Plant Encyclopedia

Summerific® 'Lilac Crush' Rose Mallow

Hibiscus hybrid

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Summerific® 'Lilac Crush' Rose Mallow

Discover More Information On Summerific® 'Lilac Crush' Rose Mallow

Introducing the Summerific® 'Lilac Crush' Rose Mallow, a captivating Hibiscus hybrid that brings a touch of serene beauty to any garden. This perennial stands tall with a mature size of 5 to 5'6" in height and spreads out to 4 to 4'6", creating a striking display in the landscape. The 'Lilac Crush' is distinguished by its lavender blue flowers that span 7-8 inches wide, featuring overlapping petals of a thick substance that show their most vibrant hue under cooler conditions. Its upright, columnar habit is not only visually appealing but also sturdy, effectively resisting lodging.

Hardy in zones 4 through 9, this plant is adaptable to a wide range of climates, thriving in areas with an average annual extreme minimum temperature as defined by its hardiness zones. This makes it a versatile addition to gardens across many regions, ensuring that it will not only survive but flourish through the winter and return year after year.

The 'Lilac Crush' Rose Mallow is a low-maintenance plant that demands attention in any garden setting. It requires part sun to full sun exposure, thriving in both with a preference for moist, well-drained soil. Ideal for borders, landscapes, and as a specimen or focal point, it blooms from mid-summer through early fall, offering long-lasting color and interest. In addition to its stunning flowers, this plant attracts hummingbirds while resisting deer, making it a valuable addition to the ecosystem of your garden.

Plant Attributes

The Summerific® 'Lilac Crush' Rose Mallow is a splendid perennial that boasts an array of desirable attributes, making it a standout choice for gardeners seeking both beauty and functionality in their landscapes. This hibiscus hybrid marvels with its large, lavender blue flowers that can reach 7-8 inches in width, characterized by their overlapping petals of substantial thickness. These blooms exhibit their most intense blue hue under cooler weather conditions, adding a dynamic element to the garden as the seasons change.

Adaptable and hardy across zones 4 to 9, 'Lilac Crush' is designed to thrive in a variety of climates, capable of enduring the average annual extreme minimum temperatures specific to these zones. Its growth habit is both upright and columnar, reaching a mature height of 5 to 5'6" and spreading 4 to 4'6" wide. This sturdy structure resists lodging, ensuring the plant maintains its graceful posture throughout the growing season.

Beyond its visual appeal, the 'Lilac Crush' Rose Mallow is celebrated for its ease of care and versatile planting options. It flourishes under part to full sun exposure, requiring just an average amount of water to produce larger flowers and lush foliage. This plant is not only a magnet for hummingbirds but also exhibits resistance to deer, making it a harmonious addition to the garden ecosystem. Its foliage, a deep green, provides the perfect backdrop for its stunning flowers, enhancing the plant's overall aesthetic appeal.

Landscape Use

The Summerific® 'Lilac Crush' Rose Mallow is a highly versatile plant that offers numerous landscaping uses, making it an excellent choice for a variety of garden designs and purposes. Its striking appearance and robust growth habits enable it to fulfill multiple roles within the garden setting:

  • Specimen or Focal Point: With its tall stature, large lavender blue flowers, and lush green foliage, 'Lilac Crush' can serve as a stunning focal point in any garden. Plant it alone to draw attention to a specific area or use it as a centerpiece in a mixed border for a dramatic visual impact.
  • Border Plantings: The upright and columnar habit of 'Lilac Crush' makes it ideal for border plantings, where its height can create a beautiful backdrop for shorter plants. Its long blooming period ensures vibrant color from mid-summer through early fall, enhancing the overall appeal of garden borders.
  • Mixed Perennial Beds: Integrating 'Lilac Crush' into mixed perennial beds can add height, texture, and color contrast. Its large flowers and tall growth pair well with a wide range of perennials, offering a continuous display of blooms and foliage interest throughout the growing season.
  • Wildlife Gardens: Attracting hummingbirds while resisting deer, 'Lilac Crush' is an excellent addition to wildlife gardens. Its nectar-rich flowers provide a valuable food source for hummingbirds, contributing to the biodiversity of the garden ecosystem.
  • Cottage Gardens: The romantic, large blooms and soft color palette of 'Lilac Crush' complement the informal, densely planted style of cottage gardens. Its ability to blend with a variety of plants, from ornamental grasses to other flowering perennials, makes it a perfect choice for this garden style.
  • Water Garden Surroundings: Suitable as a bog plant, 'Lilac Crush' can be planted around the edges of water gardens or in moist areas, where its lush growth and vibrant flowers enhance the aquatic landscape.
  • Container Gardening: Although it reaches a considerable size, 'Lilac Crush' can also be grown in large containers where it acts as a 'thriller' element, providing vertical interest and vibrant color to patio, balcony, or courtyard gardens.
  • Erosion Control: The sturdy, upright growth habit of 'Lilac Crush' can help in stabilizing soil and controlling erosion in sloped gardens or areas prone to soil loss, especially when planted in groups.

By incorporating the Summerific® 'Lilac Crush' Rose Mallow into your garden, you can enjoy a multitude of benefits ranging from aesthetic enhancement to ecological support, making it a valuable addition to diverse garden designs and landscapes.

Planting & Care

Planting and caring for the Summerific® 'Lilac Crush' Rose Mallow involves several key steps to ensure its vigorous growth and stunning floral display. Here is a comprehensive guide to help you grow and maintain this beautiful perennial:

Planting Instructions:

  1. Timing: Plant in early spring or fall to avoid the stress of summer heat. Hibiscus is one of the last perennials to emerge in spring, so patience is key.
  2. Location: Choose a location that receives part to full sun exposure (4-6 hours of sun at a minimum, but more is better).
  3. Soil: Ensure the soil is well-drained and rich in organic matter. Hibiscus prefers moist soil conditions but will not tolerate standing water.
  4. Planting: Dig a hole as deep as the root ball and twice as wide. Place the plant in the hole, making sure the top of the root ball is level with the soil surface. Backfill with soil, gently tamp down to remove air pockets, and water thoroughly.

Care Instructions:

  • Watering: Water regularly to keep the soil consistently moist, especially during dry spells. Hibiscus loves moist conditions but avoid overwatering.
  • Mulching: Apply a 2-3 inch layer of mulch around the base of the plant to help retain soil moisture and regulate soil temperature.
  • Fertilizing: Feed with a balanced, slow-release fertilizer in early spring and again in mid-summer to support vigorous growth and blooming.
  • Pruning: Cut back any remaining stems to ground level in early spring before new growth appears. Do not prune in the fall, as the plant needs time to harden off for winter.
  • Winter Care: In zones at the cooler end of its hardiness range, apply a thick layer of mulch after the ground freezes to protect the roots over winter. In spring, remove the excess mulch to allow new shoots to emerge.
  • Pest and Disease Management: Keep an eye out for common pests such as Japanese beetles. Practice good garden hygiene by removing dead leaves and debris to prevent disease.

Additional Tips:

  • Late Emergence: Remember, Hibiscus is often one of the last perennials to show growth in the spring. Be patient; it's likely not dead but just slow to start.
  • Deadheading: While not necessary for continued blooming, removing spent flowers can improve the plant's appearance.
  • Growth Rate: 'Lilac Crush' has a vigorous growth rate. Its robust nature will more than make up for its late start in the season, quickly filling in the garden space with lush foliage and vibrant blooms.

By following these planting and care guidelines, your Summerific® 'Lilac Crush' Rose Mallow will thrive, bringing a burst of lavender-blue beauty to your garden from mid-summer through early fall.

Additional Information

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Summerific® 'Lilac Crush' Rose Mallow


Plant Features

  • Plant Type: Perennial
  • Watering Needs: Moist, well-drained soil; water regularly to maintain larger flowers and lush foliage.
  • Botanical Pronunciation: HI-bis-kus HY-brid
  • Deciduous/evergreen: Herbaceous
  • Growth rate: Vigorous
  • Average landscape size: Grows to a height of 5' - 5'6" and a spread of 4' - 4'6".
  • Special features: Attracts hummingbirds, deer resistant, native to North America, long blooming, fall interest, suitable as a bog plant.
  • Foliage color: Green
  • Blooms: Mid-summer to early fall
  • Flower color: Lavender blue
  • Flower attributes: Large, showy flowers with overlapping petals.
  • Garden style: Cottage, Tropical
  • Design Ideas: Ideal for use as a specimen or focal point in garden borders and landscapes. It can serve as a 'thriller' component in container gardens due to its tall and upright habit. Its vibrant blooms and lush foliage make it a perfect choice for creating a tropical ambiance in temperate gardens. Plant in groups to create a stunning visual impact or mix with other perennials for a varied garden design. Suitable for attracting wildlife and adding color to boggy or moist areas of the garden.
  • Companion Plants: Complement with other moisture-loving plants such as ferns and astilbes for a garden with varied textures and colors. Pair with ornamental grasses or echinacea for a dynamic contrast in form and color.

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