Clay irrigation cones
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44,90 €
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44,90 €
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These 13 cm clay cones have a 2.5 cm opening that accepts the neck of an upturned bottle, and are then pushed into the compost. A 1.5 L bottle will water a pot for 4 to 10 days, and the packs contain 4 to 20 cones.
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The summary
- Dimensions: 13 cm tall, 5 cm wide, with a 2.5 cm opening.
- The reservoir: a long-neck bottle, up to 1.5 L.
- Autonomy: 4 to 10 days with a 1.5 L bottle.
- How many to use: one cone per pot, from 4 for a window box to 20 for a terrace.
- Maintenance: descale with white vinegar and store away from frost.
- On a windy balcony: a 1.5 L bottle can be tied to a stake.
13 cm clay cones that turn a bottle into a water reservoir, sold in batches
The clay irrigation cones are used to water a pot from an upturned bottle, whose long neck fits into their 2.5 cm opening. Each cone is 13 cm tall and is pushed into the compost. With a 1.5 L bottle, watering lasts 4 to 10 days, and the packs contain 4 to 20 cones.
These 13 cm terracotta cones accept the neck of an upturned bottle and are planted into the compost of a pot. The bottle acts as the reservoir, the porous terracotta lets water pass into the soil as it dries out, and sets range from 4 to 20 cones.
🍾 A bottle on a cone
Each cone measures 13 cm high by 5 cm wide, with a six-sided opening of 2.5 cm at the top. The routine goes in this order: you fill the bottle, you cap its neck with the cone, you flip the whole thing in one movement, then you push the clay tip into the potting soil. Long-necked bottles are the ones that sit best in the opening, and plastic bottles are suitable up to 1.5 litres.
📆 How long a bottle lasts
A 1.5 litre bottle provides 4 to 10 days of watering depending on the plant, the heat and the exposure, and a 50 cl bottle lasts roughly three times less. You can therefore adapt the reserve to the season without changing anything in the installation: a small bottle in spring, a large one in summer or before going away. The passage of water follows the tension of the compost, meaning that a drying compost draws water through the clay whereas a damp compost hardly takes any.
The cones suit indoor plants and terrace pots alike. Indoors they are actually more stable, as there is no wind to tip the bottle over, and a 50 cl bottle is often enough for a foliage plant. For a deep pot of around twenty centimetres, the 18 cm watering spikes bury more clay and suit it better than a 13 cm cone.
Secure the large bottles on a windy balcony
A 1.5-litre bottle inverted on a 13 cm cone sits high and top-heavy, and it acts as a lever in the slightest wind. On an exposed balcony, tie the neck to a stake, or use a smaller bottle. A bottle that topples pulls the cone out of the compost, and the clay then breaks at its thinnest point.
Coir fibre around the cones
If you repot before installing the cones, the 50 L bag of coco fibre holds water like a sponge while letting air through around the roots. It can be poured in as it is and packs down easily against the clay tip, which ensures the contact that diffusion needs. The natural version retains more water, while the one blended with perlite drains faster for plants that dislike excess moisture.
🧮 Which pack for which area
Allow one cone for each of your pots up to about twenty centimetres in diameter, since the area moistened around a piece of clay is, as an order of magnitude, 2 times its diameter. In a planter, space the cones about fifteen centimetres apart and place them close to the plants. Then add it all up: one cone per individual pot, plus the number of cones each planter requires. Finally, keep one or two spares, so you can replace a cone broken in midsummer without waiting.
4 cones
A 60 cm planter, or 4 indoor pots each treated with its own bottle.
12 cones
A balcony with a few planters, supplemented by several pots.
16 cones
A well-planted terrace where each pot receives several cones.
20 cones
A large collection of pots, with spare units to replace breakages.
Take a balcony with 3 planters of 60 cm and 4 individual pots. Each planter takes 4 cones spaced about fifteen centimetres apart, making 12 cones, to which you add the 4 cones for the pots: the pack of 16 therefore covers the lot. To fill all the 1.5-litre bottles on this balcony, you prepare 24 litres of water, which you renew every 4 to 10 days depending on the heat and the exposure of the containers.
🧽 Maintenance and winter care
The minerals in tap water are deposited in the pores of the clay, so a cone diffuses less well over the months. The sign is clear: the bottle hardly goes down at all while the compost is drying out. When this happens, soak the cones in a mixture of water and white vinegar, then rinse them thoroughly. Terracotta that is full of water can also crack when it freezes: if your pots stay outside over winter, remove the cones before the frosts, let them dry and store them somewhere dry. The guide watering your plants with an olla explains the same principle using a jar.
Technical specifications
The essentials
- Height
- 13 cmFor 5 cm wide at the top.
- Opening
- 2.5 cm, hexagonalIt accepts the neck of an inverted bottle.
- Bottles
- Long neck, up to 1.5 LRinsed before use, twice if they have contained anything other than water.
- Autonomy
- 4 to 10 daysWith a 1.5 L bottle, depending on the plant and the temperature.
- Bundles
- 4, 12, 16 or 20 conesOne cone per pot, or one every 15 cm or so in a planter.
- Material
- Porous fired clayWater passes through the wall as the compost dries out.
To budget for separately
- Bottles
- Long-necked, up to 1.5 LThese act as the reservoir.
- White vinegar
- For descalingWhen the bottle barely drops any more whilst the compost is drying out.
In the box
- From 4 to 20 clay watering cones, depending on the pack chosen
Dimensions, opening, compatible bottles and run time: product visuals, taken on 07/10/2026. Wetted area: order of magnitude from the agricultural extension services of the universities of Arizona and North Dakota.
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Tapered, fragile clay pieces, packed separately: the tip is the part most vulnerable to damage in transit. Count them and check every one when you open the parcel, before fitting them. The exact delivery costs are shown at checkout.
Frequently asked questions
8 questions
6 key questions, 8 in the detailed view
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