Table of Contents
Introduction
Japanese Forest Grass, scientifically known as Hakonechloa, is a stunning ornamental grass that brings a touch of elegance and tranquility to any garden. Its graceful arching foliage and vibrant colors make it a popular choice among gardeners. One way to enhance the beauty and maximize the potential of Japanese Forest Grass is through Japanese Forest Grass companion plants. By selecting the right companion plants, you can create visually captivating combinations while also providing numerous benefits for your garden ecosystem. In this article, we will explore the benefits of Japanese Forest Grass companion planting and provide insights on how to choose the perfect companions.

Enhancing Visual Appeal: Creating Stunning Combinations
One of the key benefits of Japanese Forest Grass companion planting is the ability to create visually stunning combinations in your garden. The arching, cascading foliage of Hakonechloa provides a beautiful backdrop that can be accentuated with the right companion plants. For example, pairing Japanese Forest Grass with vibrant perennials like purple coneflowers (Echinacea purpurea) or astilbes (Astilbe spp.) creates a striking contrast in color and texture. The delicate foliage of Japanese Forest Grass can also provide a soft and airy contrast when planted alongside bold-leaved plants like hostas (Hosta spp.) or heucheras (Heuchera spp.).
Adding Textural Interest: Balancing Different Leaf Forms
Japanese Forest Grass companion planting offers the opportunity to play with different leaf forms and textures, adding depth and interest to your garden design. The fine, grass-like foliage of Hakonechloa creates a delicate and flowing appearance. Pairing it with companion plants that have contrasting leaf shapes can create a visually appealing balance. For instance, combining Japanese Forest Grass with plants that have broad, heart-shaped leaves, such as lungworts (Pulmonaria spp.) or ligularias (Ligularia spp.), adds visual interest and variety to the garden bed.
Providing Color Contrast: Enhancing the Beauty of Japanese Forest Grass
Japanese forest grass companion plants can also be selected to provide striking color contrast to complement the beauty of Japanese Forest Grass. The various cultivars of Hakonechloa offer a range of foliage colors, including shades of green, gold, and variegated forms. Pairing them with plants that have contrasting colors, such as coral bells (Heuchera spp.) with their vibrant foliage or purple-leaved sedums (Sedum spp.), can create eye-catching combinations that enhance the overall visual impact of the garden.
Creating Microclimates: Offering Shelter and Protection
Companion planting with Japanese Forest Grass can create microclimates within your garden, offering shelter and protection for both the grass itself and its companion plants. The dense and arching foliage of Hakonechloa acts as a natural canopy, providing shade and reducing moisture evaporation from the soil. This can benefit shade-loving plants that prefer cooler and more protected growing conditions. Additionally, the presence of Japanese Forest Grass can act as a windbreak, reducing wind exposure and protecting more delicate plants from excessive drying or damage.
Soil Improvement and Weed Suppression

Japanese Forest Grass companion plants can contribute to soil improvement by enhancing organic matter content, promoting better drainage, and reducing soil erosion. Planting groundcovers like foamflowers (Tiarella spp.) or creeping thyme (Thymus spp.) alongside Hakonechloa helps to suppress weed growth, preventing weeds from competing with the grass and reducing the need for excessive manual weeding.1
In conclusion, Japanese Forest Grass companion planting offers numerous benefits for your garden. By carefully selecting companion plants that enhance visual appeal, provide textural interest, offer color contrast, create microclimates, and contribute to soil improvement, you can create a harmonious and thriving garden ecosystem. Consider the specific needs and growth habits of both Hakonechloa and its companion plants to ensure compatibility and maximize the potential of your garden design.
Companion Plants for Japanese Forest Grass: Characteristics, Cultivation, and Synergy
When selecting companion plants for Japanese Forest Grass (Hakonechloa), it’s essential to consider their characteristics, cultivation requirements, and how they synergize to maximize the potential of your garden. By carefully choosing the right companions, you can create a harmonious and visually captivating landscape. Here are seven Japanese forest grass companion plants that complement Japanese Forest Grass and contribute to a thriving garden ecosystem:
- Astilbe
- Foamflower
- Hosta
- Coral Bells
- Lungwort
- Japanese Painted Fern
- Japanese Spurge
Astilbe (Astilbe spp.)

Astilbe is an ideal companion for Japanese Forest Grass due to its similar growing conditions and complementary aesthetics. Both plants thrive in partial shade to full shade and prefer moist, well-drained soil. The feathery plumes of astilbe create a beautiful contrast with the arching foliage of Hakonechloa. Consider pairing Japanese Forest Grass with astilbe cultivars such as ‘Fanal’ with its deep red flowers or ‘Bridal Veil’ with its delicate white blooms.
Foamflower (Tiarella spp.)
Foamflower is a lovely companion plant for Japanese Forest Grass, sharing similar light and moisture requirements. These shade-loving perennials feature attractive foliage and delicate, foam-like flowers in shades of pink, white, or purple. Planting foamflowers alongside Hakonechloa creates a lush and texturally diverse groundcover that thrives in moist, well-drained soil.
Hosta (Hosta spp.)

Hostas are popular companion plants for Japanese Forest Grass, offering a striking contrast in leaf shape, texture, and color. With a vast array of cultivars available, you can select hostas that range from solid green to variegated or even blue-leafed varieties. Both Hakonechloa and hostas thrive in partial shade to full shade and require regular watering to maintain their lush appearance.
Coral Bells (Heuchera spp.)

Coral Bells make excellent companions for Japanese Forest Grass, providing a burst of vibrant color and contrasting foliage. These adaptable perennials come in a variety of hues, including as burgundy, purple, green, and silver tones. Pairing the mounding habit of Heuchera with the arching form of Hakonechloa creates a visually appealing combination that adds texture and interest to your garden.
Lungwort (Pulmonaria spp.)
Lungwort is a shade-loving perennial that pairs well with Japanese Forest Grass. Its distinctive silver-spotted or silver-veined foliage adds interest and contrasts beautifully with the fine texture of Hakonechloa. Lungwort blooms in early spring, producing clusters of delicate flowers in shades of pink, blue, or white. These low-maintenance plants prefer moist, well-drained soil and are excellent companions for creating a woodland-inspired garden.
Japanese Painted Fern (Athyrium niponicum var. pictum)
Japanese Painted Fern is a natural companion for Japanese Forest Grass, sharing similar cultural requirements and adding a touch of elegance to the garden. Its arching fronds feature silver, green, and burgundy hues, creating a stunning visual contrast alongside the cascading habit of Hakonechloa. Both plants flourish in soil that is consistently wet, has good drainage, and has some shade.
Japanese Spurge (Pachysandra terminalis)
Japanese Spurge is a low-growing, evergreen groundcover that pairs well with Japanese Forest Grass, especially in shady areas. Its glossy, dark green leaves form a dense carpet-like mat, providing a beautiful backdrop for the delicate foliage of Hakonechloa. Japanese Spurge is tolerant of a wide range of soil conditions and requires minimal maintenance, making it an excellent choice for creating a lush and weed-resistant groundcover.
When planting these companion plants alongside Japanese Forest Grass, ensure that they share similar light and moisture requirements. Prepare the soil adequately, providing good drainage and organic matter. Regularly monitor and adjust watering to maintain appropriate moisture levels for both the grass and its companions.
By incorporating these seven companion plants into your garden, you can create a visually appealing and ecologically balanced landscape that maximizes the potential of Japanese Forest Grass. Remember to consider the unique characteristics of each plant, their compatibility, and the overall design objectives of your garden.
Bad Japanese Forest Grass Companion Plants
While selecting the right companion plants for Japanese Forest Grass can enhance your garden, it’s important to be aware of potential challenges and avoid certain combinations that may hinder the growth and overall aesthetics of your landscape. Here are some examples of specific plants that may not synergize well with Japanese Forest Grass.
Aggressive Spreaders: Invasive Plants
When choosing companion plants, it’s crucial to avoid plants that are aggressive spreaders or invasive species. Plants like purple loosestrife (Lythrum salicaria) or common periwinkle (Vinca minor) have a tendency to spread quickly and overtake garden beds, outcompeting and overshadowing Japanese Forest Grass. Their invasive nature can disrupt the delicate and graceful appearance of Hakonechloa.
Sun-Loving Plants: Incompatible Light Requirements

Japanese Forest Grass thrives in partial shade to full shade conditions. Avoid planting sun-loving plants that require full sun, as they may struggle in the shaded environment alongside Hakonechloa. Sunflowers and lavender are a few of examples of these plants. These plants prefer full sun to flourish and may not perform well when competing for light with Japanese Forest Grass. It’s best to choose shade-tolerant plants that can thrive in the same light conditions.
Water-Loving Plants: Differing Moisture Preferences

Japanese Forest Grass has moderate water requirements and thrives in moist, well-drained soil. Avoid companion plants that have significantly different moisture preferences. For instance, plants like cattails (Typha spp.) or water lilies (Nymphaea spp.) prefer waterlogged conditions and may not thrive when planted alongside Hakonechloa. The mismatched moisture requirements can lead to issues such as water stress or root rot. It’s important to select companion plants with similar moisture preferences to ensure the health and longevity of both the grass and its companions.
Overcrowding: Insufficient Space for Growth
Overcrowding can hinder the growth and performance of Japanese Forest Grass. Avoid planting companion plants that require significant space or have aggressive growth habits. Examples of plants to avoid include bamboo (Bambusoideae) or large ornamental grasses that can quickly outgrow and overshadow Hakonechloa. Insufficient space for growth can lead to competition for resources like water, nutrients, and sunlight, resulting in stunted growth or poor performance for both the grass and its companions.
Soil Preferences: Incompatible Soil Conditions
Japanese Forest Grass thrives in well-drained soil with a slightly acidic to neutral pH. It’s important to avoid companion plants that have significantly different soil preferences. For instance, plants that prefer highly alkaline soil, such as lavender (Lavandula spp.), or those that prefer compacted or heavy clay soil, like roses (Rosa spp.), may not be compatible with Hakonechloa. Assess the soil conditions in your garden and choose companion plants with similar soil requirements to create a cohesive planting scheme.
By being mindful of the potential challenges and avoiding specific bad companion plants for Japanese Forest Grass, you can maintain the health, beauty, and balance of your garden. Consider the growth habits, light and moisture preferences, soil requirements, and potential invasiveness of companion plants before incorporating them into your garden alongside Hakonechloa.
Tips for Growing Japanese Forest Grass with Other Plants: Insights from a Gardener
As an experienced gardener, I have learned valuable tips for growing Japanese Forest Grass (Hakonechloa) with other plants that can help you create a harmonious and thriving garden. By considering the specific needs of both Japanese Forest Grass and its companion plants, you can achieve a visually appealing and ecologically balanced landscape. Here are some practical tips based on my personal experience:
Assess Light and Moisture Requirements for Japanese Forest Grass Companion Plants
Before selecting companion plants for Japanese Forest Grass, carefully assess their light and moisture requirements. Hakonechloa thrives in partial shade to full shade conditions and prefers moist, well-drained soil. Choose companion plants that share similar light and moisture preferences to ensure they coexist harmoniously. For instance, shade-loving plants like hostas or ferns are ideal choices that complement the growing conditions of Japanese Forest Grass.
Consider Contrast in Form and Texture for Japanese Forest Grass Companion Plants
To create visually captivating combinations, consider contrasting the form and texture of companion plants with Japanese Forest Grass. The fine, arching foliage of Hakonechloa pairs well with plants that have bolder leaf shapes or textures. For example, broad-leaved hostas or ornamental grasses with upright growth habits create an attractive contrast that adds depth and interest to the garden.
Plan for Color Harmony with Japanese Forest Grass Companion Plants
Consider color harmony when selecting companion plants for Japanese Forest Grass. The various cultivars of Hakonechloa offer shades of green, gold, and variegated foliage. Choose Japanese Forest Grass companion plants with colors that complement or harmonize with the foliage of Japanese Forest Grass. For instance, pairing Hakonechloa with purple-leaved coral bells or blue-flowered lungworts can create visually pleasing combinations.
Ensure Proper Spacing for Japanese Forest Grass Companion Plants
Give careful consideration to the spacing between Japanese Forest Grass and its companion plants. Provide enough room for each plant to grow and showcase its unique characteristics without overcrowding. Overcrowding can lead to competition for resources and hinder the growth of both the grass and its companions. Follow the recommended spacing guidelines provided for each plant to create a well-balanced and visually appealing garden.
Maintain Adequate Moisture Levels for Japanese Forest Grass Companion Plants
Japanese Forest Grass benefits from consistent moisture levels in the soil. Ensure that companion plants have similar water requirements to prevent under- or over-watering situations. Monitor the moisture levels regularly and adjust watering accordingly to maintain optimal conditions for both Hakonechloa and its companions. Mulching around the plants can help retain moisture and regulate soil temperature.
Regular Maintenance and Care for Japanese Forest Grass Companion Plants
Like any garden plants, Japanese Forest Grass and its companion plants require regular maintenance and care. Remove any weeds or competing vegetation to prevent them from outcompeting the desired plants. Prune or divide plants as needed to maintain their health and aesthetics. Keep a regular eye out for pests and illnesses, and if required, take the necessary steps to control them. Periodic Evaluation and Adjustments for Japanese Forest Grass Companion Plants
Periodically evaluate the performance and compatibility of the companion plants with Japanese Forest Grass. Observe how they interact and make adjustments as needed to maintain a balanced and harmonious garden. Some plants may thrive better in certain locations or require different care than initially anticipated. Don’t hesitate to make changes or replacements to optimize the overall beauty and health of your garden.
By following these tips and considering the unique characteristics of both Japanese Forest Grass and its companion plants, you can create a beautiful and thriving garden. Experiment with different combinations, take note of your observations, and let your creativity guide you in designing a landscape that showcases the splendor of Hakonechloa and its companions.
What to Avoid When Planting Japanese Forest Grass with Other Plants
To ensure successful and harmonious growth when planting Japanese Forest Grass (Hakonechloa) with other plants, it’s important to be aware of potential pitfalls and avoid certain practices that may hinder the overall health and aesthetic appeal of your garden. Here are some key considerations to keep in mind:
Avoid Planting Invasive Species as Japanese Forest Grass Companions
When selecting companion plants for Japanese Forest Grass, it’s crucial to avoid invasive species that can quickly spread and overpower the delicate beauty of Hakonechloa. Invasive plants like purple loosestrife (Lythrum salicaria) or common periwinkle (Vinca minor) can take over garden beds, outcompeting Japanese Forest Grass and other desired plants. These aggressive species disrupt the balance and may require significant efforts to control or eradicate.
Avoid Plants with Differing Moisture Requirements
Japanese Forest Grass prefers moist, well-drained soil. It’s important to avoid planting companion plants with significantly different moisture preferences, as this can lead to watering issues and negatively impact the growth of both Hakonechloa and its companions. For instance, planting cacti or succulents alongside Japanese Forest Grass can result in uneven watering practices and potential stress for the plants. Choose companion plants that have similar moisture requirements to maintain an optimal growing environment for all.
Avoid Overcrowding and Insufficient Spacing
Proper spacing is crucial when planting Japanese Forest Grass with other plants. Overcrowding can lead to competition for resources, limiting the growth and overall health of the plants. Avoid planting companion plants with aggressive growth habits or plants that require ample space too close to Hakonechloa. Give each plant sufficient room to develop and express its unique characteristics. Adequate spacing allows for proper airflow and access to essential resources, fostering healthy growth and minimizing potential issues.
Avoid Planting in Incompatible Soil Conditions
Japanese Forest Grass thrives in well-drained soil with a slightly acidic to neutral pH. Avoid planting companion plants with significantly different soil preferences, as this can create imbalances in nutrient availability and soil moisture. For example, roses (Rosa spp.) prefer compacted or heavy clay soil, while lavender (Lavandula spp.) prefers highly alkaline conditions. Assess the soil conditions and choose companion plants that have similar soil requirements to promote overall plant health and vitality.
Regular Maintenance and Monitoring
To ensure the long-term success of your Japanese Forest Grass and its companion plants, regular maintenance and monitoring are essential. Stay vigilant against weeds, pests, and diseases, as these can impact the overall health and aesthetics of your garden. Remove any competing vegetation promptly and address any issues that arise. Regularly assess the growth and compatibility of companion plants with Hakonechloa and make adjustments as needed to maintain balance and harmony in your garden.
By avoiding common pitfalls and following these guidelines, you can cultivate a thriving garden where Japanese Forest Grass and its companion plants coexist harmoniously. Choose compatible companions, consider their specific requirements, and monitor the garden regularly to ensure a visually appealing and ecologically balanced landscape.
References
- Hu, R., Kusa, K., & Hatano, R. (2001). Soil respiration and methane flux in adjacent forest, grassland, and cornfield soils in Hokkaido, Japan. Soil Science and Plant Nutrition, 47(3), 621-627. Retrieved from: Soil respiration and methane flux in adjacent forest, grassland, and cornfield soils in Hokkaido, Japan: Soil Science and Plant Nutrition: Vol 47, No 3 (tandfonline.com)