Best Plastic Window Boxes For Plants for Windowsills and Balconies

#1 · Best Overall

1. Fasmov Window Box Planters

• Dimensions: 7 x 17 x 5.5 in
• Material: Plastic
• Size: 17 in x 7 in x 5.5 in

Best for: Labeled Balcony Planting Sets.

Why it ranks #1: Seven 17-inch planters include removable trays, six drainage holes per box, and labels, combining useful planting capacity with runoff management.

Seven removable trays and seven plant labels make the Fasmov set especially useful when organizing several balcony or patio plantings. Each black plastic box is 17 inches long, and the labels provide a way to identify separate herbs or flowers while the trays collect drainage beneath the planters.

The 17-by-7.4-inch planters provide a long planting row, while six open drainage holes in each bottom help excess water leave the soil. Removable trays catch that runoff and can be taken away for cleaning, supporting a tidier windowsill or balcony routine. The seven included labels help distinguish plants across the seven boxes. Fasmov describes the plastic as reusable for several seasons, and the lightweight construction makes the set easier to move when rearranging displays.

Skip it if you need a tray that spans the planter’s full 17-inch length; consider another set with a matching tray dimension.

Choose this set for gardeners labeling several herb or flower boxes on a balcony, patio, or garden area. Its trays handle runoff, but their stated 15.7-inch length is shorter than each 17-inch planter.

Listed on Amazon as: Fasmov 7 Pack 17 Inches Flower Window Box Plastic Vegetable Planters with Trays Vegetables Growing Container Garden Flower Plant Pot with 7 Pcs Plant Labels for Balcony, Patio, Garden, Black

#2 · Longest Planter

2. Novelty Countryside Flower Box

• Dimensions: 7.5 x 24 x 6.56 in
• Material: Plastic
• Size: 24 Inch

Best for: Long Classic Window Displays.

Why it ranks #2: Its 24-inch length suits wider windows, while removable drainage plugs allow indoor or outdoor use and built-in feet support placement.

At 24 inches long, the Novelty Countryside box offers a longer planting span than typical compact sill planters, enabling a continuous display of flowers along a window, porch, or walkway. Its matte white finish and classic ridged form provide a traditional look, while removable drainage plugs support indoor or outdoor use.

The 24-by-7.5-by-6.56-inch box provides room for a longer row of plants, and built-in feet lift its base from the supporting surface. Removable drainage plugs let the owner manage water release for the intended placement, making the planter adaptable to indoor or outdoor settings. Its lightweight, fade-resistant plastic blend supports easier movement and continued display, while the box can sit in flower box brackets or stand alone on a porch or deck.

Skip it if you have a short sill under 24 inches; Skelang’s 12-inch planter fits a more compact display.

A good match for buyers arranging a long flower row beneath a window or along a porch. Its plugs and feet offer placement flexibility, but check the full 24-inch length against the sill or bracket before choosing it.

Listed on Amazon as: Root & Vessel 16242 Countryside Flower Box Planter, White, 24-Inch

#3 · Best Tray Set

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3. Tectsia Window Boxes

• Dimensions: 6.7 x 17 x 6 in
• Material: Plastic
• Size: 8 Pack

Best for: Space-Saving Urban Gardening.

Why it ranks #3: Eight 17-inch boxes arrive with eight removable trays; listed features also include drainage holes, lightweight construction, and weather resistance.

The eight-box Tectsia set is aimed at gardeners using vertical space on windows, balconies, or fences, helping create a planted display where floor area is limited. Each light-gray planter measures 17 by 6.7 by 6 inches and includes a removable tray, pairing a narrow rectangular footprint with runoff collection.

Built-in drainage holes let excess water escape, while the removable trays collect runoff and can be taken off for cleaning. The 17-inch planters can form a continuous row across a windowsill or balcony, and the matching light-gray finish keeps the eight-box arrangement visually consistent. The listing also describes greater soil volume as reducing watering frequency, a useful benefit for gardeners maintaining several boxes, though actual watering needs depend on the plants and conditions.

Skip it if you have a ledge less than 6.7 inches deep; a smaller-format planter such as Skelang’s may suit better.

This set suits urban gardeners creating a coordinated row on windowsills, balconies, or fences. Its trays and drainage support easier maintenance, while the 17-by-6.7-inch footprint still requires enough ledge depth.

Listed on Amazon as: 8pcs Rectangle Window Boxes Planters, 17 Inches Long Window Sill Planter Box Outdoor, Plastic Rectangular Window Flower Herb Pots Indoor with Drainage Holes and Trays for Garden Windowsill Light Grey

#4 · Largest Listed Capacity

4. CHUKEMAOYI Window Box Planters

• Dimensions: 16.6 x 7 x 5.9 in
• Material: Plastic
• Size: 16.6 x 7 x 5.9 in

Best for: Large Herb and Flower Displays.

Why it ranks #4: The seven-pack measures 16.6 by 7 by 5.9 inches and lists 708.3 cubic inches of capacity, with saucers included.

The seven-pack’s 16.6-inch length and 5.9-inch depth give each CHUKEMAOYI box room for a broader planting than a compact sill pot, supporting herbs, flowers, foliage, or succulents. Its lightweight plastic construction also makes the boxes easier to reposition around a home or garden as planting needs change.

Each planter measures 16.6 by 7 by 5.9 inches, with a stated 708.3-cubic-inch capacity; that generous rectangular space accommodates multiple plants in one box. Plastic construction is described as reusable across seasons and suitable for exposure to sun, rain, and snow, making it a practical choice for outdoor placement as well as indoor displays. A drainage hole supports water release, and the included saucer can help catch runoff beneath the planter.

Skip it if you have a shallow ledge that cannot accommodate the 7-inch width; choose a narrower planter instead.

Choose this seven-pack for herbs, flowers, or mixed foliage across several indoor or outdoor spots. Its roomy dimensions and weather exposure claims suit varied placements, but measure the available sill depth first because each box is 7 inches wide.

Listed on Amazon as: Window Box Planter,7Pack Plastic Vegetable Flower Planters Boxes

#5 · Largest Pack

5. Lysjtsr Rectangle Planter Boxes

• Dimensions: 16.6 x 7 x 5.9 in
• Material: Polycarbonate (PC)
• Size: 16.6 × 6 × 7 in

Best for: Large Multi-Location Planting Sets.

Why it ranks #5: Twelve boxes offer a coordinated option for multiple windows, with two drainage holes and trays; the listed dimensions are 16.6 by 7 by 5.9 inches.

Twelve stackable 16.6-inch boxes make the Lysjtsr set a strong fit for gardeners furnishing several windowsills, balconies, or patio areas at once. Each plastic planter includes two drainage holes and a tray, combining a roomy rectangular planting space with a way to catch excess water beneath the box.

Each planter measures 16.6 by 7 by 5.9 inches, providing space for flowers or other plants without requiring a large standalone pot. Two drainage holes allow excess water to leave the soil, and the included trays help keep surrounding surfaces tidy. The boxes are described as lightweight and portable, simplifying movement between planting locations; their stackable design also helps conserve storage space when the twelve-piece set is not in use.

Skip it if you need only one or two containers; Skelang’s two-piece set is a smaller purchase quantity.

Choose this set when you need many matching containers for flowers or fruit across several locations. Its trays and stackable form help with watering and storage, but twelve planters make it a better fit for larger planting plans.

Listed on Amazon as: 12Pcs 17Inches Rectangle Planter Box with Drainage Holes and Trays

#6

6. OSMOFUZE Window Box Planter

• Dimensions: 16.9 x 7.5 x 5.5 in
• Material: Plastic
• Size: 6pcs 17in

Best for: Six-Box Tray Gardeners.

Why it ranks #6: Six 17-inch planters include trays and have raised pot feet and drainage holes, a useful combination for indoor or outdoor planting.

Raised pot feet combined with drainage holes are the OSMOFUZE boxes’ practical distinction, promoting airflow beneath each planter while excess water drains toward its tray. The six brick-red, 17-inch containers support indoor or outdoor planting of flowers, vegetables, or strawberries, with a rectangular profile suited to windowsills and balconies.

At about 17 inches long, 7.2 inches wide, and 5.5 inches tall, each box offers a compact row for flowers or edible plants. The drainage holes and raised feet are intended to improve water movement and airflow, while the included tray helps contain runoff around a sill or balcony. Plastic construction is described as suitable for multiple seasons, so the six-piece set can serve a repeated planting arrangement rather than a single display.

Skip it if you are placing boxes on a ledge shallower than 7.2 inches; choose a narrower planter for that surface.

A suitable set for gardeners arranging flowers, vegetables, or strawberries across six indoor or outdoor spots. The feet, holes, and trays support water management, though the 7.2-inch width makes surface depth a key fit consideration.

Listed on Amazon as: Window Box Planter, 6 Pcs 17" Flower Rectangle Planter with Tray, Brick Red

#7

7. Hananojia Window Box Planters

• Dimensions: 17 x 7 x 6.3 in
• Material: Plastic
• Size: 7x17x6.3 in

Best for: Beginner-Friendly Sill Gardening.

Why it ranks #7: The eight-box set measures 17 by 7 by 6.3 inches and includes attached saucers and two drainage holes for managing excess water.

Two drainage holes paired with an attached saucer are the defining feature of Hananojia’s eight-box set, helping excess water drain while catching runoff near a windowsill. The 17-inch rectangular format offers planting space for kitchen herbs or flowers, with a gray finish suited to indoor and outdoor arrangements.

The 17-by-7-by-6.3-inch boxes can hold a row of plants while fitting common windowsill, deck, patio, and porch settings listed by the maker. Two drainage holes let excess water escape, and the attached saucer is intended to help keep a sill clean, which can simplify routine watering for beginners. Plastic construction makes these planters usable indoors or outdoors; the eight-piece quantity also supports repeating the same arrangement across several locations.

Skip it if you have a narrow ledge under 7 inches deep; the 12-inch Skelang planter has a smaller stated width.

A practical pick for beginners planting herbs or flowers on several sills, a deck, or a patio. The attached saucers help manage runoff, while the 17-by-7-inch footprint makes measuring each intended surface important.

Listed on Amazon as: 8pcs Window Box Planter,Rectangle Plastic Vegetable Flower Planters Boxes

#8

8. CAKKVDE Window Box Planters

• Dimensions: 16.5 x 6.9 x 5.7 in
• Material: Plastic
• Size: 16.5"L x 6.9"W x 5.7"H

Best for: Compact Balcony Herb Gardens.

Why it ranks #8: Seven 16.5-inch planters suit windowsills and balconies; listed extras include a waterproof pad, gloves, and a small spade.

The 16.5-by-6.9-by-5.7-inch format gives CAKKVDE’s seven brick-red planters a defined footprint for windowsills, balconies, or patios. That size is described as suitable for herbs, succulents, strawberries, and vegetables, while the included small spade, glove, and waterproof pad add basic planting accessories to the set.

Each lightweight plastic box measures 16.5 inches long and 6.9 inches wide, making its footprint straightforward to assess against a sill or balcony ledge before planting. The stated 5.7-inch height provides depth for the listed herbs, succulents, strawberries, and vegetables. With seven matching containers, gardeners can repeat a planting scheme across several locations. The set also includes a small spade, glove, and waterproof pad, providing accessories for planting and surface protection without sourcing those items separately.

Skip it if you have a ledge shallower than 6.9 inches; select a narrower box such as Skelang’s 12-inch planter.

This set suits balcony or windowsill gardeners who want seven matching boxes and basic planting accessories. Its compact length serves the listed herbs and vegetables, but the nearly 7-inch width means narrow ledges may not accommodate it.

Listed on Amazon as: 7 Pack 17 Inch Rectangular Plastic Window Box Planters(Brick-red)

#9

9. Skelang Rectangular Plant Pots

• Dimensions: 12 x 4 x 4.3 in
• Material: Plastic, Resin
• Size: 12" x 11.2" x 4.3"

Best for: Small Succulent and Herb Displays.

Why it ranks #9: Two 12-inch pots with removable saucers suit smaller displays, but their shorter length offers less planting span than the 17-inch boxes.

A 12-inch length and 4.3-inch height make the two Skelang planters a compact option for small succulent, herb, or flower displays. Each resin-plastic box has a matte finish and a removable saucer that collects excess water, giving indoor growers a way to manage runoff without using a long window box.

The 12-inch top width and 3-inch depth keep each container smaller than the 17-inch options, which can help it fit more limited display spaces. Bottom drainage holes let water flow into the removable saucer, helping avoid mess and supporting drainage during routine watering. The resin-plastic material is described as sturdy, while the matte surface resists scratches, dirt, and fingerprints. Together, these features suit smaller indoor or outdoor arrangements that benefit from a tidy tray.

Skip it if you want a long 17-inch planting row; Fasmov’s seven-box set provides that longer format.

Choose these two planters for modest succulent, herb, or flower arrangements on a sill or tabletop. Their trays help contain runoff, but the 12-inch length limits the planting span compared with full-size boxes.

Listed on Amazon as: Skelang 2 Pcs Rectangular Plant Pot, 12" Watering Plant Container with Drainage Hole, Window Planter Box with Saucer for Succulents, Flowers, Herbss

#10

10. Arcadia PSW Window Box

• Dimensions: 6.3 x 17.65 x 6.3 in
• Material: Plastic
• Size: 17.5" x 7"

Best for: Custom-Drainage Composite Window Boxes.

Why it ranks #10: This 17.5-inch composite box is weather resistant, but it has no drainage holes or tray, so drainage must be planned separately.

A blend of recycled plastic, stone powder, and wood dust gives Arcadia Garden Products’ 17.5-inch box a composite character rather than a plain plastic finish. Its drainage base is intentionally undrilled, so gardeners can choose where to add holes with a standard drill bit for their preferred indoor or outdoor setup.

The 17.5-by-6.3-by-6.3-inch rectangular form provides a substantial planting area for flowers or vegetables, while the 17.5-liter capacity supports a larger soil volume. Because the base has no drainage holes, the planter can be used as supplied where drainage is not wanted or drilled to create outlets. The PSW composite is described as weather resistant, durable, and lighter than most other pots, easing handling during planting and cleaning.

Skip it if you want a ready-draining planter without modifying it; Novelty’s Countryside box includes removable drainage plugs.

This box suits gardeners who value a composite look and want control over drainage placement. Its weather-resistant construction supports indoor or outdoor use, but buyers wanting drainage immediately must drill the base themselves.

Listed on Amazon as: Arcadia Garden Products PSW Pot Collection [17.5 inch] Plastic/Stone/Wood Composite Window Box Rectangular Planter – No Drainage Hole (Drillable), Indoor/Outdoor Pot for Flowers and Vegetables, Taupe