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Caring for perennial lavender comes down to three simple things: sunlight, drainage, and restraint.
Perennial lavender is a tough, drought-loving herb that thrives when you treat it more like a Mediterranean wildflower than a delicate garden pet.
Once you understand how to care for perennial lavender properly, it will reward you with fragrant blooms for years.
In this post, we’ll walk through how to care for perennial lavender from planting to pruning.
How to Care for Perennial Lavender Successfully
To care for perennial lavender successfully, you need to give it the conditions it evolved in.
Here’s how to do it right.
1. Give Perennial Lavender Full Sun
Perennial lavender needs at least six to eight hours of direct sunlight every day.
The more sun it gets, the more flowers it produces and the stronger its scent becomes.
If you plant lavender in shade, it will grow leggy, bloom poorly, and become more prone to disease.
So when you’re deciding how to care for perennial lavender, start with the sunniest spot in your yard.
2. Plant Perennial Lavender in Well-Draining Soil
Perennial lavender hates wet feet more than almost anything else.
If water sits around its roots, the plant develops root rot and dies quickly.
Mix sand or grit into your soil if it’s heavy clay, or plant lavender in a raised bed.
A slightly alkaline, sandy, or gravelly soil is ideal for lavender.
This is the single most important step in how to care for perennial lavender, because great drainage prevents most lavender problems before they start.
3. Water Perennial Lavender Sparingly
Once perennial lavender is established, it’s drought-tolerant and rarely needs extra water.
Deep water once every two to three weeks during dry spells, then let the soil dry out completely.
Young lavender needs a bit more attention until its roots settle in, usually for the first season.
Overwatering is the number one killer of lavender, so when in doubt, skip the watering can.
Learning how to care for perennial lavender means learning to water less, not more.
4. Prune Perennial Lavender Every Year
Pruning keeps perennial lavender bushy, healthy, and long-lived.
Cut back about one-third of the plant after it finishes blooming in late summer or early fall.
Never cut into the old woody stems, because those won’t regrow.
A light trim in early spring also helps tidy the plant before new growth appears.
This annual pruning is a key part of how to care for perennial lavender, since unpruned plants turn woody and stop producing well.
Common Mistakes When You Care for Perennial Lavender
Even gardeners who know the basics of how to care for perennial lavender can slip up in a few common ways.
Watch out for these.
1. Using Rich, Fertilized Soil
Perennial lavender doesn’t need fertile soil, and too much fertilizer encourages leafy growth at the expense of flowers.
Skip the compost-heavy mixes and use a light, lean soil instead.
2. Mulching Too Heavily
Heavy organic mulch holds moisture around the crown and can cause rot.
Use gravel or sand as a mulch for lavender, or skip mulch altogether in dry climates.
3. Planting in Humidity Without Airflow
Perennial lavender struggles in humid climates if air can’t move freely around the plant.
Space plants apart and avoid crowding them against walls or other shrubs.
4. Watering on a Schedule
Never water lavender just because it’s “watering day.”
Check the soil first, and only water when it’s dry a few inches down.
This small habit makes a huge difference in how to care for perennial lavender over the long haul.
5. Skipping Winter Protection in Cold Zones
In colder regions, perennial lavender benefits from a light layer of gravel or evergreen boughs over the crown.
Avoid heavy mulch or plastic covers, which trap moisture and smother the plant.
How to Care for Perennial Lavender in Pots
Perennial lavender grows beautifully in containers as long as you get the details right.
Choose a pot with plenty of drainage holes and use a gritty, fast-draining mix.
Terracotta works well because it wicks away excess moisture.
In pots, you’ll need to water a bit more often than in the ground, but still let the soil dry between waterings.
Bring pots indoors or into a sheltered spot if your winters are harsh.
Container growing is a great way to care for perennial lavender when your garden soil isn’t ideal.
So, How to Care for Perennial Lavender?
To care for perennial lavender, give it full sun, sharp drainage, and very little water.
Prune it once a year, avoid rich soil and heavy mulch, and it will thrive for a decade or more.
Perennial lavender isn’t fussy, it just wants the dry, sunny conditions it was born for.
Follow these steps on how to care for perennial lavender and you’ll enjoy fragrant blooms season after season.