that has begun to harden
2. Cut 4-6 inch sections with a "heel" (strip of older wood)
3. Remove lower leaves
4. Insert in gritty propagation mix
5. Keep cool and moist over winter
6. Transplant in spring

Rooting media options:

Layering

A simple, low-effort method for producing a few new plants:

1. Select a flexible lower stem
2. Bend to ground, wound the underside lightly
3. Bury the wounded section 1-2 inches deep
4. Pin in place with wire or stone
5. Keep moist (not wet)
6. Roots form in 4-6 months
7. Sever from parent and transplant

Growing from Seed (Challenging)

Lavender seed germination is slow and inconsistent:

Tips for seed starting:

• Stratify seeds (cold treatment) for 3-4 weeks in refrigerator
• Surface sow on moist mix (seeds need light)
• Germination takes 2-4 weeks at 65-70°F
• Seedlings grow slowly
• May not come true to parent (variable)

Note: Cuttings are far more reliable and produce identical plants. Seeds are best for producing large numbers of plants or experimenting.

Advanced Variety Selection

Understanding Lavender Chemistry

Lavender's value comes from its essential oil composition:

Variety Selection by Purpose

For culinary use:

• 'Munstead': Classic culinary variety, milder flavor
• 'Royal Velvet': Sweet, less camphor
• English types preferred (lower camphor)

For sachets and crafts:

• 'Hidcote': Deep color holds well when dried
• 'Provence': Long stems, fragrant
• 'Grosso': High oil content, strong scent

For essential oil:

• 'Grosso': Industry standard lavandin
• 'Maillette': High linalyl acetate, true lavender oil
• Any high-oil cultivar

For cold hardiness (zones 5-6):

• 'Munstead': Zone 5 hardy
• 'Hidcote': Zone 5 hardy
• 'Phenomenal': Heat and cold tolerant

For humid climates:

• 'Phenomenal': Bred for humidity tolerance
• 'Grosso': Good humidity tolerance
• Spanish lavender: Handles humidity better

Climate Considerations

Companion Planting with Lavender

Beneficial Companions

Lavender's aromatic oils deter many pests, making it valuable in the garden:

Mediterranean herb companions:

Vegetable garden companions:

Flower companions:

Plants to Avoid Near Lavender

Maximizing Fragrance and Oil Content

Environmental Factors

Light:

• More sun = more essential oils
• 8+ hours of direct sun optimal
• South-facing exposure ideal

Stress factors:

• Mild drought stress concentrates oils
• Lean soil enhances fragrance
• Rocky, poor soil is actually beneficial

Soil:

• Alkaline soil (pH 7.0-7.5) enhances oil production
• Add lime to acidic soils
• Avoid rich, fertile conditions

Harvest Timing for Maximum Fragrance

For dried flowers/sachets:

• Harvest when 25-50% of buds are open
• Essential oils peak just before full bloom
• Morning harvest after dew dries

For fresh cut flowers:

• Harvest when color shows but buds not fully open
• Will continue to open in vase

For essential oil distillation:

• Harvest when 50-100% of buds are blooming
• Distill same day or dry immediately

Pest and Disease Management

Common Pests

Aphids

Spittlebugs

Whiteflies

Spider Mites

Disease Management

Root Rot (Phytophthora, Pythium, Fusarium)

The #1 killer of lavender:

Septoria Leaf Spot

Gray Mold (Botrytis)

Pruning Techniques

Annual Pruning Schedule

Spring pruning (early spring):

1. Remove any winter damage
2. Light shaping only
3. Don't cut into old wood

Post-bloom pruning (late summer):

1. Cut back 1/3 of total plant height
2. Shape into rounded mound
3. Include spent flower stems
4. This is the main pruning

Pruning Rules

DO:

• Prune annually after flowering
• Cut into green growth only
• Shape into a mounded form
• Remove all spent flower stems

DON'T:

• Cut into bare, woody stems
• Prune late in fall (before frost)
• Remove more than 1/3 at once
• Skip annual pruning (leads to woody center)

Harvesting and Preservation

Harvest Methods

For dried bundles:

1. Cut stems 6-10 inches long
2. Gather 15-20 stems per bundle
3. Secure with rubber band (tightens as stems dry)
4. Hang upside down in dark, dry, airy location

For culinary buds:

1. Harvest when buds are tight, showing color
2. Strip buds from stems immediately or after drying
3. Store in airtight container
4. Use sparingly—flavor is intense

Drying Methods

Storage

Dried buds:

• Airtight glass jars
• Cool, dark location
• Maintains quality 1-2 years

Dried bundles:

• Away from direct light
• Low humidity
• Color and scent last 6-12 months

Making Lavender Products

Lavender Sachets

1. Dry lavender buds completely
2. Fill small fabric bags (2-4 tablespoons per sachet)
3. Use for drawers, closets, pillows
4. Squeeze periodically to refresh scent
5. Replace annually

Culinary Lavender Sugar

1. Layer 2 tablespoons dried culinary lavender with 1 cup sugar
2. Seal in jar for 2 weeks, shaking occasionally
3. Strain out lavender or leave in
4. Use in baking, tea, cocktails

Lavender Linen Spray

1. Combine 2 cups distilled water + 2 tablespoons vodka
2. Add 20-30 drops lavender essential oil
3. Shake well before each use
4. Spray on linens, pillows, rooms

Seasonal Care Calendar

Conclusion

Mastering lavender growing involves understanding propagation, selecting appropriate varieties, and implementing proper pruning. The skills in this guide will help you multiply your plants, extend their productive life, and enjoy lavender in countless ways.

Ready for more? Our Advanced Guide covers intensive production methods, essential oil chemistry, and commercial growing strategies.