Your Cool Home is supported by its readers. Please assume all links are affiliate links. If you purchase something from one of our links, we make a small commission from Amazon. Thank you!
Maintaining a lavender tree is all about giving it the right balance of sunlight, drainage, and pruning so it stays healthy and keeps its lovely shape.
If you’ve been wondering how to maintain a lavender tree without it turning leggy or woody, you’re in the right place.
These plants aren’t hard to look after once you understand what they need.
In this post, we’ll walk through exactly how to maintain a lavender tree, from watering and pruning to overwintering and repotting.
Let’s get into it.
How to Maintain a Lavender Tree: The Basics
Learning how to maintain a lavender tree starts with understanding what this plant actually is.
A lavender tree is simply a lavender shrub that’s been trained to grow with a single woody stem and a rounded canopy on top.
It’s sometimes called a lavender standard, and it looks elegant in pots or as a patio feature.
Because it’s essentially a shrub shaped into a tree form, maintaining a lavender tree means keeping that shape while supporting healthy growth.
Here are the key things to focus on.
1. Give It Plenty of Sunlight
Lavender trees need at least six to eight hours of direct sunlight every day.
Without enough sun, the plant grows weak, produces fewer flowers, and becomes more prone to disease.
So place your lavender tree somewhere bright, like a south-facing patio or a sunny windowsill.
If you’re maintaining a lavender tree indoors, rotate it regularly so all sides get equal light.
2. Water Deeply but Infrequently
Overwatering is the number one killer of lavender trees.
These plants are native to the dry Mediterranean, so they hate soggy roots.
When you maintain a lavender tree, let the soil dry out completely between waterings.
Then water deeply until it drains out the bottom of the pot.
If your lavender tree is in the ground, water only during long dry spells.
3. Use Well-Draining Soil
The right soil makes maintaining a lavender tree so much easier.
Use a gritty, sandy mix that drains fast.
If you’re growing your lavender tree in a pot, add perlite or coarse sand to regular potting soil.
You can even mix in a little lime to keep the soil slightly alkaline, which lavender loves.
Pruning: The Heart of Maintaining a Lavender Tree
If you take away one thing about how to maintain a lavender tree, let it be this: pruning matters.
Without regular pruning, your lavender tree gets woody, floppy, and stops producing those fragrant blooms.
So how do you prune a lavender tree properly?
1. Prune After Flowering
The best time to prune a lavender tree is right after it finishes blooming.
This is usually late summer or early fall.
Cut back the flower stems and about a third of the green growth.
Just be careful not to cut into the old woody stem, as lavender often won’t regrow from bare wood.
2. Shape the Canopy
To maintain a lavender tree’s round shape, trim the canopy lightly throughout the growing season.
Pinch off spent flowers as they fade to encourage more blooms.
This keeps your lavender tree looking tidy and full instead of straggly.
3. Remove Dead or Damaged Wood
Any time you notice dead, diseased, or crossing branches, snip them off.
This improves airflow and reduces the risk of rot.
It’s a small step, but it goes a long way when you maintain a lavender tree over many years.
Overwintering and Repotting Your Lavender Tree
How you maintain a lavender tree through winter depends on where you live.
Lavender is hardy in warmer zones, but in colder areas, a lavender tree in a pot needs protection.
1. Bring Potted Trees Indoors
Before the first frost, move your potted lavender tree into a cool, bright spot.
A sunroom, garage, or unheated porch works well.
Keep watering minimal during winter, just enough to stop the soil from bone dry.
2. Protect In-Ground Plants
If your lavender tree is planted in the ground, mulch around the base with gravel or straw.
This insulates the roots without trapping moisture against the stem.
Avoid heavy mulch like compost, which holds too much water.
3. Repot Every Couple of Years
Potted lavender trees benefit from repotting every two to three years.
Choose a pot just one size bigger and refresh the soil with a gritty mix.
This keeps roots healthy and helps you maintain a lavender tree that thrives rather than just survives.
Common Mistakes When You Maintain a Lavender Tree
Even careful gardeners run into trouble when they maintain a lavender tree.
Here are a few pitfalls to avoid.
1. Overwatering
Yellow leaves and wilting are often signs of too much water, not too little.
Always check the soil before reaching for the watering can.
2. Skipping Pruning
Let your lavender tree go unpruned for a season or two and it’ll turn woody fast.
Stay consistent with light trims to keep it looking like a tree and not a shrub.
3. Using Rich Fertilizer
Lavender trees don’t need much feeding.
Too much fertilizer causes soft, leafy growth with fewer flowers.
A light feed once in spring is plenty.
So, How Do You Maintain a Lavender Tree?
You maintain a lavender tree by giving it full sun, well-draining soil, infrequent deep watering, and regular pruning.
It also helps to protect it from cold and repot it every few years.
When you maintain a lavender tree with these simple habits, it rewards you with silvery foliage and fragrant blooms season after season.