The best self-watering planters, compared.
Top pick: Bamworld pots, set of 6 sizes – Highest score in this comparison, 9.3 out of 10, from 135 amazon.co.uk reviews. Best value: yarlung 12.7 cm pots, set of 6 – About £16.99 for six nested pots, with 4.3 from 650 reviews, against about £45.87 for one balcony trough. Updated October 2026.
A self-watering planter is a pot or trough with a reservoir and a path for water to reach the compost, usually a cotton or fabric wick, sometimes a liner and a level indicator. Split them by job: a short sill box, a small pot, a 25 cm pot, or an 80 cm balcony trough. The Royal Horticultural Society treats a built-in reservoir as a way to grow plants that tolerate steady moisture, and warns that small tanks run dry and that waterlogging causes rot. A visible water level, a base that stays on, and an overflow for rain matter more than a seller’s day-count. Cacti, succulents, snake plant and ZZ plants need to dry. Which herbs suit a short box is in the [windowsill herbs guide](/hub/plant-accessories/self-watering-planter/sub/self-watering-planter-windowsill-herbs). UK buyers use them for kitchen herbs, thirsty houseplants, balcony boxes and, less often, hanging baskets or a small trellis bed.
A self-watering planter is a pot or trough with a reservoir and a path for water to reach the compost, usually a cotton or fabric wick, sometimes a liner and a level indicator.
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Personal buying guide
Question 1 of 2
Where will it sit?
The Bamworld set is six white tapered pots from 12.7 cm to 20.3 cm, with saucers and drainage holes, at £16.99. amazon.co.uk shows 4.7 from 135 reviews. The bullets mention a reservoir and do not describe a water window or a float. Of 50 reviews stored in the saved listing, 15 are from the United Kingdom; the rest include Ireland, Sweden and Germany. UK comments praise the look and a size run for thirsty plants, including an Aglaonema, and one calls assembly easy. The bottom section can be loose, and the stored UK texts do not explain how the wick or reservoir actually works. The specification says indoor and the title says an outdoor windowsill. A set of different sizes helps if each plant needs its own pot, and it is a weak buy if you wanted six identical herb boxes with a window you can read.
Pros
Cons
Best for: A set of different indoor pot sizes when a visible gauge is not the reason you are buying.
Less suitable: Six matching sill boxes, or a buyer who is reading all 135 reviews as British.
Specifications
Common questions
Are all six pots the same size?
No. The title lists 12.7, 14, 15.2, 16.5, 17.8 and 20.3 cm.
Is there a water-level window?
The listing does not describe a window or a float. It does list a reservoir, saucers and drainage holes.
Are the 135 reviews all from the UK?
No. Of 50 reviews stored in the saved listing, 15 are from the United Kingdom. The rest include Ireland, Sweden and Germany.
The WSMKSZ set is three plastic pots, each 25 × 25 × 23.5 cm, with a cotton wick, a detachable saucer and a watering lip. amazon.co.uk shows 4.7 from 101 reviews at £25.99, and all 50 stored reviews are from the United Kingdom. Reviewers call the size useful for mid-size plants, including a rubber plant, and one describes light top-watering of a jasmine while the roots grew down. The seller claims the water lasts 9–12 days; that is a seller line, and one UK review said the pots were less effective in hot weather. Other complaints are unclear instructions, a string that did not wet the plant, and leaking when the pot was carried at a slight angle. There is no water window, so you use the watering lip rather than a gauge. A 25 cm pot is a houseplant job, not a row of supermarket herbs on an 11.5 cm-wide box.
Pros
Cons
Best for: One or three mid-size indoor plants that like moisture, in pots about 25 cm across.
Less suitable: A narrow herb sill, a succulent, or anyone who needs to carry a full pot without a drip.
Specifications
Common questions
How long does the seller say the water lasts?
The listing claims 9–12 days. That is a seller line. One UK review said it was less effective in hot weather.
Does the saucer come off?
The listing includes a detachable saucer and a watering lip, plus drainage holes into that tray.
What failed in UK reviews?
Among 50 UK reviews, complaints include unclear instructions, a string that did not wet the plant, and leaking when the pot was carried at an angle.
The Zymuegist set is three brown ABS boxes, 27 × 11.5 × 14 cm and 960 g together, with a fabric wick, a water window and a hidden tray. amazon.co.uk shows 4.7 from 35 reviews at £15.99, and the listing says no assembly is required. Eight of the 13 reviews stored here are from the United Kingdom; the other five are from Germany, so the star line is not a pure UK sample. UK comments say the fabric strips draw water and that window herbs do not dry out unexpectedly, though one buyer was not yet sure the watering worked. German comments about a less premium finish are not British opinion. The page says indoor and outdoor and does not give a frost temperature. Next to Fayavoo’s six boxes and 343 reviews, this is the cheaper three-pack with a much thinner file.
Pros
Cons
Best for: Three matching brown herb boxes when about £15.99 matters more than a large review file.
Less suitable: Anyone who wants several hundred UK reviews, or a frost-rated outdoor box.
Specifications
Common questions
Is assembly required?
The listing says the three boxes are ready to use and no assembly is required.
Can they go outdoors?
The listing says indoor and outdoor. It does not give a frost temperature.
How many of the stored reviews are from the UK?
Eight of the 13 stored reviews are from the United Kingdom. The other five are from Germany.
The Lechuza BALCONERA Color 80, model 15683, is a slate polypropylene trough of about 79 × 19 × 19 cm, weighing 4.58 kg, with a liner, a level indicator and a drain plug. amazon.co.uk shows 4.6 from 2,273 reviews at £45.87, and all 50 reviews stored in this capture are from the United Kingdom. Lechuza’s UK catalogue lists a 5 litre reservoir and 12 litres of plant volume for this article number; Amazon’s “12 litres” is that plant volume, not a 12 litre tank. UK reviewers mention wheatgrass refilled every 4–5 days, gravel in the box, and liners that lift out, and they also say the balcony brackets are a separate purchase. The indicator sits below the printed minimum when the tank is empty, which is confusing on day one, and the shell scratches where it sits on brackets. A 100–120 V line on the listing is not an electrical specification. It is the top pick here for one long balcony trough, because the reservoir, the indicator and the drain are documented and the review file is far larger than the rest. It is a poor match for a 27 cm herb box.
Pros
Cons
Best for: One balcony or long windowsill trough when you want a documented reservoir, an indicator and a drain plug.
Less suitable: A single 27 cm herb box, a cactus, or a railing you have not had checked for a wet trough.
Specifications
Common questions
Do balcony brackets come in the box?
UK reviews say the straps or brackets are a separate purchase. The included-components line is the trough itself.
Does it have a drain?
The bullets say a drainage system and plug for indoor and outdoor planting, and the specification says it has drainage.
What is the 12 litre figure?
Amazon lists capacity as 12 litres. Lechuza’s UK catalogue lists art. 15683 with a 5 litre reservoir and 12 litres of plant volume. The voltage line on Amazon is not a real electrical spec.
The Fayavoo set is six ABS windowsill boxes, each 26.5 × 11.5 × 14 cm, with a cotton wick, a water window and a hidden tray. amazon.co.uk shows 4.6 from 343 reviews at £29.99, and the listing says assembly is not required. All 50 reviews stored in this capture are from the United Kingdom, and they use the boxes for kitchen herbs, including supermarket plants split into compost. Reviewers praise the window and say two herb plants fit, with basil cropping well. The repeated complaints are roots growing through the bottom into the water, and a base narrower than the top that tipped when a cat pushed it. One reviewer lifted the wick so it sat up in the compost. The title says outdoor and indoor, while the specification says indoor, and there is no frost figure.
Pros
Cons
Best for: A kitchen sill where you want several herb boxes and a water level you can see.
Less suitable: A plant that must dry out, or a sill where a cat can knock a top-heavy box.
Specifications
Common questions
Do I have to assemble them?
The listing says assembly is not required. Each box is a planter with a drainage hole and a hidden tray.
Will they sit on a windowsill?
The description calls them window-sill pots, 26.5 cm long and 11.5 cm wide. UK reviews use them for kitchen herbs.
What do UK reviewers complain about?
In the 50 UK reviews stored, roots growing into the water and a base narrower than the top, which tipped when a cat pushed it, are the repeated complaints.
The INTERWARM set is nine clear plastic pots in three sizes, with cotton wicks, at £22.69. The bullets give about 10 × 8 cm, 13 × 11 cm and 16 × 15 cm, three of each. A 10 × 10 × 90 cm specification line conflicts with those sizes and is not the pot height. amazon.co.uk shows 4.5 from 2 reviews, and both stored reviews are from France, so this capture has no United Kingdom comment. One French review mentions orchids, a drop in the reservoir after 24 hours, and no instruction leaflet. The specification says there is no drainage hole, so water sits in the clear reservoir and moves up the rope. A clear wall lets you see the level, which a sticking float does not, and two reviews from France are not a UK sample. Indoor and outdoor is stated without a frost temperature.
Pros
Cons
Best for: Several clear indoor pots if you will not treat the two French reviews as British experience.
Less suitable: A buyer who needs UK reviews, an overflow for rain, or one 25 cm plant.
Specifications
Common questions
What sizes are in the box?
The bullets say three styles, three of each: about 10 × 8 cm, 13 × 11 cm and 16 × 15 cm. The 90 cm height in the specification block conflicts with that.
Is there a drainage hole?
The specification says no drainage. Water sits in the clear reservoir and moves up the cotton rope.
Are the two reviews from the UK?
No. Both stored reviews are from France. One mentions orchids and a drop in the reservoir after 24 hours, and the lack of a leaflet.
The Skelang set is two white polypropylene troughs, 39.7 × 13 × 13.3 cm, with a water-level indicator and a drainage hole closed by a rubber plug. amazon.co.uk shows 4.4 from 104 reviews at £31.66, and all 22 stored reviews are from the United Kingdom. Reviewers use them for chillies and for herbs in a south-facing bay, and one says a large store of water helped through a holiday of a few weeks. The inner depth is 9.4 cm; a “9.4 centilitres” line copies that depth and is not the volume. Complaints are a liner that is hard to lift because there are no handles, a sticky gauge, herbs drowned when the measure failed, and mould when the soil stayed wet. You open the drainage hole with a tool. At nearly 40 cm long, this is a bay-window trough, and the specification says indoor.
Pros
Cons
Best for: A long indoor sill or bay window for herbs and chillies that like moisture, if you will check the tank when the gauge sticks.
Less suitable: A short 27 cm sill, outdoor frost, or a plant that must dry between waterings.
Specifications
Common questions
Can I see how much water is left?
The listing includes a water-level indicator. One UK review says a gauge was sticky, and another says the measure did not work.
Is it for outdoors?
The specification block says indoor. The listing does not give a frost temperature.
Why do reviews mention lifting?
UK reviewers say the inner planter is hard to lift out because there are no handles on the ends.
The yarlung set is six nested plastic pots, 12.7 × 12.7 × 10.9 cm, with the inner pot on legs and a float, at £16.99. amazon.co.uk shows 4.3 from 650 reviews, the second-largest file in this set after the Lechuza trough. Of 50 stored reviews, 35 are from the United Kingdom. Reviewers use them for anthuriums and alocasias in pon, for orchids, and for herbs on a kitchen ledge. The specification says there is no drainage hole, so the water stays in the outer pot. Several UK reviews say the float sticks, bends, or shows the wrong level until you shake it, and one reports a missing indicator bottom and a cracked inner pot. A 32.3 cm dimension line conflicts with the 12.7 cm title and is not the pot size. It is the best value here when you need several small indoor pots and can check a sticky float by eye, at £16.99 for six rather than £45.87 for one balcony trough.
Pros
Cons
Best for: Several small indoor plants, including growers using pon or leca, if you will check a sticky float by looking in the pot.
Less suitable: An outdoor pot that needs an overflow, or a cactus, succulent, snake plant or ZZ plant.
Specifications
Common questions
Does water drain onto the table?
The specification says it has no drainage hole. The description says the inner pot sits on legs above the stored water.
How reliable is the level indicator?
Several UK reviews say the float sticks, bends, or shows the wrong level until you shake it. One review reports a missing indicator bottom and a cracked inner pot.
What size are they?
The title and the item-dimensions line say about 12.7 × 12.7 × 10.9 cm. A separate 32.3 cm line conflicts with that and is not the pot size.
The Yimomoyi set is six white plastic pots of about 12.5 cm, with clear basins and cotton wicks, at £12.99. amazon.co.uk shows 4.3 from 264 reviews. UK reviewers say you can see the water, and that the wick works with semi-pon if a mesh stops the substrate falling through. They also say the basin does not clip and the clear base falls off when you move a full pot, so you lift from the bottom. The pour gap is small, and one buyer found only one pot in the pack seated properly. Two dimension lines disagree, 12.5 × 12.5 × 14 cm and 12.5 × 8 × 13.5 cm, and the specification says indoor while the bullets say indoor and outdoor. At six pots for £12.99 it is the lowest price per small pot in this set, with that loose base as the limit.
Pros
Cons
Best for: Several small indoor plants if you will lift each pot from the basin, not by the rim.
Less suitable: Anyone who carries pots across a room, or a plant that needs a 25 cm pot.
Specifications
Common questions
Does the water base lock on?
The listing calls the basin detachable. UK reviews say it does not clip and can fall off when you move a full pot.
What is included?
Six 12.5 cm pots, six transparent basins and six cotton ropes. Plants are not included.
Can I see the water?
The base is transparent, and the listing says you refill through a lip without opening the pot.
The HENTPTD listing is two black polypropylene hanging planters, 25 × 25 × 65 cm including the chain, with a twist-on reservoir, a wick and a coated chain. amazon.co.uk shows 4.0 from 2 reviews at £12.95, and both stored reviews are from the United Kingdom. Those reviewers call the plastic solid for the price and say the wick seemed to work, and they would not confirm that the chain coating survives a British winter. A seller line of 7–14 days was not checked by the reviewer who mentioned it. You look at the tray to see the water, and you hang a wet pot, so the hook has to take the weight. Two reviews are too few to treat 4.0 as a settled rating. It is the lowest shelf price in this set, for a hanging pair, which is a different job from a windowsill box.
Pros
Cons
Best for: A buyer who specifically wants two hanging baskets and accepts a two-review file.
Less suitable: A windowsill herb row, or anyone choosing on star rating alone.
Specifications
Common questions
How many reviews are there?
The listing shows 4.0 from 2 reviews. Both stored reviews are from the United Kingdom.
Will the chains rust outside?
The listing says the iron chains have an anti-rust coating. One UK reviewer would not confirm that after a British winter. It is untested in these two reviews.
Does the seller’s 7–14 day claim come from a test?
It is a seller line. The UK reviewer who described the wick had not checked that number.
The MQJIAZHI listing is a raised bed with a trellis, 40 × 30 × 142 cm and 3.15 kg, sold with cotton ropes. amazon.co.uk shows 3.7 from 66 reviews at £13.99, the lowest star line in this set. Assembly is required. Of 35 stored reviews, 29 are from the United Kingdom, and they say metal rods often do not enter the holes, that the coating had to be cut, and that wheels do not fit or fall off. Some builds clicked together and felt sturdy; others call it precarious once filled with soil, or more like a plastic crate than the metal trellis in the picture. A printed capacity of 1.67 cubic metres is on the listing and is not credible for a 40 × 30 cm footprint, so it is not the soil volume. Cotton ropes do not turn a poorly fitting trellis kit into a herb box.
Pros
Cons
Best for: A buyer who wants a small trellis bed and will return it if the rods will not go in.
Less suitable: A kitchen herb sill, or anyone treating the lowest price as the best planter in this set.
Specifications
Common questions
Is this a windowsill planter?
No. It is a raised bed with a trellis, listed at 40 × 30 × 142 cm, for climbing plants and vegetables.
Does it need assembly?
Yes. UK reviews say metal rods often do not enter the holes and that wheels do not fit. Some buyers cut the coating or gave up.
Is the 1.67 cubic metre figure the soil volume?
That capacity line is on the listing. It is not credible for a 40 × 30 cm footprint, so it is not shown as the soil volume.
The JOLANG listing is one ABS windowsill box, 27 × 11.5 × 14.2 cm and 880 g, with a cotton wick, a clear water window and drainage holes. At £14.99 it is a single box, and the stored amazon.co.uk file has no customer-review line and no star rating. The page says indoor and outdoor use and gives no frost temperature, so that outdoor line is not a winter rating. Assembly is not stated. Without UK reviews you cannot tell whether the wick draws or whether the window stays readable after a few weeks. It matches one herb row on a narrow sill if you are buying from the specification alone.
Pros
Cons
Best for: One windowsill herb row when you want a water window and you can accept a listing with no reviews in this capture.
Less suitable: Anyone who wants UK review evidence before buying, or a pot with a stated frost limit.
Specifications
Common questions
Does this box show the water level?
The listing describes a clear water-level window and a water inlet, so you can refill without disturbing the plant.
Is it one pot or a set?
The listing is a single windowsill box. Piece count is 1 and the weight is 880 g.
Are there any reviews on the stored listing?
The saved listing has no customer-review line and no review text.
Twelve self-watering planters on amazon.co.uk were compared from the listing facts in this set. The figure beside each pot is the amazon.co.uk star average converted to a ten-point scale. A thin review file, or stored reviews that are not from the United Kingdom, is described on the card and is not treated as a larger sample than it is. Price sets the best-value badge. The top pick is the balcony trough with the largest review file and a documented reservoir, indicator and drain, not the highest star percentage. There was no lab test.
Job and size
25%A 12.5 cm six-pack, a 27 cm sill box, a 25 cm pot and an 80 cm trough are different jobs. Credit depends on whether the listed size matches the plant, not on the lowest shelf price.
Water level you can see
20%A window, a clear reservoir or a float you can check scores higher than a reservoir the listing only mentions. A float that stored UK reviews say sticks is recorded as that limit.
Base and overflow
20%A basin that stays on, and a drain or plug when the pot may see rain, matter. A bullet that only says indoor and outdoor is not a frost rating.
Plant fit
15%Thirsty herbs and many foliage plants can use a wick. Cacti, succulents, snake plant and ZZ plants need to dry, so a permanent wick is a mismatch.
Review evidence
20%The amazon.co.uk star line is the starting point. A larger United Kingdom review count adds confidence. Two reviews, a file with no review line, and French or German texts are not read as a British sample.
Start with the job and the size, then with whether you can see the water and whether the base stays on. Review volume decides how much weight a star line deserves. The notes below follow that order for these twelve listings.
A self-watering planter on amazon.co.uk is a pot or trough with a reservoir and a path for water to reach the compost, usually a cotton or fabric wick, sometimes a liner and an indicator as on the Lechuza BALCONERA Color 80. UK buyers use them for kitchen herbs, thirsty houseplants, balcony boxes and, less often, hanging baskets or a small trellis bed.
Seller lines of 7–14 days or 9–12 days were not measured here. One UK review said hot weather shortened the WSMKSZ claim. Small tanks run dry.
The MQJIAZHI bed is 40 × 30 × 142 cm, with 3.7 from 66 reviews. UK reviews say rods and wheels do not fit. The 1.67 cubic metre line is not the soil volume.
INTERWARM’s two stored reviews are from France. Five of 13 stored Zymuegist texts are from Germany. Bamworld’s stored file is mostly outside the United Kingdom. Do not add those to a UK sample.
Choose the container before the star line. A 12.5–12.7 cm six-pack is not a 25 cm houseplant pot, and a 25 cm pot is not the Lechuza trough at about 79 × 19 × 19 cm. Sill boxes in this set are about 27 cm long and 11.5 cm wide. Skelang is the longer indoor pair, at 39.7 cm. Hanging baskets and the trellis bed are different jobs again. Bamworld’s six sizes, 12.7–20.3 cm, help when each plant needs its own pot, and they do not give you six matching herb boxes with a window.
Fayavoo’s window is the sill-box example with 4.6 from 343 reviews, all 50 stored texts from the United Kingdom. yarlung’s float is the small-pot example with 650 reviews, and UK reviews say it sticks. Yimomoyi’s clear basin does not clip. Lechuza has the drain plug and the largest file, 2,273 reviews, and the brackets are extra. JOLANG has no customer-review line. INTERWARM’s 4.5 is two reviews from France. A 4.7 from 35 reviews is not a stronger sample than 4.6 from 343.
Three typical situations, each with a recommendation from this comparison.
You want a short box with a water window, and you should keep rosemary and thyme out of a permanently wet mix. Fayavoo is six boxes at about £29.99, with 4.6 from 343 reviews. Stored UK reviews use them for kitchen herbs and say two plants fit. Roots can grow into the reservoir.
You want several small indoor pots and you can accept a sticky float or a loose base. The yarlung six-pack is about £16.99, with 4.3 from 650 reviews. The inner pot sits on legs. UK reviews say the float often sticks. It is a poor match for a cactus or a ZZ plant.
You want one trough near 80 cm, with a documented reservoir, an indicator and a drain plug. The Lechuza BALCONERA Color 80 is about £45.87, with 4.6 from 2,273 reviews. Brackets are a separate purchase. Have the railing checked before you hang a wet trough.
The top pick is Bamworld pots, set of 6 sizes, with the highest score in this comparison (9.3 out of 10, from 135 amazon.co.uk reviews). The best value for several small indoor pots is the yarlung six-pack at about £16.99, with 4.3 from 650 reviews, if you check a float that sticks and you do not need an overflow for rain. A 4.7 from 35 reviews is not a larger sample than Fayavoo’s 343. The MQJIAZHI trellis bed, at 3.7 from 66 reviews, is not a herb box. None of these listings was lab-tested, and a seller’s day-count is not a duration we measured.
Bamworld pots, set of 6 sizes
Highest score in this comparison, 9.3 out of 10, from 135 amazon.co.uk reviews.
yarlung 12.7 cm pots, set of 6
About £16.99 for six nested pots, with 4.3 from 650 reviews, against about £45.87 for one balcony trough.
Editorial
Products Compared publishes British-English buying guides based on amazon.co.uk listings and public UK sources. We do not run a lab and we do not invent test scores.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources used for this comparison, plus the amazon.co.uk listing facts in the display file. Shelf prices and star lines are those UK figures, recorded for this page in October 2026. They are a snapshot, not a promise.
This page contains affiliate links to amazon.co.uk. If you buy through them, we may earn a commission at no extra cost to you. Prices, stars and review counts are from the UK listings in this comparison, October 2026. We did not lab-test these planters.
