Identify the Type of Crepe Myrtle
Crepe myrtles, native to Southeast Asia, are popular ornamental shrubs and trees widely cultivated in warm climates worldwide. They are known for their beautiful, crinkled flowers and colorful foliage. However, they can become invasive in some areas, so identifying the type of crepe myrtle you’re dealing with is crucial for effective control.
Determining the Species
Crepe myrtles belong to the genus Lagerstroemia. There are several species in the genus, each with distinct characteristics:
Common Crepe Myrtle (Lagerstroemia indica):
- Small tree or shrub reaching 15-25 feet tall
- Flowers range from white to deep pink or purple
- Blooms in summer and early fall
- Bark is smooth and gray
Crape Myrtle (Lagerstroemia speciosa):
- Large tree reaching 40-50 feet tall
- Flowers are usually white or pink
- Blooms in late spring and early summer
- Bark is reddish-brown and scaly
Muskogee Crape Myrtle (Lagerstroemia indica x Lagerstroemia fauriei):
- Small- to medium-sized tree reaching 20-30 feet tall
- Flowers are light pink or rose
- Blooms in midsummer
- Bark is smooth and gray
Identifying Hybrids
Many crepe myrtle varieties are hybrids, combining characteristics from different species. These hybrids may exhibit a range of flower colors, bloom times, and heights. If you are unable to identify a crepe myrtle to a specific species, it is likely a hybrid.
Other Considerations
In addition to species and hybrid identification, it’s helpful to consider the following factors:
- Age: Older trees and shrubs are more difficult to remove.
- Size: Larger trees require more effort and equipment to remove.
- Location: Crepe myrtles growing in dense vegetation or near structures may require special care when removing.
Choose the Appropriate Pruning Tools
Pruning shears: These are small, handheld tools with sharp blades that are ideal for cutting branches up to 1/2 inch in diameter. Look for shears with comfortable grips and sharp blades that can be easily sharpened.
Loppers: Loppers are larger than pruning shears and are used for cutting branches that are too thick for pruning shears but too thin for a saw. They have long handles and sharp blades that can cut branches up to 1 1/2 inches in diameter.
Hand saw: A hand saw is a versatile tool that can be used to cut branches of all sizes. Choose a saw with a sharp blade and a comfortable grip.
Pole saw: A pole saw is a long-handled saw that is used to reach high branches. It has a sharp blade on the end of a long pole and can be used to cut branches up to 6 inches in diameter.
Chainsaw: A chainsaw is a powerful tool that is used to cut large branches or trunks. It has a sharp chain on the end of a long bar and can be used to cut branches up to 12 inches in diameter.
| Tool | Recommended for cutting branches up to: |
|---|---|
| Pruning shears | 1/2 inch |
| Loppers | 1 1/2 inches |
| Hand saw | All sizes |
| Pole saw | 6 inches |
| Chainsaw | 12 inches |
When choosing pruning tools, it is important to consider the size of the branches that you will be cutting, the height of the branches, and the amount of force that you will need to apply. It is also important to choose tools that are comfortable to use and that are made of high-quality materials.
Remove Water Sprouts and Suckers
Crepe myrtles are prone to developing water sprouts and suckers. Water sprouts are long, thin stems that grow from the base of the tree or from dormant buds on the trunk or branches. Suckers are shoots that grow from the roots of the tree.
Both water sprouts and suckers can be unsightly and can compete with the main trunk and branches for water and nutrients. They can also make it difficult to mow and trim the tree.
To remove water sprouts, simply prune them off at the base of the tree. To remove suckers, you will need to dig them up and remove them from the root system. It is important to remove all of the roots of the sucker, or it will continue to grow back.
Here are some tips for removing water sprouts and suckers:
| Water Sprouts | Suckers |
|---|---|
| Prune at the base of the tree. | Dig up and remove all of the roots. |
| Do not leave any stubs. | Remove as soon as possible to prevent them from becoming established. |
| Monitor the tree regularly for new growth. | If suckers recur, dig them up and remove them again. |
Shape the Crepe Myrtle
In order to shape your crepe myrtle, you must first remove the dead and diseased branches. Once this is done, you can start to shape the tree. If you want the tree to be more compact, you should prune the branches back to the main trunk. If you want the tree to grow taller, you should prune the branches back to a side branch. You should also remove any branches that are crossing or rubbing against each other.
When pruning the crepe myrtle, it is important to remember that it is a deciduous tree. This means that it will lose its leaves in the fall. As such, you should prune the tree in the late winter or early spring, before the new leaves start to grow.
There are three main ways to shape a crepe myrtle:
| Method | Description |
|---|---|
| Single-trunk | This method involves removing all of the branches from the tree except for one. The single trunk is then trained to grow straight up. |
| Multi-trunk | This method involves allowing the tree to grow multiple trunks. The trunks are then pruned to create a desired shape. |
| Espalier | This method involves training the tree to grow flat against a wall or fence. The branches are pruned to create a desired shape. |
The method you choose will depend on your personal preference and the desired shape of the tree.
Remove Diseased or Dead Branches
Crepe myrtle trees are susceptible to a variety of diseases and pests, which can cause branches to become diseased or dead. These branches should be removed as soon as possible to prevent the spread of infection or infestation to other parts of the tree. To remove diseased or dead branches:
Step 1: Identify Diseased or Dead Branches
Diseased branches may exhibit signs of discoloration, wilting, or lesions. Dead branches will be brittle and may have no foliage.
Step 2: Gather Tools
You will need sharp pruning shears or a pruning saw, depending on the thickness of the branches.
Step 3: Make Safety Cuts
Make a small cut on the underside of the branch about 6 inches from the trunk. This will help prevent the branch from tearing the bark when it is removed.
Step 4: Remove Branch
Cut through the branch at the point where you made the safety cut.
Step 5: Clean Tools
After removing all diseased or dead branches, disinfect your pruning tools with a bleach solution to prevent the spread of disease or pests.
Step 6: Proper Disposal
Diseased or dead branches should be disposed of properly to prevent the spread of infection or infestation. Burn or bury the branches away from the tree.
Step 7: Apply Pruning Sealant
For larger cuts, apply a pruning sealant to the exposed surface of the trunk to prevent moisture and insects from entering the tree.
Step 8: Follow-Up Care
After removing diseased or dead branches, it is important to provide proper care to the tree to promote its health and vigor. This includes regular watering, fertilization, and pest control.
| Pruning Tools | Uses |
|---|---|
| Pruning Shears | Branches up to 1/2 inch in diameter |
| Pruning Saw | Branches larger than 1/2 inch in diameter |
Fertilize Properly
Crepe myrtles benefit from regular fertilization to promote healthy growth and abundant blooms. Fertilize your crepe myrtle in early spring and again in mid-summer. Use a balanced fertilizer with an N-P-K ratio of 10-10-10 or 12-12-12. Follow the manufacturer’s instructions for application rates and timing.
Water Regularly
Crepe myrtles are drought-tolerant but will produce more blooms and foliage with regular watering. Water your crepe myrtle deeply, especially during hot, dry weather. Allow the soil to dry out slightly between waterings to prevent root rot.
Prune Correctly
Pruning is essential for maintaining the health and appearance of crepe myrtles. Prune your crepe myrtle in late winter or early spring, before new growth begins. Remove any dead, diseased, or crossing branches. Cut back branches that are rubbing against each other to prevent damage and disease. Also, remove any suckers that may grow from the base of the tree.
Control Pests and Diseases
Crepe myrtles are susceptible to a few pests and diseases, including aphids, scale, and powdery mildew. Monitor your crepe myrtle regularly for signs of these problems. Treat infestations promptly with appropriate insecticides or fungicides according to the manufacturer’s instructions.
Protect from Cold
Crepe myrtles are not cold-hardy in all climates. If you live in an area with cold winters, you may need to protect your crepe myrtle from frost and freezing temperatures. Wrap the base of the tree with a layer of mulch or burlap to insulate the roots. You can also cover the entire tree with a frost blanket or tarp to protect the foliage.
Provide Support
Crepe myrtles with large, heavy blooms may need support to prevent the branches from breaking. Install stakes or supports around the tree to provide stability and prevent damage.
Enjoy Abundant Blooms
With proper care, crepe myrtles will produce an abundance of beautiful blooms. Deadhead spent flowers to encourage new blooms and maintain a tidy appearance.
Transplant Carefully
If you need to transplant your crepe myrtle, do so in early spring or fall when the tree is dormant. Dig a hole 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 deeply after planting.
