Lavender Tree

A lavender tree is not a true tree but a lavender plant trained into a topiary form, with a single woody stem and a rounded crown of fragrant foliage and purple blooms. Often sold as "lavender trees" at garden centers, these compact plants thrive in full sun and well-draining soil and can be grown outdoors or kept indoors part of the year. With proper pruning and care, lavender trees stay small, add structure to patios and gardens, and return each season in suitable climates.

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I've spent years growing lavender in garden beds and containers, both indoors and outdoors. Along the way, I also dry lavender and use my harvest in baking and simple home projects.

One of my favorite ways to grow lavender is as a lavender tree, sometimes called a lavender topiary, because it brings both structure and softness to a space with its upright form and fragrant blooms.

A lavender tree has the same silvery foliage and purple flowers as traditional lavender, but it's trained into a single stem with a rounded top, giving it a more architectural look. You'll often see them styled in pots on patios, porches, or sunny indoor spaces, where they add height and interest without taking up much room.

The good news is that lavender trees are not difficult to care for once you understand the basics. Light, drainage, watering habits, and pruning matter far more than complicated routines, and care can vary slightly depending on whether your tree is grown indoors or outdoors.

This growing guide is part of our full Herb Index, where you'll find care instructions, propagation tips, and harvesting timelines for each herb.

What is a lavender tree?

A lavender tree starts as a standard lavender plant, but instead of growing outward as a shrub, it's trained through pruning to grow upward on a single stem with a rounded crown of foliage and flowers. While traditional lavender grows as a low, bushy shrub, these upright forms are shaped through regular pruning to grow up instead of out.

The most common varieties used for lavender trees are English lavender (Lavandula angustifolia) and Spanish lavender (Lavandula stoechas), though French lavender can also be trained successfully. English lavender is a perennial in many climates and tends to be more cold hardy, which makes it a better choice for outdoor lavender trees in cooler regions, including Zone 6.

Lavender trees typically grow about 2 to 3 feet tall, with a rounded top that spreads 1 to 2 feet wide. Their compact size makes them ideal for containers, patios, small gardens, and anywhere you want added height without taking up much ground space.

Lavender tree care at a glance

Short on time? These are the basic care needs for a healthy lavender tree.

Indoor Trees:

Pot: Choose a container 1 to 2 inches wider than the root ball with excellent drainage
Light: Bright, direct light. A south-facing window is ideal
Water: Allow the top 2 inches of soil to dry between waterings
Soil: Use a fast-draining mix with added perlite or sand
Prune: Remove shoots from the trunk and shape the top regularly

Outdoor Trees:

Location: Full sun, at least 6 hours per day
Soil: Well-draining soil amended with grit or perlite
Water: Deep but infrequent watering once established
Winter: Bring potted trees indoors in zones below 7
Prune: Shape after flowering and remove trunk shoots promptly

Common Mistakes to Avoid:

• Overwatering, the most common cause of failure
• Using regular garden soil that holds too much moisture
• Growing in low light, which leads to leggy growth
• Over-fertilizing, which reduces flowering

Best varieties for lavender trees

Not all lavender varieties are well suited for training into tree form. Some grow too densely, others spread too wide, and a few simply refuse to hold a clean, rounded shape. After growing and testing many varieties over the years, these are the ones that perform most reliably as lavender trees.

For beginners:

• 'Hidcote' English lavender: Compact growth and sturdy stems
• 'Munstead' English lavender: Naturally upright habit makes training easier
• 'Anouk' Spanish lavender: Quick-growing with distinctive flower shape

For cold climates:

• 'Arp' English lavender: Survives down to zone 5 outdoors
• 'Phenomenal' English lavender: Handles humidity better than most

For indoor trees:

• 'Goodwin Creek Grey': Tolerates indoor conditions well
• 'Silver Anouk': Attractive silvery foliage even when not blooming

In general, smaller-leaved varieties are easier to maintain as lavender trees. Large, sprawling lavenders may look impressive in the ground, but they tend to flop or lose their shape when trained as standards.

Purchasing a lavender tree

Lavender trees are often sold already trained into topiary form, which makes them a great option if you want the look without the time it takes to shape one yourself. Garden centers and nurseries typically carry them seasonally, especially in spring.

When choosing a pre-trained lavender tree, look for a plant with a straight, sturdy trunk and healthy growth at the top. The foliage should be full and green, with no large woody or bare patches. Avoid plants sitting in soggy soil or containers without proper drainage, as excess moisture is one of the fastest ways to lose a lavender tree.

Pay more attention to the health of the roots and overall structure than the decorative pot it comes in. A healthy lavender tree can always be repotted, but poor root health is difficult to correct later.

Tips for planting your lavender tree

Whether you've purchased a pre-trained lavender tree or grown your own, proper planting plays a major role in long-term success. Lavender trees prefer dry roots, excellent drainage, and a setup that allows air to move freely around the base.

For container growing

• Choose a pot only 1 to 2 inches wider than the root ball
• Make sure the container has excellent drainage
• Use terra cotta or unglazed ceramic pots when possible
• Avoid oversized containers that hold excess moisture

For garden planting

• Select a location with full sun, at least 6 hours per day
• Amend soil with grit or sand to improve drainage
• Create a slight mound if your soil tends to stay wet
• Space lavender trees at least 2 feet apart

Lavender grows best in lean, fast-draining soil. A simple planting mix using potting soil combined with perlite and sand works well, especially for containers. Avoid rich composts or heavy garden soil, which hold too much moisture and can lead to root problems.

Tip: When planting or transplanting, handle the trunk carefully and set the plant at the same depth it was growing before. Water lightly after planting, then allow the soil to dry before watering again. Overwatering is the most common cause of failure with lavender trees.

Indoor lavender tree care

Lavender trees can grow successfully indoors with the right conditions. The goal is to provide strong light (mine do best in my south facing window), excellent drainage, and an environment that stays on the dry side rather than overly cozy or humid.

Choose the right container

Use a pot that is only 1 to 2 inches wider than the root ball. Lavender prefers slightly snug conditions, and oversized containers hold excess moisture that can lead to root problems.

Terra cotta or unglazed ceramic pots work especially well because they allow moisture to evaporate more easily than plastic containers.

Indoor potting soil

Lavender does best in fast-draining soil. A lightweight mix that does not retain excess moisture is key for indoor growing.

A simple option is a blend of standard potting soil mixed with sand or grit and perlite to improve drainage. Avoid rich, moisture-holding mixes, which can cause roots to stay wet for too long.

Light requirements

Light is the most important factor for indoor lavender trees. Place your plant in the brightest location possible, ideally a south-facing window where it can receive at least 6 hours of direct sunlight per day.

If adequate natural light is not available, a grow light is recommended, especially during fall and winter months. Insufficient light leads to weak, leggy growth and reduced flowering.

Temperature and humidity

Lavender prefers moderate indoor temperatures with cooler nights, ideally around 60°F. Avoid placing your tree near heating vents, drafty doors, or areas with frequent temperature fluctuations.

Humidity should remain low to moderate. Lavender does not benefit from humidifiers and generally performs well in dry indoor air.

Air circulation

Good airflow helps prevent pest issues and fungal problems. Stagnant indoor air can stress lavender, especially in winter when windows remain closed.

A gentle fan nearby is sufficient to keep air moving. Avoid strong or direct airflow on the plant.

Common indoor pests

Lavender is relatively pest-resistant, but indoor conditions can occasionally attract spider mites, aphids, or fungus gnats. Check the undersides of leaves and the soil surface regularly.

If pests appear, allow the soil to dry slightly between waterings and use simple controls such as neem oil sprays or gently wiping leaves with a damp cloth.

Preventing leggy growth

Leggy growth is a sign of inadequate light. If stems begin stretching toward the window, increase light exposure or add a grow light.

Rotating the pot every few days helps maintain even growth. Light pinching of new growth encourages a fuller, more compact shape.

Fertilizing indoor lavender trees

Indoor lavender trees require minimal fertilization. Overfeeding encourages soft growth and fewer blooms.

Apply a light, diluted fertilizer only during the active growing season in spring and early summer. Skip fertilizing entirely in fall and winter. Lavender performs best when nutrients are kept modest and soil remains well-drained.

Outdoor lavender tree care

Lavender trees thrive outdoors when given full sun, excellent drainage, and minimal interference. Whether your tree lives outside year-round or spends summers outdoors, these guidelines will keep it healthy and well-shaped.

Choosing the right location

Lavender requires full sun to perform well outdoors. Choose a location that receives at least 6 to 8 hours of direct sunlight each day.

The site should be open and bright with good air circulation, especially while the tree is establishing. Avoid low spots where water collects after rain. If your soil stays consistently damp, container growing or raised planting is a better option.

Planting in the ground

Dig a hole the same depth as the root ball and about twice as wide. Set the tree so the top of the root ball sits level with the soil surface. Do not bury the trunk.

Space lavender trees at least 2 feet apart to allow airflow and reduce disease pressure.

Backfill with amended soil, press gently to remove air pockets, and water lightly to settle the roots. Avoid deep or frequent watering during establishment.

Outdoor soil requirements

Lavender prefers lean, fast-draining soil. Rich or moisture-retentive soil leads to weak growth and root problems.

A reliable outdoor mix includes native soil amended with coarse sand or crushed granite and a small amount of perlite to improve drainage.

Avoid compost, manure, or heavily amended garden soil. If your soil is clay-heavy, plant on a slight mound or in a raised bed to improve drainage.

Managing weather and seasonal stress

Lavender trees are more delicate than bush lavender. In windy areas, stake young trees during their first season to prevent trunk damage.

In colder climates, outdoor lavender trees require protection. In zones 5 to 7, trees should be planted in sheltered locations and mulched lightly at the base with gravel or straw. Avoid covering the trunk.

Container-grown trees should be moved to a protected garage, porch, or indoor space before hard freezes. In spring, reintroduce them outdoors gradually to prevent stress.

Pests and diseases

Lavender is naturally resistant to most pests, but outdoor plants may occasionally encounter aphids or spittlebugs. These are easily managed with water sprays or manual removal.

Fungal issues are almost always related to excess moisture. Yellowing leaves, wilting, or soft stems often indicate poor drainage or overwatering. Correct soil conditions rather than applying treatments.

Fertilizing outdoor lavender trees

Outdoor lavender trees require very little fertilizer. For in-ground trees, one light application of a balanced, slow-release fertilizer in early spring is sufficient for the entire growing season.

If growth appears weak or flowering declines, lightly top-dress with compost placed away from the trunk or add a small amount of calcium-rich amendment such as crushed eggshells. Avoid frequent feeding, as excess nutrients reduce flowering and weaken structure.

Lavender tree planters and companion plants

Lavender trees look beautiful on their own, but they also work well as the focal point in a mixed container when planted thoughtfully.

If you choose to plant companions around your lavender tree, keep these guidelines in mind:

• Use a container at least 12 to 16 inches wide with excellent drainage
• Choose plants that prefer full sun and dry soil
• Leave 2 to 3 inches of open space around the trunk for airflow

Good companion options for lavender include creeping thyme, sweet alyssum, sedum, and silver-foliage plants that will not compete for moisture.

If you want detailed planter layouts, seasonal combinations, and companion plant ideas, see my full guide on creating lavender tree planters.

Seasonal care for lavender trees

Lavender trees don't need constant attention, but their care does change slightly throughout the year. This seasonal overview helps you stay on track without overthinking it.

Spring

Move your lavender tree to a brighter spot as daylight increases. Resume light pruning to maintain shape and begin feeding once a month with a diluted fertilizer if new growth appears. Check for root binding and repot only if necessary.

Summer

Water when the top inch of soil feels dry. If possible, gradually move your plant outdoors for the summer, allowing it to acclimate slowly to prevent sun stress. Continue light pruning and watch for spider mites or aphids in dry indoor air.

Fall

Bring your lavender tree indoors before nighttime temperatures drop below 45°F. Reduce watering and stop fertilizing so the plant can naturally slow down. Give it a final light prune and rotate the pot weekly to keep growth even.

Winter

Place your lavender tree in the brightest window available. Water sparingly, usually every 10 to 14 days. Skip fertilizer entirely and check occasionally for pests that thrive in dry indoor conditions.

Troubleshooting common lavender tree problems

Most lavender tree issues come down to light, water, or drainage. If your plant looks unhappy, check these common symptoms and quick fixes before making big changes.

Yellowing leaves
Yellow leaves are most often caused by overwatering or poor drainage. Let the soil dry out between waterings and make sure excess water can escape freely from the pot or planting area.

Leggy or stretched growth
Long, thin stems with sparse foliage usually mean the plant is not getting enough light. Move your lavender tree to a brighter location and prune lightly to encourage compact growth.

Drooping or wilting leaves
Wilting can be caused by either too much or too little water. Check the soil moisture before watering and adjust gradually rather than drastically.

Poor flowering
A lack of blooms is typically related to insufficient sunlight or overfertilizing. Lavender trees need at least six hours of direct sun and minimal feeding to flower well.

Pests
Spider mites, aphids, and fungus gnats can appear when air circulation is poor or conditions stay too damp. Improve airflow, allow soil to dry slightly, and treat infestations early with insecticidal soap if needed.

For a detailed troubleshooting chart with indoor and outdoor comparisons, see my complete guide to lavender tree problems and solutions.

Frequently asked questions

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