WPC Double-Box Flower Box (Composite Wood Flower Boxes): A Combined Green Plant Carrier Integrating Zoned Cultivation and Scene Decoration
WPC Double-Box Flower Box (Composite Wood Flower Boxes) are designed with the concept of "double-box combination · zone empowerment", and realize the triple value of "functional zoned cultivation + layered landscape creation + scene function integration" through the "main-sub box linkage structure". In scenarios such as family gardening, commercial landscaping, and municipal greening, a single flower box often faces problems such as "single function unable to meet diverse cultivation needs", "monotonous shape difficult to create layered landscapes", and "low space utilization limited to complex scenarios" — for example, family courtyards need to cultivate both ornamental flowers and practical herbs but lack zoned space, commercial windows need to create high and low landscapes but are limited by the height of a single flower box, and municipal greenways need to balance green plant maintenance and pedestrian guidance but have no integrated functional design. The main box is suitable for large green plant cultivation, and the sub-box can flexibly carry small flowers, decorative ornaments or practical functional modules. It not only solves the functional limitations of traditional single flower boxes, but also adapts to diverse scenarios relying on the weather resistance and durability of WPC materials. It has become an ideal choice for "exquisite family gardening, creative commercial landscaping, and characteristic municipal greening", making green plant cultivation more flexible and landscape presentation more hierarchical.

Major Advantages of the Product
✅ Zoned Cultivation Design with Double-Box Linkage
Targeting the demand for "cultivating diverse green plants in the same scenario", Composite Wood Flower Boxes innovate the "main-sub box zoned structure":
- Space Zoning Optimization: The main box has dimensions of 80-120cm (length) × 40-60cm (width) × 50-70cm (height), with a depth suitable for green plants with developed root systems such as medium-sized trees and shrubs. The bottom of the main box adopts a "honeycomb drainage hole + inclined water barrier" design (slope 2.5°), with a drainage rate of 98% to avoid water accumulation and root rot. The sub-box has dimensions of 40-60cm (length) × 30-40cm (width) × 30-45cm (height), with a depth suitable for shallow-rooted plants such as small flowers, herbs, and succulents. The bottom of the sub-box reserves a "detachable partition", which can be further divided into 2-3 small areas to realize "multiple plants in one box".
- Linkage Structure Design: The main box and sub-box are connected by "adjustable buckles + slide rails". The sub-box can move forward and backward along the slide rails on the side of the main box (adjustment range 0-20cm) and rise and fall up and down (adjustment range 0-15cm), adapting to the light needs of green plants of different heights — for example, when trees are planted in the main box, the sub-box can be raised to avoid shading; when shrubs are planted in the main box, the sub-box can be lowered to form a layered landscape. Some styles support "detachable sub-box", which can be used as a desktop mini flower box or a small balcony scene after being detached separately, improving the flexibility of use.
- Cultivation Adaptation Optimization: The inner wall of the main box is added with "root guide lines" to guide the roots of large green plants to grow downward and avoid root entanglement. The sub-box is equipped with a "moisturizing cotton layer" to reduce water evaporation of shallow-rooted plants and extend the watering cycle (3-5 days longer than traditional flower boxes), adapting to the low-maintenance needs of busy families or commercial scenarios.
✅ Hierarchical Landscape Creation Ability
Centering on the demand for "scene landscape hierarchy", Composite Wood Flower Boxes strengthen the landscape effect from three aspects: "height difference, material color contrast, and function integration":
- Height Hierarchy Design: The default height difference between the main box and the sub-box is 15-25cm, which can be further expanded or reduced through adjustable buckles (maximum height difference 40cm). Matching green plants of different heights can create a "high-low scattered" landscape — for example, in a commercial window scenario, 1.2m tall Ficus lyrata is planted in the main box, and 0.5m tall Areca catechu is planted in the sub-box to form a natural hierarchy. The top of the sub-box can be equipped with a "foldable flower stand" (made of WPC thin rods, unfolded size 40cm × 30cm), which can hang trailing plants (such as Senecio rowleyanus and Hedera helix) to further enrich the vertical landscape dimension.
- Visual Hierarchy Optimization: The main box and sub-box support "material color contrast design". The main box uses WPC with wood grain texture, and the sub-box can choose WPC with matte texture or bright texture. The visual hierarchy is enhanced through material differences. Some styles add an "LED light strip groove" at the connection between the main box and the sub-box, which can outline the outline of the double boxes after being lit at night and strengthen the visual focus of the landscape.
- Scene Landscape Adaptation: The sub-box of the family scene style can place decorative pebbles and small sculptures to improve the delicacy of the courtyard; the sub-box of the commercial scene style can be embedded with a "transparent acrylic display box", with built-in brand LOGO or seasonal theme decorations, taking into account both landscape and promotion; the sub-box of the municipal scene style can be equipped with "reflective strips" to guide pedestrians at night and improve the safety of greenways.
✅ Function Expansion Characteristics of Double-Box Integration
Relying on the "double-box space", Composite Wood Flower Boxes realize the integration of "green plant cultivation + practical functions":
- Family Scene Functions: The sub-box can be replaced with a "multi-functional module" — for example, the "herb cultivation + tool storage" module, where herbs are cultivated on the left side of the sub-box, and a hidden drawer (size 20cm × 15cm × 8cm) is set on the right side to store gardening scissors, watering cans and other tools; the "flower cultivation + lighting decoration" module, where the sub-box has a built-in waterproof LED light string, which is lit at night to set off the courtyard atmosphere.
- Commercial Scene Functions: The sub-box can integrate "information display + small advertising" functions. A "replaceable poster frame" (size 30cm × 20cm) is embedded on the side of the sub-box to display new product information or event posters. The poster frame is made of waterproof material and is not damaged when used outdoors. Some commercial sub-boxes are equipped with a "small spray device" (battery life 8 hours, timed spray), which not only moisturizes green plants but also creates a "mist forest" landscape effect to attract customers' attention.
- Municipal Scene Functions: The side of the main box reserves a "municipal sign slot", which can be embedded with road signs and public welfare slogan boards. The sub-box can integrate a "garbage classification prompt box" or a "pet poop bag dispenser", combining green plant greening with public service functions to improve the utilization rate of municipal space. All functional modules adopt a "plug-in design" and can be flexibly replaced according to scene needs without replacing the entire flower box.
✅ Durable Protection System for Full-Scene Adaptation
Aiming at different scene environments such as family, commercial and municipal, it build a "three-dimensional protection" system:
- Material Protection: Adopting "high-density composite WPC material" (density 1.3-1.4g/cm³), the surface is added with "anti-UV coating + anti-fouling coating". It has no fading (color difference ΔE ≤ 1.8) or embrittlement after 6 years of outdoor use, and stains can be directly wiped with a damp cloth. The water absorption rate is ≤ 0.25%, with no penetration and expansion after rain. The material is resistant to insects and corrosion, adapting to humid coastal environments or dry northern environments.
- Structural Protection: The connecting buckles between the main box and the sub-box are made of "304 stainless steel material", which has strong rust resistance. The surface of the buckles is treated with "anti-slip treatment" and has no loosening after adjustment. The slide rails have a built-in "dust-proof seal ring" to prevent dust and fallen leaves from entering and affecting sliding. The bottom of the main box is equipped with "thickened support feet" (height 5-8cm) to avoid ground moisture erosion and improve stability at the same time.
- Scene-Specific Protection: The bottom of the family balcony style is added with a "mute anti-slip pad" (made of rubber, thickness 2cm) to prevent scratching the floor and no noise during movement; the commercial outdoor style is added with an "anti-graffiti coating", and graffiti can be easily removed with a special cleaning agent; the side of the main box of the municipal style adopts "anti-collision protrusions" (height 8cm, made of elastic WPC) to reduce damage to the flower box caused by pedestrian and vehicle collisions.
✅ Low-Maintenance, Environmental Protection and Safety Characteristics
Composite Wood Flower Boxes have significant advantages in use convenience, environmental protection and safety:
- Low-Maintenance Design: The material does not require regular painting of anti-corrosion paint or insect repellent, and daily maintenance only requires rinsing the surface with clean water every 2-3 months. The drainage holes of the main box and sub-box adopt a "large-diameter design" (diameter 2.5cm), which is not easy to block and does not require frequent cleaning. Some styles of sub-boxes are equipped with an "automatic watering device" (capacity 1.5L, timed and quantitative watering), so there is no need to worry about green plants lacking water when going out.
- Environmental Protection Characteristics: The raw materials adopt "75% recycled wood fiber + 20% recycled plastic + 5% natural bamboo fiber". The production of 100 sets of double-box flower boxes can reduce 1.8 tons of plastic waste and save 1.1 cubic meters of wood. The production process adopts a "zero-emission extrusion process" with no waste water or waste gas, and the product can be 100% recycled and reused after scrapping.
- Safety Design: All edges and corners are treated with "R10mm rounded corners" to avoid collision injuries to family children or municipal pedestrians. The material has passed the "food-grade safety test", and no harmful substances are released when cultivating edible plants such as herbs and vegetables in the sub-box. The connecting parts of the main box and sub-box are all "hidden design" with no sharp protrusions, making use safer.
Application of More Than Ten Colors
Durable-Fences Flower Boxes have 23 color options, adapting to different scene styles:
- Family Scenarios: You can choose "light oak main box + milk white sub-box" to match the natural style of the courtyard. Lagerstroemia indica is planted in the main box and Lavandula angustifolia is cultivated in the sub-box to create a warm atmosphere; "dark walnut main box + mint green sub-box" is suitable for modern simple balconies. Monstera deliciosa is planted in the main box and succulents are cultivated in the sub-box, with fresh and vibrant colors.
- Commercial Scenarios: You can choose "black main box + gold sub-box" to match high-end brand windows. Large green plants are planted in the main box and brand LOGO is embedded in the sub-box to highlight the sense of quality; "gray main box + bright orange sub-box" is suitable for fast fashion stores, with bright colors to attract customer flow.
- Municipal Scenarios: You can choose "military green main box + light gray sub-box" to match urban greenways. Street shrubs are planted in the main box and road signs are integrated in the sub-box to integrate with the outdoor environment; "brick red main box + beige sub-box" is suitable for the transformation of old urban areas, echoing the tone of historical buildings and improving the texture of the block.
In addition, it supports "two-color customization of main and sub-boxes", and the color matching can be adjusted according to scene themes (such as festivals and events) to further enhance landscape adaptability.
OEM and ODM Services
To meet the customization needs of global customers, Composite Wood Flower Boxes provide "scene-based customization" OEM and ODM services:
- OEM Services: Customers can provide brand logos, size specifications of main and sub-boxes (length/width/height), color matching, and functional module requirements (such as whether to add spray devices and advertising frames). We rely on a "special production line for double-box flower boxes" to achieve standardized production, supporting a minimum order of 40 sets with a minimum order cycle of 15 days. At the same time, we provide free "scene adaptation plans" — for example, recommending the "main box for green plant cultivation + sub-box integrated with cup holders" style for coffee shops, and the "main box for tree cultivation + sub-box integrated with pet poop bag dispensers" style for communities. We can also screen-print brand LOGOs or municipal slogans on the side of the main box for free to improve brand recognition.
- ODM Services: The design team conducts original designs based on the scene needs of the customer's target market (such as strengthening sun protection and waterproofing in tropical regions, and optimizing frost resistance in frigid regions) and cultural preferences (such as designing arc-shaped double boxes for European-style scenarios and carved double boxes for Chinese-style scenarios). For example, designing the "main box for tropical plant cultivation + sub-box integrated with small refrigerated boxes (for storing ice cubes)" style for Southeast Asian coffee shops, and the "main box + double sub-box combination (forming a symmetrical landscape)" style for Nordic home stores. During the design process, "3D scene renderings + 1:1 physical samples" are provided, allowing customers to intuitively view the presentation effect of the double-box flower boxes in the target scene. The samples support a 22-day trial. We also assist customers in passing the EU EN 14411 wood-plastic product certification, US ASTM D7334 weather resistance certification, China Ten-Ring Certification, etc., to ensure the product meets global standards.

Relevant Qualification Certifications
Composite Wood Flower Boxes have passed a number of domestic and foreign authoritative certifications and special tests, with guaranteed quality:
- International Certifications: Passed the EU EN 14411 Outdoor Wood-Plastic Product Durability Certification (simulating 8 years of outdoor use with no fading or deformation), EU REACH Regulation Certification (197 harmful chemicals not detected), and US ASTM D6341 Gardening Product Safety Certification (covering structural stability and material safety tests).
- Domestic Certifications: Complies with the GB/T 35465-2017 "Wood-Plastic Composite Profiles" standard, GB 18586-2001 "Indoor Decoration Materials - Limits of Harmful Substances in Polyvinyl Chloride Roll Flooring" (no heavy metals or volatile organic compounds exceeding standards), and GB/T 24137-2009 "Wood-Plastic Decorative Panels" (appearance quality and mechanical properties meet first-class product standards).
- Special Tests: Passed the "double-box performance test" of the National Center for Quality Supervision and Test of Plastic Products: Linkage structure test (10,000 adjustments with no jamming or loosening), load-bearing test (main box load-bearing ≥ 300kg, sub-box load-bearing ≥ 100kg, no deformation), weather resistance test (50 cycles of -30℃ to 60℃ with no cracking), drainage test (simulated heavy rain, no water accumulation in main and sub-boxes); the family style passed the GB 6675-2014 "Toy Safety" certification to ensure the safety of children's contact; the commercial style passed the IPX5 waterproof certification and is not damaged when used outdoors in rainy days.

Conclusion
With "double-box zoning · scene empowerment", WPC Double-Box Flower Box (Composite Wood Flower Boxes) break the functional limitations of traditional single flower boxes, upgrading green plant cultivation from "single carrying" to "multi-dimensional empowerment" — in family courtyards, it is an exquisite cultivation space for "ornamental flowers + practical herbs"; in commercial windows, it is a creative carrier for "layered landscapes + brand promotion"; in municipal greenways, it is a functional integration platform for "green plant greening + public services". We always take "users' scenario-based needs" as the core, and focus on the goal of "making green plant cultivation more flexible, landscape presentation more abundant, and scene adaptation more accurate" throughout the process from double-box structure research and development to functional module design, and from material selection to production and installation. Relying on the durability of WPC materials and innovative double-box design, we endow each scene with unique green plant value.
FAQ
1.What's the MOQ for custom designs?
500 units – we provide 3D prototypes within 72 hours.
2.How do they handle saltwater climates?
Hydrophobic additives prevent corrosion – perfect for coastal resorts.
3.Are palletized shipments available?
Yes – optimized for sea transport with moisture-proof wrapping.
Contact Us
📧 Email: info@durable-fences.com
📞 Phone: +86 18066962697
💬 WhatsApp: +86 18066962697
🟢 WeChat: +86 18066962697
Choosing WPC Double-Box Flower Box (Composite Wood Flower Boxes) is not only choosing a flower box, but also choosing a "refined, hierarchical, and functional" green plant lifestyle. It is believed that it will accompany users in creating more beautiful spaces with both natural vitality and practical value in family, commercial, and municipal scenarios.