Wooden balcony planter-composter, 50 x 50 cm

Regular price ¥56,100
Regular price Sale price ¥56,100
¥18,700 × 3 with no fees

This unit combines a raised bed in Douglas fir with a stainless steel composter fitted into one corner: you drop your peelings in through the lid, grow in the rest of the box, and the nutrients from the compost feed the planter.

The whole unit fits within a 50 cm square, takes in around 2 kg of food waste per month, and arrives fully assembled with its worms and starter kit.

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The summary

  • What it is: a Douglas wood raised bed with a 15 L stainless steel composter fitted into one corner.
  • What it takes: around 2 kg of food waste per month, added through the composter lid.
  • How much space it needs: 50 x 50 cm footprint, 42 cm tall, 15 kg empty and around 80 kg when filled.
  • What comes with it: the liner, 2 bags of sawdust, a batch of worms, the guide and the instructions.
  • How much effort: adding waste followed by a handful of sawdust, watering the bed, one harvest per year.
  • How to choose: this balcony bed, the kitchen pot, or the tray system.

Wooden raised bed with integrated stainless steel composter, for balconies and terraces

The Balcony combines a Douglas fir raised bed and a stainless steel composter in a single unit, with the composter tucked into one corner of the planter. You add your kitchen scraps through the composter lid, grow your crops in the rest of the bed, and the whole thing fits into 50 cm square, standing on legs in a plastic drip tray. It arrives fully assembled, complete with worms and everything you need to get composting started.

The two sections work together: as the worms break down your peelings, the nutrients from the compost make their way into the soil of the planter, so you won't need to add fertiliser to the plants growing there. The finished compost can be collected roughly once a year through a side hatch at the bottom of the unit, without emptying the planter. This system suits a balcony or terrace, where you can garden in a raised bed whilst processing a portion of your kitchen food waste.

🪵 Douglas fir, stainless steel and retention

The timber used for the crate is untreated Douglas fir, sourced from the Vosges forests, a naturally rot-resistant species that holds up outdoors without any stain or preservative, and which takes on a silver-grey tone over time. It is also an insulating material that protects the worms from the intense heat of summer. The composter is made from stainless steel, a metal that does not rust under constant contact with moist matter and is fully recyclable. The base of the planter is lined and fitted with an overflow, and excess irrigation water drains into the retention tray, which protects the balcony floor and extends the plants' water autonomy slightly.

A lightweight compost to fill the planter

The planter section arrives empty, ready for your compost. The lightweight peat-free compost in 50 L bags is well suited to herbs, salads, or flowers, and its low weight matters on a balcony where every kilogram adds to the load. Ordered with the unit, it lets you plant on the very day of delivery, while the composter receives its first contributions.

🪱 The corner composter

The composter holds approximately 15 L and takes in around 2 kg of food waste per month. Lift the stainless steel lid, add the day's peelings cut into small pieces, then a handful of sawdust, and replace the lid. The worms from the starter kit settle in from the very first addition and turn the material themselves, so there is no need to mix anything. The volume reduces continuously, it takes around 20 kg of peelings to produce 1 kg of compost, so you can keep adding every week.

80 kg over a quarter of a square metre

The unit weighs 15 kg empty, but around 80 kg when in use, once the planter is filled with watered soil and the composter is loaded. Choose its spot before filling it, on a level surface, and check that your balcony can take this load concentrated over half a metre on each side.

🥕 Kitchen scraps

Add your raw or cooked peelings, provided they carry no sauce or dressing, along with coffee and tea grounds, split tea bags, crushed eggshells, mushroom trimmings, and wilted leaves and flowers. Keep out of the composter all meat and fish, pasta, bread and brioche, oil, milk, citrus fruit, garlic, onion, and leek, as these act as vermifuges; also exclude walnut and rhubarb leaves. Lawn clippings have no place here either: the volume exceeds what the composter can handle, and this nitrogen-rich material will rot through lack of oxygen unless mixed with dry matter.

💧 Watering and the seasons

The plants in the planter require regular watering, more frequently during heatwaves, when you can also fill the water reservoir. An olla planter buried in the planter releases water through its walls and extends the time your crops can go between waterings. As for the composter, worm activity slows outside the 15–25 °C range; position the unit against a house wall rather than a balcony railing, as this buffers the cold in winter, and continue adding material during the cold season, just in smaller quantities.

🥬 What grows in the crate

The planter is grown like a raised bed: herbs, salad leaves, strawberries or flowers all establish easily, and you arrange them from tallest at the back to shortest at the front so each plant receives adequate light. Replace each plant as soon as you harvest it, so the planter stays well stocked and produces throughout the season. A seed kit for salad leaves and organic chard lets you sow several successive batches, and the compost made alongside maintains the fertility of the soil from one batch to the next.

🧺 The annual harvest through the hatch

The composter is emptied approximately once a year, via the side hatch provided for this purpose. The compost is ready when you can barely find any worms in it, a sign that decomposition is complete. Allow around 6 months at start-up while the colony multiplies, then 3 months once it has spread throughout the composter. When the composter is full, a compost activator speeds up decomposition by approximately 30% over one month, and the annual accessories pack includes two sachets along with the year's supply of wood shavings. The harvested compost can be added to planters when replanting, or to your other balcony pots.

📦 The kit supplied with the unit

The Balcony arrives pre-assembled from the workshop: the wooden planter box pre-assembled with its lined base and overflow, the stainless steel composter and its lid, all sitting on the drip tray. The starter kit includes 2 bags of woodchip at 400 g each, a batch of composting worms, the composting guide, and a user manual. The unit is made in Alsace, simply place it, fill the planter, and make your first deposit.

Technical specifications

The essentials

Composting capacity
Approximately 2 kg of food waste per monthThe volume reduces continuously: 20 kg of peelings yield roughly 1 kg of compost.
Composter volume
Approximately 15 LIt sits in a corner of the box, closed off by a stainless steel lid.
Footprint
50 x 50 x 42 cmIt weighs 15 kg empty.
Operating weight
Approximately 80 kgCheck that your balcony can take this load before filling the unit.
Materials
Untreated Douglas fir and stainless steelVosges Douglas fir holds up outdoors without stain and weathers to a silver-grey over time.
Compost harvesting
Side hatch, 1 time per yearMature compost is removed from the base of the unit without emptying the planter.

To budget for separately

Planter soil
Lightweight peat-free compost
Seedlings or seeds
Herbs, salad leaves, flowers

In the box

  • 1 pre-assembled Douglas fir raised bed with lined base and overflow
  • 1 stainless steel composter and its lid
  • 1 plastic drip tray
  • 2 bags of sawdust of 400 g
  • 1 batch of compost worms
  • 1 composting guide and 1 instruction leaflet

Materials, dimensions, empty and operating weight, volume, monthly capacity and kit composition: manufacturer's figures from Agrotonome, recorded on 07/10/2026.

Three ways to compost at home

Balcony vegetable planter, kitchen pot, or stacking tray bin

Composting and growing in the same spot? The Balcony is the only one of the three to include a planter; the other two produce compost that you take to your pots.

Composting volume (L)LocationMaterialIntegrated planterWorm tea tapStated capacityPrice
Indoor terracotta worm composterYour choice8 LWork surfaceClay NoNo1 to 2 people, 3 to 4 with a second ring¥45,100
Wormery with 2 stackable trays and a tapYour choice28 LOn the floor, indoors or outdoors under shelterRecycled plasticNoYesUp to 6 people¥25,400
Recommended
Wooden balcony planter-composter, 50 x 50 cmYour choice		15 LBalcony or terraceDouglas fir and stainless steelYesNo2 kg of organic waste per month¥56,100
Indoor terracotta worm composter
Composting volume (L)8 L
LocationWork surface
MaterialClay
Integrated planterNo
Worm tea tapNo
Stated capacity1 to 2 people, 3 to 4 with a second ring
Wormery with 2 stackable trays and a tap
Composting volume (L)28 L
LocationOn the floor, indoors or outdoors under shelter
MaterialRecycled plastic
Integrated planterNo
Worm tea tapYes
Stated capacityUp to 6 people
Wooden balcony planter-composter, 50 x 50 cmRecommended
Composting volume (L)15 L
LocationBalcony or terrace
MaterialDouglas fir and stainless steel
Integrated planterYes
Worm tea tapNo
Stated capacity2 kg of organic waste per month

Volumes, materials, equipment and capacities recorded from the manufacturers' product pages on 07/10/2026. For the tray tank, the volume given is that of the 2 trays supplied.

Estimate your
delivery time

The unit is delivered assembled, weighing 15 kg with dimensions of 50 x 50 x 42 cm: shipping is charged on bulk as much as on weight. The live worm kit travels with the unit and follows the same lead time. The exact delivery costs are shown at checkout once your address has been entered.

Frequently asked questions

12 questions

6 key questions, 12 in the detailed view

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