How Close Can You Plant Crepe Myrtle Trees

You can plant crepe myrtle trees as close as 6 to 10 feet apart, but the exact distance depends on the mature size of the specific variety you choose.
 
If you’re wondering how close you can plant crepe myrtle trees, the short answer is that spacing is all about giving each tree enough room to breathe and show off its natural shape.
 
Planting them too close together creates a crowded mess, while planting them too far apart can leave gaps in your landscape design.
 
The key is matching the spacing to the expected width of the crepe myrtle tree at full maturity.
 
In this post, we’ll break down how close you can plant crepe myrtle trees for different varieties, why spacing matters, and some practical tips for getting it right the first time.
 
Let’s dig in.
 

How Close Can You Plant Crepe Myrtle Trees For Different Varieties

How close you can plant crepe myrtle trees really comes down to the type you’re working with, because these trees range from petite dwarfs to towering giants.
 
Knowing the mature spread of your specific crepe myrtle tree is the single most important factor when deciding on spacing.
 
Here’s a simple breakdown of spacing based on the most common crepe myrtle tree categories.
 

1. Dwarf Crepe Myrtle Trees – 4 to 6 Feet Apart

If you’re planting dwarf crepe myrtles, you can plant them as close as 4 to 6 feet apart, and they’ll still have plenty of room to thrive.
 
Dwarf varieties typically max out at around 4 to 6 feet in both height and width, making them perfect for tight spaces or low hedges.
 
When you plant crepe myrtle trees this close, they’ll create a lush, continuous look that’s ideal for foundations or along a fence line.
 
Just keep in mind that even dwarfs need good airflow, so don’t push them closer than 4 feet no matter how impatient you are.
 
At this spacing, the crepe myrtle trees will eventually touch but not tangle, giving you a neat, manicured appearance.
 

2. Medium Crepe Myrtle Trees – 10 to 12 Feet Apart

Medium crepe myrtles, which grow to about 10 to 15 feet tall and wide, should be planted roughly 10 to 12 feet apart.
 
This is the most common category for home landscapes, so knowing how close you can plant crepe myrtle trees in this range is super helpful.
 
At 10 feet apart, the branches will intermingle slightly as they mature, but that’s actually fine if you want a bit of a canopy effect.
 
If you prefer each crepe myrtle tree to stand out as a specimen, go closer to the 12-foot mark.
 
This spacing also prevents the roots from competing too aggressively for water and nutrients below the soil.
 

3. Large Crepe Myrtle Trees – 15 to 20 Feet Apart

For the big boys, like the Natchez or Muskogee varieties, you’ll need to plant crepe myrtle trees at least 15 to 20 feet apart.
 
These giants can easily reach 25 to 30 feet tall with a spread of 20 feet or more, so they need serious elbow room.
 
When you plant crepe myrtle trees this large too close together, they’ll shade each other out and lose their beautiful exfoliating bark on the lower trunks.
 
Give them the full 20 feet if you can, because a mature large crepe myrtle tree is a showstopper that deserves its own space.
 
At this distance, you’ll get that classic multi-trunk form with no crowding at all.
 

Why Spacing Matters When You Plant Crepe Myrtle Trees

Spacing isn’t just about looks, it directly impacts the health and longevity of your crepe myrtle trees.
 
When you plant crepe myrtle trees too close, you’re setting yourself up for a host of problems down the road.
 
Here’s why getting the distance right is so critical.
 

1. Air Circulation Prevents Disease

Crepe myrtle trees are prone to powdery mildew and sooty mold, especially in humid climates.
 
Good air circulation is your best defense, and that only happens when you plant crepe myrtle trees with proper spacing.
 
Crowded trees trap moisture on the leaves, which creates a perfect breeding ground for fungal diseases.
 
So when you’re asking how close you can plant crepe myrtle trees, always err on the side of a little more room rather than less.
 

2. Root Competition Stunts Growth

Beneath the soil, crepe myrtle roots spread out as wide as the canopy.
 
If you plant crepe myrtle trees too close together, their roots will fight for the same water and nutrients.
 
This competition can stunt growth, reduce blooming, and make your trees more vulnerable to drought stress.
 
Giving each crepe myrtle tree its own root zone ensures they all get what they need to flourish.
 

3. Sunlight Exposure Keeps Them Blooming

Crepe myrtle trees need full sun, at least six hours a day, to produce those spectacular summer blooms.
 
When you plant crepe myrtle trees too close, taller ones will cast shade on shorter neighbors.
 
That shade reduces flowering and can make the shaded side of the tree look thin and scraggly.
 
Proper spacing means every crepe myrtle tree gets sunshine from all angles, keeping the entire plant covered in blossoms.
 

Practical Tips For Planting Crepe Myrtle Trees Closer Together

Maybe you have a narrow planting bed and you absolutely need to plant crepe myrtle trees closer than the recommended spacing.
 
It’s possible to do it successfully, but you’ll need to adjust your care routine.
 

1. Choose Columnar or Upright Varieties

Some crepe myrtle trees naturally grow in a narrow, upright form rather than spreading wide.
 
Varieties like ‘Arapaho’ or ‘Tonto’ have a more columnar habit, which means you can plant them slightly closer together.
 
Just remember that even these will eventually widen, so don’t reduce the distance by more than 20% of the recommendation.
 

2. Prune Regularly to Control Width

If you need to plant crepe myrtle trees close, you’ll be committing to regular pruning to keep them in check.
 
Thin out crossing branches and trim back any growth that reaches toward a neighbor.
 
This won’t stop the roots from spreading, but it will keep the tops from becoming a tangled mess.
 
Just avoid the bad habit of “topping” crepe myrtles, which ruins their natural shape and weakens the wood.
 

3. Water Deeply and Fertilize More Often

Closer spacing means more competition, so you’ll need to compensate with extra water and nutrients.
 
Water deeply once or twice a week during dry spells, making sure the soil is moist down to 12 inches.
 
Apply a balanced fertilizer in early spring to give all the crepe myrtle trees a good boost.
 
This extra care helps offset the stress of being planted closer together.
 

So, How Close Can You Plant Crepe Myrtle Trees?

You can plant crepe myrtle trees as close as 4 feet for dwarfs, 10 feet for mediums, and 20 feet for large varieties.
 
The exact distance depends on the mature width of your specific crepe myrtle tree, so always check the tag before planting.
 
When in doubt, measure the expected spread and add a couple of feet to give your trees a little breathing room.
 
Remember that how close you can plant crepe myrtle trees is ultimately a balance between your design goals and the tree’s long-term health.
 
A little extra space now will save you from major headaches like disease, poor blooming, and crowded roots later.
 
So grab your tape measure, pick the right variety for your space, and plant those crepe myrtles with confidence.
 
Your future self will thank you when they’re thriving and covered in gorgeous blooms every single summer.