Crepe myrtle’s stunning blooms and adaptability make it a popular choice for gardens and landscapes. However, when it becomes overgrown or uncontrollable, it can be challenging to eliminate this tenacious plant. Crepe myrtle possesses an extensive root system and readily sprouts new shoots, making eradication a formidable task. If you find yourself battling this invasive beauty, know that vanquishing it requires a multifaceted approach, combining chemical treatments, diligent labor, and strategic patience.
Chemical herbicide applications offer an effective means to curb crepe myrtle’s relentless growth. Triclopyr, a systemic herbicide, acts by penetrating the plant’s leaves and traveling through its vascular system to the root system, targeting the plant’s cellular growth processes. However, judicious application is paramount, as this herbicide’s non-selective nature can potentially harm other neighboring plants. Careful application techniques, such as using a paintbrush to target specific areas or injecting the herbicide into the stump, can minimize collateral damage to desirable species.
While chemical control proves efficient in curbing the spread of crepe myrtle, manual labor also plays a crucial role in achieving lasting eradication. Cutting back the crepe myrtle to ground level and removing all suckers and sprouts that emerge subsequently is essential. This persistent effort depletes the plant’s energy reserves, weakening its resilience. Additionally, girdling the trunk, a technique involving removing a ring of bark around the tree, can disrupt the flow of nutrients to the root system, eventually causing the plant’s demise. Patience is a virtue in this endeavor, as multiple treatments and consistent monitoring are often necessary to achieve complete eradication.
Identify Crepe Myrtle
Crepe myrtle is a deciduous shrub or small tree that is native to China and Korea. It is a popular ornamental plant, grown for its attractive flowers and colorful foliage. Crepe myrtle is relatively easy to identify, with its smooth, gray bark, oppositely arranged leaves, and showy flowers. The individual flowers are small and white, but are borne in large clusters, giving the plant a distinctive, crepe-like appearance. Crepe myrtle blooms from summer to fall, and the flowers are a popular source of nectar for bees and butterflies.
The leaves of crepe myrtle are simple and oval-shaped, with a smooth margin and a pointed tip. They are arranged oppositely on the stems, and are a medium to dark green color. In the fall, the leaves turn a brilliant red, orange, or yellow, before dropping from the plant. The bark of crepe myrtle is smooth and gray, and exfoliates in thin strips as the plant ages. The branches are often twisted and gnarled, giving the plant a distinctive character.
The following table summarizes the key identifying features of crepe myrtle:
| Feature | Description |
|---|---|
| Bark | Smooth, gray, exfoliating in thin strips |
| Leaves | Simple, oval-shaped, with a smooth margin and a pointed tip, oppositely arranged, medium to dark green, turning red, orange, or yellow in the fall |
| Flowers | Small, white, borne in large clusters, giving the plant a distinctive, crepe-like appearance, blooming from summer to fall |
| Habit | Deciduous shrub or small tree, with twisted and gnarled branches |
Prune Crepe Myrtle
Pruning crepe myrtles is a necessary part of their care and maintenance. Pruning can help to control the size and shape of the tree, promote flowering, and remove dead or diseased branches.
Pruning crepe myrtles in the spring is the best time to prune crepe myrtles. This is when the trees are dormant and before new growth begins. To prune a crepe myrtle, first remove any dead or diseased branches. Next, prune any branches that are crossing or rubbing against each other. Finally, prune any branches that are growing out of the desired shape of the tree.
When pruning crepe myrtles, it is important to make clean cuts with sharp pruning shears. Avoid pruning too much at one time, as this can shock the tree. It is also important to avoid pruning too close to the trunk of the tree, as this can create a wound that can be susceptible to disease.
Types of pruning shears
| Type of pruning shears | Description |
|---|---|
| Anvil pruning shears | Anvil pruning shears have a sharp blade that cuts against a flat surface, or anvil. They are best suited for pruning small branches. |
| Bypass pruning shears | Bypass pruning shears have two blades that pass by each other, like scissors. They are best suited for pruning larger branches. |
Fertilize Crepe Myrtle
Fertilizing your crepe myrtle is essential for maintaining its health and promoting vibrant blooms. Here’s a comprehensive guide to fertilizing crepe myrtles:
When to Fertilize:
The best time to fertilize crepe myrtles is between late winter and early spring, before new growth emerges. Avoid fertilizing in the fall or winter, as it can encourage tender growth that’s susceptible to frost damage.
What Type of Fertilizer to Use:
Choose a balanced, slow-release fertilizer with a ratio such as 10-10-10 or 12-12-12. These fertilizers provide a gradual release of nutrients, which is ideal for crepe myrtles’ steady growth habits.
How to Apply Fertilizer:
1. Broadcast Application: Evenly distribute the fertilizer around the base of the tree, keeping it a few inches away from the trunk.
2. In-Hole Application: Dig holes around the drip line of the tree, 6-8 inches deep and 12-18 inches apart. Place the fertilizer in the holes and cover them with soil.
3. Liquid Fertilization: Dilute liquid fertilizer according to package instructions and apply it directly to the soil around the tree. Avoid getting fertilizer on the leaves or bark.
Frequency of Fertilization:
Fertilize crepe myrtles once a year during the recommended time frame. Do not over-fertilize, as this can damage the plant and burn the roots.
Tips for Fertilizing Crepe Myrtles:
| Tip | Description |
|---|---|
| Water after fertilizing | Water the soil deeply after applying fertilizer to help incorporate it into the root zone. |
| Avoid using nitrogen-heavy fertilizers | Excess nitrogen can promote excessive leafy growth and reduce flowering. |
| Test the soil | Conduct a soil test to determine the specific nutrient needs of your crepe myrtle before fertilizing. |
Water Crepe Myrtle
Water crepe myrtle (Lagerstroemia indica) is a beautiful flowering tree that is native to China. It is a popular choice for landscaping because of its showy flowers and attractive bark. However, water crepe myrtle can also be invasive, and it can be difficult to get rid of it once it has established itself in an area.
Methods
There are a few different methods that you can use to get rid of water crepe myrtle. The most effective method is to use a combination of methods.
- Mechanical removal: This involves digging up the tree and removing the roots. This is the most effective method, but it can be difficult and time-consuming.
- Chemical control: This involves using herbicides to kill the tree. This is a less effective method than mechanical removal, but it is easier and less time-consuming.
- Biological control: This involves using insects or other organisms to kill the tree. This is a relatively new method, and it is not yet widely used.
- Water deprivation: Water crepe myrtle is a thirsty tree, and it will die if it does not get enough water. You can try to get rid of water crepe myrtle by depriving it of water. This can be done by digging a trench around the tree and filling it with gravel. The gravel will prevent water from reaching the tree’s roots.
The best way to get rid of water crepe myrtle is to use a combination of methods. For example, you can start by digging up the tree and removing the roots. Then, you can apply herbicide to the stump and the surrounding area. This will help to prevent the tree from resprouting.
If you are having trouble getting rid of water crepe myrtle on your own, you can contact a professional landscaper or arborist for help.
Mulch Crepe Myrtle
Mulching around crepe myrtle trees is an effective way to control weeds, retain moisture in the soil, and regulate soil temperature. The ideal mulch for crepe myrtle trees is organic matter such as shredded bark, compost, or pine needles. Here’s how to mulch your crepe myrtle tree:
- Remove any existing weeds or debris from the base of the tree.
- Spread a 2-3 inch layer of mulch around the tree, keeping it away from the trunk.
- Extend the mulch out to the drip line of the tree, which is the area beneath the outer edge of the canopy.
- Avoid piling mulch directly against the trunk, as this can promote rot.
- Replenish the mulch layer as needed, especially after heavy rains or when the mulch has decomposed.
Benefits of Mulching Crepe Myrtle
Mulching crepe myrtle trees offers numerous benefits, including:
| Benefit | Explanation |
|---|---|
| Weed suppression | Prevents weeds from competing with the tree for water and nutrients. |
| Soil moisture retention | Helps the soil retain moisture, reducing the need for watering. |
| Soil temperature regulation | Keeps the soil temperature cool in summer and warm in winter, protecting the tree’s roots. |
| Nutrient enrichment | As the mulch decomposes, it adds organic matter and nutrients to the soil. |
| Improved aesthetics | Enhances the appearance of the tree and landscape. |
Control Pests and Diseases
Aphids
Aphids are small, soft-bodied insects that can infest crepe myrtles. They feed on the plant’s sap, causing leaves to turn yellow and drop prematurely. Aphids can be controlled by applying an insecticidal soap spray or by releasing ladybugs, which prey on aphids.
Scale
Scale is a type of insect that attaches itself to the bark of crepe myrtles and feeds on the plant’s sap. Scale can cause the bark to become discoloured and cracked, and can eventually lead to the death of the plant. Scale can be controlled by applying a horticultural oil spray or by using a systemic insecticide.
Powdery Mildew
Powdery mildew is a fungal disease that can infect crepe myrtles. Powdery mildew causes a white powdery coating to form on the leaves of the plant. Powdery mildew can be controlled by applying a fungicide or by using a sulfur spray.
Leaf Spot
Leaf spot is a fungal disease that can infect crepe myrtles. Leaf spot causes small, brown spots to form on the leaves of the plant. Leaf spot can be controlled by applying a fungicide or by using a copper spray.
Botrytis Blight
Botrytis blight is a fungal disease that can infect crepe myrtles. Botrytis blight causes the flowers and leaves of the plant to turn brown and wilt. Botrytis blight can be controlled by applying a fungicide or by removing infected plant material.
Table of Fungicides and Insecticides for Crepe Myrtle Pests and Diseases
| Pest/Disease | Product |
|---|---|
| Aphids | Insecticidal soap spray, ladybugs |
| Scale | Horticultural oil spray, systemic insecticide |
| Powdery mildew | Fungicide, sulfur spray |
| Leaf spot | Fungicide, copper spray |
| Botrytis blight | Fungicide |
Provide Adequate Sunlight
Crepe myrtles (Lagerstroemia spp.) are sun-loving trees or shrubs that need at least six hours of direct sunlight per day to thrive. In shady conditions, they will produce fewer blooms and may become leggy and weak. If your crepe myrtle is not getting enough sunlight, here are some tips for providing it with more:
- Trim back any trees or shrubs that are blocking the sunlight.
- Thin out the canopy of the crepe myrtle to allow more light to penetrate.
- Transplant the crepe myrtle to a sunnier location.
In addition to providing adequate sunlight, crepe myrtles also need well-drained soil, regular watering, and occasional fertilization. By following these care tips, you can help your crepe myrtle thrive and produce beautiful blooms for years to come.
| Sunlight Requirements | Crepe Myrtle Response |
|---|---|
| Less than 6 hours of direct sunlight per day | Fewer blooms, leggy growth, weak stems |
| 6 or more hours of direct sunlight per day | Abundant blooms, strong growth, healthy stems |
Inspect Regularly
Regular inspection is crucial in detecting crepe myrtle sprouts early on. Young sprouts are easier to remove than established saplings. Conduct thorough inspections of your yard, particularly in areas where crepe myrtles were previously present or where there is potential for seed dispersal by birds or wind.
Early Detection Techniques
To effectively detect crepe myrtle sprouts, pay attention to the following indicators:
- Ground cover: Examine areas with dense vegetation for signs of sprouts emerging through the soil.
- Mulch: Check mulch beds and flower pots for any unusual growth or disturbances, as these may indicate sprouting seedlings.
- Cracks and crevices: Inspect cracks in sidewalks, driveways, or the foundation of buildings for potential sprout locations.
- Bare patches: Pay attention to bare or disturbed areas in your yard, as these may provide a suitable environment for crepe myrtle seed germination.
- New foliage: Be vigilant for any unexpected or out-of-season foliage that may indicate a sprouting crepe myrtle.
Frequency of Inspection
The frequency of inspection will depend on the specific conditions of your yard and the extent of previous crepe myrtle presence. However, it is generally recommended to conduct inspections at least once per month during the growing season (spring, summer, and fall). More frequent inspections may be necessary in areas with a high risk of sprout growth or if crepe myrtle trees are known to be nearby.
Recommended Inspection Schedule
| Month | Inspection Frequency |
|---|---|
| March-April | Weekly |
| May-July | Bi-weekly |
| August-September | Monthly |
| October-November | Bi-weekly |
| December-February | Monthly |
Avoid Over-Watering
Crepe myrtles are relatively drought-tolerant plants. Overwatering can make them more susceptible to pests and diseases. Allow the soil to dry out slightly between waterings. During hot, dry weather, you may need to water more often, but avoid overwatering.
Here are some tips for avoiding overwatering:
- Check the soil moisture before watering. Stick your finger in the soil to a depth of 2-3 inches. If the soil is moist, wait to water.
- Water deeply and infrequently. When you do water, water the plant thoroughly until the water runs through the drainage holes in the bottom of the pot. Then, allow the soil to dry out slightly before watering again.
- Use a soaker hose or drip irrigation system. This will help to deliver water directly to the roots of the plant, where it is needed most.
The following table provides a general guideline for watering crepe myrtles:
| Soil Type | Watering Frequency |
|---|---|
| Sandy soil | Water every 7-10 days |
| Loam soil | Water every 10-14 days |
| Clay soil | Water every 14-21 days |
Keep in mind that these are just general guidelines. The actual watering frequency will vary depending on the weather conditions and the size of the plant.
Choose a Sunny Location
Crepe myrtles thrive in full sun to partial shade. Choose a spot in your yard that gets at least six hours of sunlight per day. If you live in a hot climate, provide some afternoon shade to protect the leaves from scorching.
Amend the Soil
Crepe myrtles prefer well-drained, slightly acidic soil. Amend the soil with organic matter, such as compost or peat moss, to improve drainage and fertility. The ideal soil pH for crepe myrtles is between 5.5 and 6.5.
Plant Deeply
When planting a crepe myrtle, dig a hole that is twice as wide as the root ball and just as deep. Place the tree in the hole and backfill with soil, tamping down gently to remove any air pockets. Water the tree thoroughly after planting.
Mulch Around the Base
Mulch around the base of the tree with a layer of organic matter, such as wood chips or bark. Mulch helps to retain moisture, suppress weeds, and regulate soil temperature.
Water Regularly
Water crepe myrtles regularly, especially during the first growing season. Allow the soil to dry out slightly between waterings. Avoid overwatering, as this can lead to root rot.
Fertilize Annually
Fertilize crepe myrtles annually in the spring with a balanced fertilizer. Follow the instructions on the fertilizer label for the correct application rate.
Prune Selectively
Prune crepe myrtles in late winter or early spring before new growth begins. Remove dead or diseased branches, and thin out the canopy to allow for better air circulation and sunlight penetration.
Deadhead Spent Blooms
Deadhead spent blooms to encourage new flower production. Simply remove the faded flowers from the stems.
Control Pests and Diseases
Crepe myrtles are generally pest-resistant, but they can be susceptible to aphids, scale, and powdery mildew. Monitor your trees for signs of pests or diseases and treat accordingly.
Seek Professional Help if Necessary
If you are unable to control crepe myrtle on your own, or if the infestation is severe, you may need to seek professional help. A certified arborist or pest control company can assess the situation and recommend the best course of action.
How To Get Rid Of Crepe Myrtle
Crepe myrtles are beautiful trees that can add a touch of elegance to any landscape. However, they can also be quite invasive, and if you’re not careful, they can quickly take over your yard. If you’re looking for a way to get rid of crepe myrtles, there are a few different methods you can try.
One of the most effective ways to get rid of crepe myrtles is to cut them down. However, it’s important to note that this method will only work if you’re able to remove the entire root system. If you don’t remove the entire root system, the tree will simply grow back. To cut down a crepe myrtle, you’ll need a sharp saw and a pair of loppers. First, use the saw to cut through the trunk of the tree. Once the trunk has been cut through, use the loppers to remove the branches.
Another way to get rid of crepe myrtles is to use herbicides. Herbicides are chemicals that can kill plants. To use herbicides to get rid of crepe myrtles, you’ll need to apply the herbicide to the leaves of the tree. Be sure to follow the instructions on the herbicide label carefully. Herbicides can be dangerous, so it’s important to take precautions when using them.
If you’re not comfortable using herbicides, you can also try to get rid of crepe myrtles by digging them up. To dig up a crepe myrtle, you’ll need a shovel and a pair of gloves. First, dig a trench around the tree, about 12 inches deep and 12 inches wide. Once you’ve dug the trench, use the shovel to loosen the soil around the roots of the tree. Once the roots have been loosened, you can pull the tree out of the ground.
People Also Ask About How To Get Rid Of Crepe Myrtle
How do I identify a crepe myrtle?
Crepe myrtles are deciduous trees that typically grow to be between 15 and 30 feet tall. They have smooth, gray bark and ovate leaves that are 3 to 5 inches long. The flowers of crepe myrtles are typically pink, purple, or white, and they bloom in the summer.
What are the benefits of planting a crepe myrtle?
Crepe myrtles are beautiful trees that can add a touch of elegance to any landscape. They are also relatively low-maintenance trees, and they can tolerate a variety of soil conditions. Crepe myrtles are also drought-tolerant, which makes them a good choice for areas that experience hot, dry summers.
What are the risks of planting a crepe myrtle?
Crepe myrtles can be invasive, and if they are not properly controlled, they can quickly take over a yard. Crepe myrtles can also produce a lot of suckers, which can be a nuisance. Additionally, crepe myrtles are susceptible to a number of pests and diseases, including aphids, scale, and powdery mildew.
