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Purely Purple™ Crape Myrtle

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  • Striking Dark Foliage: The Purely Purple™ variety of Crape Myrtle boasts nearly black leaves, setting a dramatic backdrop for its vivid purple blooms, making it a unique specimen in the garden world.
  • Heat and Drought Resistant: Perfectly designed by nature for warmer climates, this Crape Myrtle is both heat and drought-tolerant, ensuring resilience during the hottest summer months.
  • Mildew Resistant: Unlike many other Crape Myrtles, the Black Diamond® Purely Purple™ stands out for its resistance to powdery mildew, ensuring healthier foliage and less maintenance.

More Details

Black Diamond® Purely Purple™ Crape Myrtle, scientifically known as Lagerstroemia Black diamond 'Purely Purple', is a mesmerizing deciduous tree that stands out in any landscape with its deep purple blooms. This plant is cherished for its contrasting near-black foliage and vibrant purple flowers, making it a modern favorite among garden enthusiasts. With its adaptability, the Purely Purple™ Crape Myrtle promises extended flowering seasons and is the ideal choice for those aiming to introduce a dramatic flair to their garden or yard.

Growth rate: Moderate growth rate, reaching up to 10-12 feet in height and 6-8 feet in width when mature.

Please note: Images on our website depict plants and trees at full maturity to showcase their expected grown characteristics. These images are illustrative examples only and do not represent the size of plants or trees upon delivery.

Pruning: For best flowering results, prune in late winter or early spring. Remove any crossed or inward-growing branches to encourage an open canopy and enhance airflow.

Fertilization: Apply a balanced, slow-release fertilizer in early spring to support vibrant blooms and healthy growth.

Winter Protection: While fairly cold-hardy, in the cooler end of its zone range, consider mulching around the base to provide extra protection against frost.


Select a location that receives full sun. Prepare the soil by ensuring it is well-draining. Dig a hole twice the width of the plant's root ball and the same depth. Place the Crape Myrtle into the hole, ensuring it's level with the ground. Fill the hole with soil, press down gently, and water thoroughly. Apply a layer of mulch around the base to conserve moisture and reduce weed competition. Ensure proper spacing between multiple plants to provide good air circulation.





Black Diamond® Purely Purple™ Crape Myrtle craves full sun, basking in at least six hours of direct sunlight each day to produce its vibrant blooms. Watering is essential, especially in its early growth stages. Water deeply once a week, ensuring the soil remains moist but not soggy. During extremely hot periods, consider increasing the watering frequency.

We process and ship your order as quickly as possible, typically within 1-3 business days. You will receive a shipping confirmation with tracking information once your item(s) ship.

We have perfected packaging and shipping plants & trees! That is why we DO NOT use any third-party fulfillment like most other online retailers. Your trees go straight from our farm to your door, safely packaged by our team of seasoned professionals. Our process ensures your plants leave our facility and arrive to your door in the best condition possible!

In cases of extreme cold or hot weather, we may temporarily delay shipping to ensure the well-being of your plants. Our primary focus is on delivering healthy and thriving plants to you. Rest assured, we'll make every effort to notify you of any delays promptly.

Please allow additional ship times during inclement weather and sale periods. We do not process or ship orders on the weekend or U.S. Holidays. Simply Trees is not responsible for delays due to carriers, local disruptions, or weather.

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At Simply Trees, we're committed to your satisfaction. If your plants arrive considerably damaged or sustained damage beyond the point of recovery, please contact us within five days at sales@simplytrees.store with clear photos for assistance. Our 30-day guarantee covers issues after planting, subject to our terms and conditions. We can't cover plants in the wrong climate or with inadequate care, but we're here to help in other situations. For a detailed understanding of our 30-day guarantee and how we ensure a fair process, click here to learn more.

USDA GROW ZONE:

Zones 7-10

Black Diamond® Purely Purple™ Crape Myrtle flourishes best in USDA grow zones 7-10. These zones experience milder winters and hot summers. The plant's heat and drought tolerance, combined with its adaptability, make it a perfect fit for these areas where it can showcase its full bloom potential during the warm months.

Frequently Asked Questions

The Black Diamond Crape Myrtle cultivar 'Purely Purple' is a unique and popular selection known for its striking dark purple to black foliage and vibrant purple blooms. Here are some details about its typical size, growth rate, and time to reach maturity:

Mature Height: Black Diamond 'Purely Purple' Crape Myrtle typically reaches a mature height of approximately 10 to 12 feet. However, this can vary based on local growing conditions, pruning practices, and specific environmental factors.

Mature Width: These Crape Myrtles generally have a spread or width of about 8 to 10 feet when fully mature. Their width can also vary depending on factors such as pruning and local growing conditions.

Growth Rate: Black Diamond 'Purely Purple' Crape Myrtle has a moderate to fast growth rate. On average, it can grow anywhere from 1 to 3 feet in height per year under favorable conditions.

Time to Reach Maturity: It typically takes several years for Black Diamond 'Purely Purple' Crape Myrtle to reach its full mature height and width. While it may start producing significant blooms and foliage color within the first few years after planting, it can take 3 to 5 years or more to approach its full mature size. The rate of growth can be influenced by factors such as soil quality, sunlight, and local climate.

Proper care, including regular watering, fertilization, and pruning, can help your Black Diamond 'Purely Purple' Crape Myrtle reach its full potential in terms of size and visual impact. Keep in mind that while they can be pruned to maintain a specific size and shape, allowing them to grow naturally can showcase their unique foliage and maximize their bloom production.

The best time of year to plant Black Diamond Crape Myrtles or any crape myrtle variety is typically in the late winter to early spring or in the early fall. Here are some details about the best times for planting:

1. Late Winter to Early Spring (February to April):
Planting crape myrtles in late winter to early spring, just before new growth begins, is an excellent choice. This allows the plant to establish its root system before the onset of hot summer weather. By planting in late winter or early spring, you give the crape myrtle ample time to adapt to its new environment and potentially bloom in the same growing season.

2. Early Fall (September to October):
Early fall is another suitable planting time for crape myrtles, as the weather begins to cool down and there is less heat stress. Planting in early fall provides a window for root establishment before winter dormancy, allowing the plant to be well-prepared for the following spring.

While these are the optimal times for planting crape myrtles, you can also plant them during other parts of the growing season if necessary. However, avoid planting during the hot summer months when the plant may experience stress due to high temperatures and dry conditions.

When planting Black Diamond Crape Myrtles or any crape myrtle variety, follow these general planting guidelines:

Select a Suitable Location: Choose a planting site with well-draining soil and full sun to partial shade. Ensure there is enough space for the mature size of the crape myrtle.

Prepare the Soil: Amend the soil with organic matter to improve drainage and fertility. Crape myrtles thrive in slightly acidic to neutral soil.

Dig a Proper Hole: Dig a hole that is as deep as the root ball but at least two times wider. This provides ample room for the roots to spread.

Plant at the Right Depth: Set the crape myrtle in the hole so that the top of the root ball is level with the surrounding soil surface.

Backfill and Water: Fill in the hole with soil, tamp it down gently, and water thoroughly to settle the soil and eliminate air pockets.

Mulch: Apply a layer of mulch around the base of the plant to conserve moisture, regulate soil temperature, and suppress weeds.

Water Regularly: Keep the soil consistently moist, especially during the first year after planting, to help the crape myrtle establish its root system.

By planting crape myrtles at the right time of year and providing proper care, you can enjoy their beautiful blooms and attractive growth habit in your landscape.

Black Diamond Crape Myrtle 'Purely Purple' is known for its extended and impressive blooming period. These crape myrtles typically begin blooming in late spring to early summer and continue to produce vibrant purple blooms well into the late summer and early fall.

The exact duration of the bloom period for Black Diamond 'Purely Purple' can vary depending on several factors, including local climate, weather conditions, and the specific growing environment. However, in favorable conditions, you can expect Black Diamond 'Purely Purple' Crape Myrtles to bloom for approximately 90 to 120 days or even longer, which can span from late spring through the majority of the summer.

To maximize the bloom period and encourage continuous flowering, you can practice deadheading, which involves removing spent flower clusters as they fade. Deadheading helps redirect the plant's energy into producing new flower buds, extending the overall bloom duration.

Overall, Black Diamond 'Purely Purple' Crape Myrtle's extended blooming season and unique foliage color make it a stunning addition to landscapes and gardens, providing a long-lasting display of vibrant purple blooms throughout the warm months.

When planting Black Diamond Crape Myrtle 'Purely Purple', it's important to consider their mature size and allow enough spacing between individual plants to ensure they have room to grow and thrive without becoming overcrowded. Here are some general guidelines for spacing when planting Black Diamond Crape Myrtle 'Purely Purple':

Spacing for Single Trunk Trees:
If you intend to grow Black Diamond Crape Myrtle 'Purely Purple' as single trunk trees, space them approximately 8 to 12 feet apart from one another. This spacing allows for their mature canopy to develop without overcrowding.

Spacing for Multi-Trunk Shrubs:
For multi-trunk or shrub-like growth forms, you can plant them slightly closer together, typically about 6 to 10 feet apart. This spacing accommodates the development of multiple trunks while still allowing for adequate air circulation and growth.

Consider Mature Size: When determining the spacing, consider the mature width of Black Diamond Crape Myrtle 'Purely Purple,' which can reach approximately 8 to 10 feet for multi-trunk shrubs. Providing adequate space for their mature canopy helps prevent overcrowding and promotes healthy growth.

Future Pruning: Keep in mind that regular pruning may be necessary to maintain the desired shape and size of your crape myrtles, especially if they are planted in closer proximity.

Site Conditions: Ensure that the planting site receives the appropriate amount of sunlight and has well-draining soil, as these factors can influence the overall health and growth of the plants.

Aesthetics and Visibility: Consider the visual impact of your planting location. Black Diamond Crape Myrtle 'Purely Purple' is prized for its striking dark purple foliage and vibrant blooms, so choose a location where they can be prominently featured and enjoyed.

By carefully selecting the right planting site and allowing adequate spacing between individual plants, you can help ensure that your Black Diamond Crape Myrtle 'Purely Purple' grows vigorously, produces abundant blooms, and enhances the beauty of your landscape. Proper spacing also helps prevent issues like overcrowding, reduced air circulation, and potential disease problems.

Black Diamond Crape Myrtles, including 'Purely Purple', typically start blooming within the first growing season after planting, especially if they are well-established and provided with proper care. This means you can expect to see their vibrant purple blooms in the first year of growth, typically in late spring or early summer.

The ability to bloom in the first year is one of the attractive features of Black Diamond Crape Myrtles. However, the overall size and quantity of blooms may increase as the plant matures. In other words, while they can produce blooms in the first year, the plant will continue to grow and produce more prolific blooms in subsequent years.

To encourage vigorous growth and abundant flowering, it's essential to provide your Black Diamond Crape Myrtles with the right growing conditions, including full sun, well-draining soil, adequate moisture, and proper pruning when necessary. With proper care, they will continue to improve in bloom quality and quantity as they mature over the years.

The best place to plant Black Diamond Crape Myrtles, including 'Purely Purple', is in a location that provides them with the ideal growing conditions to thrive, showcase their striking dark purple foliage and vibrant purple blooms, and enhance the beauty of your landscape. Here are some key considerations for choosing the best planting site:

Sunlight: Black Diamond Crape Myrtles require full sun to thrive and produce abundant blooms and vibrant foliage color. Choose a location that receives at least 6 to 8 hours of direct sunlight each day. Insufficient sunlight can result in reduced flowering and less intense foliage color.

Soil Quality: Select well-draining soil with good fertility. These crape myrtles prefer slightly acidic to neutral soil. Amending the soil with organic matter, such as compost, can improve soil structure and fertility.

Spacing: Ensure that you plant Black Diamond Crape Myrtles with adequate spacing between each plant to accommodate their mature canopy and prevent overcrowding. Refer to recommended spacing guidelines based on your desired growth form (single trunk or multi-trunk shrub).

Protection from Wind: While crape myrtles are generally hardy, they can benefit from some protection against strong winds, especially in regions with severe storms. Planting them near structures or windbreaks can provide some shelter.

Avoid Low-Lying Areas: Avoid planting in low-lying areas where water may accumulate, as crape myrtles prefer well-drained soil. Poor drainage can lead to root rot and other health issues.

Adequate Air Circulation: Proper air circulation around the plants helps prevent fungal diseases. Avoid planting them in extremely tight or crowded spaces.

Aesthetics and Visibility: Consider the visual impact of your planting location. Black Diamond Crape Myrtles are prized for their dark purple foliage and vibrant blooms, so choose a location where they can be prominently featured and enjoyed.

Accessibility: Ensure easy access to your crape myrtles for maintenance tasks such as pruning, deadheading, and fertilization.

Local Climate: Black Diamond Crape Myrtles are suitable for USDA Hardiness Zones 7 to 10. Be sure to select a location that matches your local climate and provides the necessary winter protection if you live near the cooler end of their range.

Companion Planting: Consider the overall design of your landscape when choosing the planting site. You can complement Black Diamond Crape Myrtles with other plants that thrive in similar conditions and create an appealing garden design.

By carefully selecting the right planting site that meets these criteria, you can help ensure that your Black Diamond Crape Myrtles grow vigorously, produce abundant blooms and striking foliage color, and contribute to the beauty of your landscape. Proper site selection is essential for their long-term health and visual impact.

If your Black Diamond Crape Myrtle is not blooming, there could be several reasons for this issue. Crape myrtles are generally known for their prolific blooms, so when they don't flower, it's essential to address the potential causes. Here are some common reasons why crape myrtles may not bloom and solutions to consider:

Insufficient Sunlight:
Crape myrtles require full sun to partial shade to produce abundant blooms. Lack of adequate sunlight can result in reduced flowering.
Solution: Ensure that your crape myrtle is planted in a location where it receives at least 6 to 8 hours of direct sunlight each day.

Pruning at the Wrong Time:
Pruning crape myrtles at the wrong time, especially in late winter or spring, can remove flower buds and inhibit blooming.
Solution: Prune your crape myrtle immediately after flowering in late spring or early summer. Avoid heavy pruning during the growing season.

Over-Pruning:
Excessive or severe pruning can remove too much growth and reduce flowering potential.
Solution: Prune crape myrtles selectively and lightly to maintain their shape, and avoid removing more than one-third of the plant's canopy at a time.

Immaturity:
Young crape myrtles may take a couple of years to establish themselves before producing abundant blooms.
Solution: Be patient and provide proper care to help the plant develop and mature.

Nutrient Deficiencies:
Nutrient imbalances, particularly a lack of phosphorus or potassium, can affect flowering.
Solution: Fertilize your crape myrtle with a balanced, slow-release fertilizer formulated for flowering shrubs in the spring. Consider a soil test to determine any specific nutrient deficiencies.

Water Stress:
Drought stress or inconsistent watering can lead to reduced flowering.
Solution: Ensure that your crape myrtle receives regular, deep watering during dry spells, especially during the growing season.

Disease or Pest Issues:
Diseases or pest infestations can weaken crape myrtles and affect their ability to bloom.
Solution: Inspect your plant for signs of disease or pests and treat as needed with appropriate control measures.

Varietal Differences:
Some crape myrtle varieties may naturally have different flowering patterns or may bloom less profusely than others.
Solution: Understand the typical flowering pattern of your specific crape myrtle variety and adjust your expectations accordingly.

Environmental Stress:
Extreme environmental conditions, such as severe cold snaps or excessive heat, can impact flowering.
Solution: Protect your crape myrtle from extreme conditions when possible and provide proper care to help it recover.

Old Age:
As crape myrtles age, they may naturally produce fewer blooms.
Solution: Consider rejuvenation pruning to stimulate new growth and flowering in older crape myrtles.

By addressing the specific issues affecting your crape myrtle and providing the appropriate care, you can encourage it to bloom and thrive in your landscape.

The frequency of watering Black Diamond Crape Myrtle 'Purely Purple' depends on various factors, including the age of the plant, local climate, soil type, and recent weather conditions. Here are some general guidelines to help you determine when and how often to water:

Establishment Period (First Year):
During the first year after planting, Black Diamond Crape Myrtle 'Purely Purple' requires regular and consistent watering to help establish a strong root system. Water deeply every 7-10 days, especially during dry periods. Ensure that the soil remains consistently moist but not waterlogged.

Subsequent Years (After Establishment):
Once Black Diamond Crape Myrtle 'Purely Purple' is well-established (usually after the first growing season), they are generally considered drought-tolerant. However, they will benefit from occasional deep watering during dry spells.

Signs of Moisture Stress:
Monitor your crape myrtles for signs of moisture stress. If you notice wilting, drooping leaves, or the soil around the plant feels dry to the touch, it's time to water.

Watering Depth:
When you water, it's important to provide enough moisture to penetrate the root zone. Water deeply, allowing the water to soak into the soil to a depth of at least 6-8 inches.

Mulching:
Applying a layer of organic mulch (e.g., wood chips or shredded bark) around the base of your Black Diamond Crape Myrtle 'Purely Purple' can help retain soil moisture, regulate soil temperature, and reduce evaporation. Mulch also helps suppress weeds.

Seasonal Adjustments:
Adjust your watering schedule based on the season and local weather conditions. Crape myrtles may require more frequent watering during hot, dry summer months and less during cooler, rainy periods.

Rainfall:
Consider natural rainfall when determining your watering schedule. If your area receives consistent rainfall, you may need to water less frequently.

Drought Tolerance:
Keep in mind that Black Diamond Crape Myrtle 'Purely Purple' is known for its drought tolerance once established. It's better to slightly underwater than to overwater these plants.

Regularly monitor the soil moisture and the plant's condition to help you determine the appropriate watering frequency. The goal is to keep the soil consistently moist but not waterlogged to promote healthy growth and flowering. Adjust your watering regimen as needed to accommodate changing weather conditions and seasonal variations.

Yes, it is generally a good practice to cut off dead or spent blooms from crape myrtles, including Black Diamond Crape Myrtles. This process, known as deadheading, offers several benefits:

Promotes Additional Blooms: Deadheading encourages the crape myrtle to produce new flower buds and continue blooming throughout the growing season. It can result in more vibrant and extended flowering.

Enhances Aesthetics: Removing dead or faded blooms improves the overall appearance of the plant, making it look neater and tidier. It also prevents the plant from having a littered or unkempt appearance due to dead flowers.

Prevents Seed Formation: Deadheading prevents the formation of seeds in the spent flowers. While crape myrtle seeds are not typically problematic, removing spent flowers can help conserve the plant's energy for producing more blooms and foliage.

Here's how to deadhead crape myrtles effectively:

1. Use clean and sharp pruning shears or hand pruners.

2. Cut the faded or dead flower clusters just above a set of healthy leaves or buds. Make the cut at a 45-degree angle, leaving a small portion of the stem.

3. Remove all the dead or faded blooms on each branch, working your way through the entire plant.

4. Continue to deadhead throughout the growing season, especially when you notice spent flowers.

5. Avoid heavy pruning or removing significant portions of the plant, especially during the growing season, as this can remove potential flower buds for future blooms.

Deadheading is a simple and effective way to maintain the appearance and encourage the continued flowering of your Black Diamond Crape Myrtle. It's best to perform this task regularly, especially after each bloom cycle, to maximize the plant's blooming potential and overall beauty.

Pruning Black Diamond Crape Myrtle 'Purely Purple' is an essential part of their care and maintenance. Proper pruning helps maintain their shape, remove dead or diseased growth, and encourage vigorous growth and abundant flowering. Here are guidelines for pruning Black Diamond Crape Myrtle 'Purely Purple':

Pruning Time:
Prune Black Diamond Crape Myrtle 'Purely Purple' during late winter or early spring, preferably in late February to early March before new growth begins. This dormant period is ideal for shaping the plant without interfering with the upcoming bloom.

Prune for Health and Structure:
Start by removing any dead, diseased, or damaged branches. This helps maintain the overall health of the plant. Thin out crowded or crossing branches to improve air circulation and reduce the risk of disease. Aim to create a well-structured framework with a balanced shape. Black Diamond Crape Myrtle 'Purely Purple' naturally has an upright growth habit, so maintain that form.

Remove Suckers and Low Growth:
Crape myrtles often produce suckers or shoots from the base of the plant or at the graft union. Remove these suckers regularly to prevent them from diverting energy from the main plant.
Trim or prune any low, horizontal branches that may obstruct pedestrian traffic or hinder the plant's natural form.

Selective Pruning:
Use selective pruning to maintain the desired size and shape of your Black Diamond Crape Myrtle 'Purely Purple.' This type of pruning involves removing specific branches to create an attractive silhouette. Avoid "crape murder" or excessive topping, as it can harm the plant and reduce flowering. Maintain the natural form as much as possible.

Deadheading:
To extend the bloom period and promote continuous flowering, deadhead (remove spent blooms) during the growing season. This encourages the plant to produce new flower buds.
When deadheading, cut the spent flower clusters just above the first pair of healthy leaves beneath the spent blooms.

Pruning Tools:
Use sharp, clean pruning shears or loppers for smaller branches and a pruning saw for larger ones. Make clean cuts to minimize the risk of disease entry.

Avoid Overpruning:
It's important not to overprune Black Diamond Crape Myrtle 'Purely Purple.' These plants naturally have an upright growth habit, and excessive pruning can detract from their natural beauty.

Timing for Flowering Impact:
Keep in mind that while pruning during late winter or early spring is ideal for overall plant health, it may reduce the number of early-season blooms. However, this can lead to more compact growth and an extended blooming period later in the season.

Proper pruning enhances the overall appearance of Black Diamond Crape Myrtle 'Purely Purple' while ensuring a healthy and well-structured plant. Avoid heavy pruning during the growing season, as it can remove flower buds and delay flowering. Regular maintenance pruning, combined with selective shaping, will help your crape myrtle maintain its natural beauty and maximize its blooming potential.

Our Process

We have perfected packaging and shipping plants & trees! That is why we DO NOT use any third-party fulfillment like most other online retailers. Your trees go straight from our farm to your door, safely packaged by our team of seasoned professionals. Our process ensures your plants leave our facility and arrive to your door in the best condition possible!