Best Planter Box For Window: Compare 10 Styles

#1 · Best Overall

1. Mayne Fairfield Window Box

• Dimensions D x W x H: 11"D x 36"W x 10.8"H
• Material: Plastic
• Size: 36in

Best for: Long self-watering window box.

Why it ranks #1: Its 36-inch length, 3-gallon capacity, built-in self-watering, steel mount brackets, and overflow drainage make it a complete window-box option.

A built-in self-watering system is the Fairfield’s defining advantage, helping make a 36-inch window box easier to manage between watering sessions. Its double-wall construction, overflow drainage, and included steel mounting brackets bring a practical combination of water management and window installation to a long, traditional planter.

The 36-inch polyethylene box holds three gallons and uses built-in self-watering technology, which supports a longer planting run with a water reservoir integrated into the planter. Built-in overflow drainage helps excess water escape, while the included steel brackets provide mounting hardware for window placement. High-impact, chemical, and weather resistance support four-season outdoor use with little winter preparation. Its length and 10.8-inch height mean it suits windows with room for a substantial rectangular box.

Skip it if you have a short sill and want a smaller box; Novelty’s Root & Vessel Countryside 24-inch planter takes up less length.

Pick the Fairfield for a broad window where self-watering and included steel brackets simplify installation and routine care. Measure the mounting area carefully: its 36-inch length and 10.8-inch height call for more room than a compact sill planter.

Listed on Amazon as: Mayne Fairfield 36in Self-Watering Rectangular Window Box Planter, White

#2 · Best Rail Mount

2. Karlliu Metal Window Boxes

• Dimensions D x W x H: 7"D x 24"W x 5.5"H
• Material: Coco fiber, Metal
• Size: 24 Inch

Best for: Metal railing planter set.

Why it ranks #2: Four 24-inch metal baskets come with adjustable brackets and coco liners, suiting buyers who want a hanging planter with breathable lining.

Four 24-inch metal baskets arrive with adjustable brackets and coco-fiber liners, giving you a coordinated way to hang plants along a windowsill, porch, or fence. The breathable, water-retentive liners support planting, while the black Art Deco pattern adds a defined decorative look to outdoor spaces.

Carbon steel baskets with a rust-resistant powder coating suit year-round planting, and weather-resistant construction helps them handle outdoor placement. Each 24-by-7-by-5.5-inch box includes a coco liner, so you can plant directly without sourcing a separate lining material. Drainage holes help excess water escape, while the adjustable brackets support hanging installation. The set is listed with a 25-pound capacity; account for that limit when choosing soil and plants, especially across multiple filled boxes.

Skip it if you need a compact box rather than a 24-inch hanging basket; Arcadia Garden Products’ 17.5-inch PSW box is shorter.

Choose this four-box set for outdoor windows, porches, or fences where hanging installation and coco liners suit your planting plan. Its 24-inch length and 25-pound listed capacity are important boundaries for available space and filled-box load.

Listed on Amazon as: 4 Pack 24 Inch Window Boxes Planters for Outdoor Plants Railing Planter Box with Adjustable Brackets for Windowsill Porch Fence Patio Hanging Flower Coco Baskets for Outside Decoration – Black

#3 · Best 36-Inch Set

3. Veradek Brixton Window Box

• Dimensions D x W x H: 36"D x 11"W x 11"H
• Material: Polypropylene Plastic
• Size: 11"H x 11"W x 36"L – 2 Pack

Best for: Large all-weather window pair.

Why it ranks #3: This two-pack offers 36-inch-long polypropylene boxes with UV- and weather-resistant features for buyers furnishing multiple outdoor windows.

A two-pack of 36-inch planters gives broad windows a matched pair, with high-grade recycled plastic rated as impact, scratch, and UV resistant. The Brixton’s estate-inspired rectangular styling brings a traditional look, while its substantial dimensions support a longer outdoor planting display.

Each planter measures 36 inches long externally, with interior dimensions of 31.75 by 6.75 by 7.5 inches; use the interior measurements to plan plant and soil space. The recycled polypropylene construction is described as weather and UV resistant, supporting outdoor placement through sun exposure. Two boxes allow a coordinated installation across a broad window or separate locations. At 11 inches high externally, each needs more vertical clearance than a shallow sill planter, and no additional components are included.

Skip it if you need mounting hardware in the package; Mayne’s Fairfield 36-inch planter includes steel mount brackets.

Choose the Brixton pair for broad outdoor windows where a matched traditional look and weather-resistant material fit the plan. Allow for its 11-inch exterior height and arrange mounting separately, since no additional components are included.

Listed on Amazon as: Veradek Brixton Series Window Box Planter – Rectangular Outdoor Planter

#4 · Best Drainage Plugs

4. Novelty Countryside Flower Box

• Dimensions D x W x H: 7.5"D x 24"W x 6.56"H
• Material: Plastic
• Size: 24 Inch

Best for: Classic plug-drainage planter.

Why it ranks #4: The 24-inch plastic box has removable drainage plugs and built-in feet, letting buyers adapt it for indoor or outdoor display.

Removable drainage plugs let you adapt this 24-inch Countryside box for indoor or outdoor planting, controlling whether water drains from the base. Its lightweight plastic body has a classic matte finish, subtle wrap-around band, and ridged construction for a traditional window-box appearance.

The 24-by-7.5-by-6.56-inch planter can sit in flower-box brackets or stand alone on a porch or deck, giving you flexibility in placement. Removable plugs let you open drainage for outdoor use or retain them when the planting setup calls for a closed base indoors. Built-in feet support airflow beneath the box, while fade-resistant, tough plastic and a matte finish support routine use. Its 9.5-quart capacity accommodates a moderate-length arrangement without requiring a 36-inch mounting space.

Skip it if you need a 36-inch self-watering planter; Mayne’s Fairfield 36-inch box includes built-in self-watering technology.

This fits buyers who want a traditional 24-inch planter for brackets, porches, or decks, with drainage they can adjust. Its moderate length and lack of built-in self-watering suit hands-on watering rather than a longer reservoir-based setup.

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

#5 · Best Windowsill Set

5. Hananojia Window Box Set

• Dimensions D x W x H: 17"D x 7"W x 6.3"H
• Material: Plastic
• Size: 7x17x6.3 in

Best for: Windowsill tray planter set.

Why it ranks #5: Eight 17-inch planters include attached trays and two drainage holes apiece, a useful format for several indoor or outdoor spots.

Two drainage holes paired with an attached saucer make this 17-inch planter a practical option for catching runoff on a windowsill. The eight-piece set supplies black plastic boxes sized for flowers or vegetables, with the tray helping keep excess water from leaking onto the surface below.

Each box measures 17 by 7 by 6.3 inches, a rectangular footprint suited to windowsills, desks, patios, or porches according to the product information. Drainage holes let excess water leave the planting area, and the attached saucer catches runoff to help protect the supporting surface. The plastic construction keeps each listed planter lightweight at eight ounces. This arrangement favors smaller plantings and tidy indoor use, rather than a single continuous long window-box installation.

Skip it if you need a single long box for a broad window; Mayne’s Fairfield 36-inch self-watering planter spans more length.

Consider this set for several small windowsill or desk plantings where drainage and runoff control matter. Each box is only 17 inches long and has a listed three-pound capacity, so plan around its compact scale.

Listed on Amazon as: 8pcs Window Box Planter,17 Inches Flower Window Boxes,Rectangle Planters Box with Drainage Holes and Trays, Plastic Vegetable Planters for Windowsill Patio Garden Home Decor Porch Yard (Black)

#6

6. Arcadia PSW Window Box

• Dimensions D x W x H: 6.3"D x 17.65"W x 6.3"H
• Material: Plastic
• Size: 17.5" x 7"

Best for: Custom-drainage lightweight box.

Why it ranks #6: Its 17.5-inch recycled-material composite is weather resistant and lightweight; drainage holes are absent but can be added with a drill.

Its drainage-free, drillable base lets you decide whether this 17.5-inch window box needs drainage holes, a useful choice when matching planting and placement needs. The PSW composite blends recycled plastic, stone powder, and wood dust in a taupe traditional form suitable for indoor or outdoor use.

At 17.5 inches wide and 6.3 inches deep and tall, the box fits smaller window areas than long multi-foot planters. It arrives without drainage holes, but the supplied product facts say holes can be added with a standard drill bit without damaging the pot’s integrity; that lets you tailor drainage before planting. Its recycled plastic, stone powder, and wood-dust blend is described as weather resistant and half the weight of most other pots, easing handling and cleaning.

Skip it if you want drainage ready without drilling; Novelty’s Root & Vessel Countryside 24-inch box includes removable drainage plugs.

Choose this box if you want a manageable-size composite planter and prefer to decide on drainage yourself. Its undrilled base requires a drilling step for plants needing drainage, so it is less ready-to-plant than a box with existing holes.

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

#7

7. Novelty Poly-Pro Flower Box

• Dimensions D x W x H: 8"D x 29.75"W x 5"H
• Material: Plastic
• Size: 30-Inch

Best for: Long plastic liner box.

Why it ranks #7: The 29.75-inch recyclable plastic box has built-in feet and a drainage hole, and can also serve as a liner inside another planter.

At nearly 30 inches long, this ridged Poly-Pro box can serve either as a standalone flower planter or as a protective liner inside another window box. Its lightweight, recyclable plastic construction makes it easier to reposition than a heavier container, while built-in feet allow airflow beneath it.

The 29.75-by-8-by-5-inch shape gives flowers a long, shallow planting area suited to window-box arrangements. Ridged, scalloped sides add sturdiness, and built-in feet raise the base to provide airflow underneath. Use it on its own or place it inside another planter as a protective liner, adapting the same box to different display setups. Its two-gallon-plus capacity and drainage hole support planting, while the lightweight plastic is fade resistant and recyclable.

Skip it if you need a deeper, taller window box; Veradek’s Brixton 36-inch planter has an 11-inch exterior height.

This is a useful choice for a long, shallow arrangement or as a removable liner inside another planter. Its five-inch height limits the profile, so consider plant root space and the depth of your existing box.

Listed on Amazon as: Root & Vessel Poly-Pro Plastic Flower Box Planter, Black, 30-Inch

#8

8. CHUKEMAOYI Window Planters

• Dimensions D x W x H: 16.6"D x 7"W x 5.9"H
• Material: Plastic
• Size: 16.6 x 7 x 5.9 in

Best for: Seven-box mixed planting set.

Why it ranks #8: Seven lightweight plastic planters measure 16.6 by 7 by 5.9 inches and include saucers, providing several compact boxes for home use.

Seven lightweight plastic boxes measuring 16.6 inches long give you multiple containers for distributing herbs, flowers, or foliage across a home or garden. The rectangular shape provides a roomy footprint for small plantings, while included saucers pair with drainage holes for handling runoff.

Each 16.6-by-7-by-5.9-inch planter offers space for herbs, flowers, succulents, and other listed plant types, making the set useful when you want several separate arrangements. Recyclable plastic is described as lightweight and sturdy, with exposure to sun, rain, and snow supported by the product information. Drainage holes help excess water leave the box, and the included saucers provide a companion piece for catching it. The seven-box count suits distributing plants rather than one continuous display.

Skip it if you want one long window-box run; Veradek’s Brixton Series 36-inch planter provides a longer single-box format.

Choose this set when you need multiple separate containers for herbs, flowers, or foliage around a home or garden. Its individual 16.6-inch boxes suit distributed displays, not a single uninterrupted window arrangement.

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

#9

9. LOCONHA Window Planters

• Dimensions D x W x H: 16.6"D x 7"W x 5.9"H
• Material: Plastic
• Size: L16.6 x W7 x H5.9 in

Best for: Brick-red multi-box set.

Why it ranks #9: This seven-pack includes saucers and drainage holes, with 16.6-by-7-by-5.9-inch plastic boxes for buyers needing multiple small planters.

Seven brick-red planters in a 16.6-inch size offer a coordinated way to spread small plantings across windowsills or other spaces. Their recyclable plastic construction is described as lightweight and weather-tolerant, while smooth surfaces make routine cleaning straightforward after indoor or outdoor use.

Each box measures 16.6 by 7 by 5.9 inches, a compact rectangular format for herbs, flowers, or other small plantings. The seven-piece set gives you several containers to arrange separately, rather than one long continuous box. Product information describes the plastic as able to withstand sun, rain, and snow without discoloration, supporting outdoor placement. Drainage holes address water escape, and the included saucers provide a matching runoff-catching component for tidier surfaces.

Skip it if you need a single planter spanning a wide window; Veradek’s Brixton Series 36-inch box offers a longer format.

This set fits buyers arranging multiple compact plantings and wanting a brick-red accent with easy-clean surfaces. Its 16.6-inch individual boxes are better for distributed displays than covering a broad window in one piece.

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

#10

10. windiy Wooden Planter Box

• Dimensions D x W x H: 17.3"D x 3.9"W x 3.9"H
• Material: Pine Wood
• Size: Medium

Best for: Rustic narrow centerpiece planter.

Why it ranks #10: The 17.3-inch pine box is a decorative, narrow option with a removable plastic liner, but its 3.9-inch width limits planting space.

A removable plastic liner sets this 17.3-inch pine-wood planter apart, keeping the rustic outer box separate from the planting container for easier maintenance. Its slim 3.9-inch width and brown farmhouse look suit succulents, small plants, or decorative arrangements on a window ledge or table.

The pine-wood box measures 17.3 inches long by 3.9 inches wide and tall, creating a narrow profile for small plants, air plants, or cacti listed in the product description. Its removable plastic liner can be lifted out for planting and cleanup, helping separate care of the plants from the wooden exterior. The lightweight construction supports repositioning between display spots. This is a decorative, shallow format, so it is better suited to compact arrangements than deep-rooted or large plantings.

Skip it if you need a deeper box for larger plantings; Mayne’s Fairfield 36-inch planter is 10.8 inches tall.

Choose this narrow wooden box for succulents or small decorative arrangements where farmhouse styling and a removable liner matter. Its shallow dimensions limit root room, making it a poor match for larger plants.

Listed on Amazon as: Winlyn Rustic Wooden Planter Box 17.3" L x 3.9" W x 3.9" H Brown Rectangular Planter Decorative Wood Box with Removable Plastic Liner Window Box for Farmhouse Wedding Home Garden Table Centerpiece.