Will a Crepe Myrtle Damage the Home?

Dec 13, 2023

Crepe Myrtles (Lagerstroemia indica) are popular flowering trees known for their vibrant blooms and climate-friendly appearance. You may be interested in planting Crepe Myrtles beside your walls and driveways.

But many of my readers ask me a question—will a Crepe Myrtle damage the home? Their shallow, spreading root systems have raised concerns about potential damage to properties and structures.

So today, I will take you to explain the factors for Crepe Myrtles to cause damage, the extent of root spread, the likelihood of foundation damage, and effective maintenance practices to mitigate risks.

Do Crepe Myrtles Have Deep Roots?

I agree that Crepe Myrtles have impressive height and vibrant blooms. But Crepe Myrtles also have shallow and non-invasive roots. This means their root system can extend quite wide, reaching up to three times the width of the tree’s canopy.

So what’s the problem here? Clearly, the roots can compete with other plants for nutrients and water, especially those planted close to the tree. For this reason, I would advise to remove turf grass around the tree’s base.

Anyway, crepe myrtles tend to reproduce vigorously through shoots, suckers, and seed pods. If not managed properly, this can lead to an overabundance of Crepe Myrtles in your landscape.

What Are the Root Systems for Crepe Myrtle?

Root Structure of Crape Myrtle Tree:

The crepe myrtle tree root system is known for being exceptionally robust and spreading. It consists primarily of a shallow, fibrous root system that extends horizontally rather than deep into the ground.

Shallow but Extensive:

Crape myrtle roots typically extend horizontally, sometimes as far as 3 feet beyond the tree’s canopy. This broad spread helps the tree capture water and nutrients from a wide area.

Fibrous Roots:

The tree’s roots are fibrous, consisting of many fine roots that help the tree absorb water and nutrients effectively. This is especially beneficial in dry conditions.

Growth Pattern:

Crepe myrtle trees tend to develop a few main roots with numerous smaller lateral roots. These lateral roots help in stabilizing the tree and anchoring it securely in the soil.

Adaptation to Soil Conditions:

The crepe myrtle tree’s root system adapts to a variety of soil conditions but prefers well-drained, slightly acidic soils. Thanks to its extensive root network, it is also known to tolerate drought once established.

Avoiding Root Damage:

The roots of the crepe myrtle tree are typically shallow, making them vulnerable to damage during deep cultivation or digging around the tree. To prevent harm to the root system, it’s important to avoid disturbing the soil around the tree.

Root Suckers:

A common feature of the crepe myrtle tree root system is the production of root suckers. These are new shoots that emerge from the root system, often resulting in new growth around the tree’s base.

Effect on Nearby Plants:

Due to the extensive spread of the roots, crepe myrtle trees can sometimes outcompete nearby plants for nutrients and water, especially in crowded garden spaces.

Recent Research:

Recent studies on crepe myrtle trees have focused on the growth and spread of their root systems, particularly in urban environments. Research suggests that the root system can help mitigate soil erosion, making it valuable for landscaping purposes.

Will a Crepe Myrtle Stain a Driveway or A Car?

You should be aware that they can be messy. Crepe Myrtles shed their blossoms and leaves throughout the year, which can create a lot of cleanup. If the petals fall onto your car, you will be stuck with an icky brown outline that’s a real pain to get off.

So prepare to deal with many fallen petals after planting a Crepe Myrtle next to a driveway, deck, porch, or sidewalk. Occasionally, debris from your Crepe Myrtle can stain your car if you don’t clean it immediately.

So, Crepe Myrtle is not the best choice if you’re looking for a low-maintenance tree.

What Are the Potential Damage to Homes and Structures?

Most of my new readers have concerns about the potential to damage foundations and structures by Crepe Myrtles. From my observation, the fibrous roots exert enough force to crack or break concrete foundations. They can cause indirect damage by uplifting sidewalks, creating cracks, and introducing moisture.

Uplifting Sidewalks and Walkways: As roots expand, they can exert upward pressure, potentially lifting sidewalks and walkways, especially those close to the tree.
Creating Cracks and Fissures: Root growth can lead to cracks and fissures in foundations, particularly if the soil is dry and shrinks.
Introducing Moisture and Pests: Roots can attract moisture, potentially leading to dampness and mold growth near foundations. Roots can also make a pathway for termites to enter the home.

Will Crepe Myrtle Roots Damage Pipes or Foundations?

Crepe Myrtles have shallow, fibrous root systems that are unlikely to cause problems. People often plant them near sidewalks and driveways because their roots don’t threaten these structures.

Crepe Myrtles are safe to plant near your home. But remember that it’s always a good idea to plant any tree at least 10-15 feet away from your pipes and fittings to be safe. Crepe Myrtles also don’t have large taproots that can break pipes or sewer lines.

If there is already damage to a pipe, roots can grow into the opening and cause a clog. So it’s important to keep your pipes in good repair. Just give them a little space and enjoy their beauty!

How to Maintain Proper Distance from Your Home for Crepe Myrtles?

I guess you want to minimize the risk of damage. To do that, always plant Crepe Myrtles at an appropriate distance from your home. A general rule of thumb is planting the tree at least 10-15 feet from the foundation. For larger varieties, consider a distance of 20 feet or more.

Key Considerations

Size and Growth: Crepe Myrtles can range from 3 to 30 feet tall. Choose a variety that suits your space. Smaller varieties (like Tonto or Pocomoke) are ideal for smaller areas.
Root System: With a shallow root system, Crepe Myrtle can damage nearby foundations or sidewalks if planted too close. Plant it at least 3 to 4 feet away from structures.
Watering Needs: While drought-tolerant, Crepe Myrtle needs proper watering during its early years. Be mindful of irrigation, especially if planting near hardscapes.
Pruning: Regular pruning keeps the tree healthy, but avoid over-pruning (“Crepe Murder”), which can damage the tree’s structure.

Planting Crepe Myrtle near your house adds color, privacy, and wildlife benefits. Considering its size, root system, and care requirements, you can ensure it thrives and enhances your landscape for years.

How to Address Root Intrusion and Damage of Crepe Myrtles?

Three options are available for you after the Crepe Myrtles invade your structure.

Root Pruning: A professional arborist can carefully prune the roots that are causing damage, minimizing further intrusion.

Root Barriers: Installing root barriers, such as physical barriers or chemical deterrents, can prevent future root growth towards the foundation.

Foundation Repair: If roots have caused cracks or damage, repairs may be necessary to restore structural integrity.

How to Prevent Root Problems with Proper Planting and Care?

When I used to clear up my premise, I took proactive measures to significantly reduce the risk of Crepe Myrtle root problems. Eventually, the Myrtles did not overgrow and harmed any of my utilities. Now, I will share how to plant accurately for better treatment.

Choose The Right Variety: Select a Crepe Myrtle variety with a moderate growth rate and root system.
Plant in The Right Location: Plant the tree away from your home, walkways, and underground pipelines. Crepe Myrtles prefer full sun, so plant them in an area with 6 hours of direct sunlight daily. Also, plant them in wet-free spots.
Provide Proper Watering: How long did you water your last Crepe Myrtles? Fresh Crepe Myrtles should be watered deeply once a week. Once lived, you can water them infrequently. But they should still receive at least one inch of water per week.
Regular Pruning: Prune the tree regularly to prevent branches from grabbing against structures. Crepe myrtles are naturally attractive shrubs, so they don’t require a lot of pruning. So, you just need to remove the dead, diseased, or damaged branches.
Fertilize Once a Year: Crepe Myrtles benefit from annual fertilization. Use a high-nitrogen fertilizer in the spring, just after the leaves have emerged.

Where Not to Plant Crepe Myrtles at Your Home?

When I planted my first crepe myrtles, I made a mistake. I planted it near every attractive spot in my home yard, such as windows, foundation walls, and driveways! Guess what? It invaded my life and home both! So I have made a list you should not plant those beautiful evils in your home!

1. Near Windows

Crepe myrtles can grow large, so planting them too close to windows can block natural light and obstruct your view. However, you can plant the smaller varieties to make doors and windows safer.

2. Near Roof Overhangs

Crepe myrtles are a potential threat to damage to shingles and gutters. I saw falling flowers can also clog gutters, making maintenance more difficult. So keep Crepe Myrtles at least 10 feet away from roof overhangs to avoid these issues.

3. Foundation Walls

The Crepe Myrtles can encourage moisture buildup and attract pests near your home. So, how do you make your home safe? Just maintain a distance of 10-15 feet from the home’s foundation.

4. Porches and Decks

The falling flowers and leaves make porches and decks messy. You will need frequent sweeping or blowing. Choose a different planting location for crepe myrtles to keep these areas clean and inviting.

5. Near Driveways

Crepe myrtles can drop flowers, leaves, and even small branches onto driveways, making them slippery and unsightly. To maintain a neat driveway, avoid planting Crepe Myrtles nearby.

6. Next to Pool

Some Crepe Myrtle varieties, such as ‘Natchez,’ can bloom up to 100 days a year. So, you could be dealing with a constant influx of fallen flowers into your pool for almost a third of the year. And if that’s not enough, Crepe Myrtles also shed their leaves for at least 30 days in late summer and fall!

Conclusion

I have told you many things for today in a blog! Let it remain for some other day! Long text short, the Crepe Myrtles pose a potential risk to foundations and structures. But you can significantly reduce the damage through careful planting, proper care, and timely intervention if necessary.

Just follow how to prevent root problems, where not to plant Crepe Myrtles, and the potential damages for effective gardening. This way, your home will be a safe place for both plants and properties!

FAQs

Is Crepe Myrtle Poisonous to Humans?

Crepe Myrtles are generally safe for humans and pets. All parts, such as leaves, flowers, berries, and seed pods, are non-toxic and do not pose any serious health risks after ingestion. But, it’s important to exercise caution and avoid excessive consumption. Overeating, even non-toxic plants, can lead to mild stomach discomfort.

Can I Plant Crepe Myrtle Close to The House?

Yes. You can plant crepe myrtles close to your house. Plant large crepe myrtles at least 6 feet away from your house. Then, medium crepe myrtles can be planted 6-10 feet apart, and standard crepe myrtles are 8-12 feet apart. This will ensure the trees have enough room to reach their full size without rubbing against your house or damaging your siding.

Do crepe myrtles have deep roots?

No, crepe myrtles do not have deep roots. They have a shallow, fibrous root system extending 2 to 3 feet into the soil. Their roots spread horizontally, helping the tree absorb water and nutrients from a wide area.

How Long Do Crepe Myrtles Live?

The average lifespan hovers around 25 years. But some crepe myrtle Methuselahs have been known to please gardeners for centuries! The key to their longevity is sunshine, well-drained soil, and a healthy dose of minerals. If you provide your crepe myrtle no overwatering, they will live for long.

What Is the Best Crepe Myrtle Tree?

For a small yard, consider the Catawba, Pink Velour, or Black Diamond series of crepe myrtles ideal for hedges or borders. If you’re seeking a striking focal point, choose from larger crepe myrtle varieties like Dynamite, purple Muskogee, Natchez, or the cold-hardy Red Rocket.