Lechuza Classico 21 LS Self-Watering Planter
Last updated: 5 October 2026
The Lechuza Classico 21 LS is a small self-watering planter with a hidden water tank in the base and a float that shows you when the tank needs filling. It stands 20cm tall and 21cm across, so it suits a single houseplant on a table or windowsill. On 4 October 2026 Amazon UK sold the white high-gloss version for £32.29, sold and dispatched by Amazon, with one left in stock. Lechuza's UK shop had it in stock for £28.89, with free delivery only on orders over £30.
Buy the Lechuza Classico 21 LS on Amazon UK, £32.29Buy from Lechuza, £28.89
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How the self-watering system works
The pot has two parts. The outer shell holds water at the bottom, and a removable liner holds the plant above it. A layer of Lechuza's mineral substrate, called PON, sits in the bottom of the liner and draws water up to the roots.
A float in the side of the liner rises and falls with the water. Lechuza's instructions say to refill only when the marker reaches "min", so you water less often and you can see the level without lifting the plant out.
For the first two to three weeks you water from the top as normal. Once the roots reach the tank, you fill it to the maximum and let the system take over. Lechuza says a full tank can last up to three months, though a thirsty plant in a warm room will use it much faster.
Indoors and outdoors
There is a screw-in drain plug in the base. Indoors you leave it in, so the tank holds water and nothing leaks onto the furniture. Outdoors you take it out, so heavy rain drains away instead of drowning the roots.
Lechuza rates the plastic as UV and frost resistant, from -30°C to 70°C. So the pot can stay out on a balcony or doorstep all year.
Key facts
- Price: £32.29 on Amazon UK on 4 October 2026, sold and dispatched by Amazon, one in stock; £28.89 from Lechuza UK on 5 October 2026, free delivery over £30
- Size: 21cm across, 20cm tall
- Planting volume: 3 litres
- Water tank: about 1.1 litres (0.3 US gallons, per Lechuza)
- Weight: 1.2kg
- Material: polypropylene with a high-gloss finish
- In the box: outer pot, liner with water level indicator, PON substrate, drain plug
- Made in: Germany, by geobra Brandstätter, the family firm behind Playmobil
- Model number: 16020
- Rating: 4.5 out of 5 from 3,856 ratings on Amazon UK
Who it suits
- People who travel: a full tank covers a week or two away without asking a neighbour to water.
- Anyone in a centrally heated flat: radiators dry compost out quickly, and the tank keeps the roots supplied between waterings.
- New plant owners: the float shows when to water, so there is no guessing from the feel of the compost.
Our gift guide for green-fingered friends has more presents for people who keep plants alive.
The limits
At 21cm across, it takes a small plant. A pothos, a peace lily or a small snake plant fits; a fiddle-leaf fig does not. Lechuza makes the Classico in larger sizes if you need more room.
Succulents and cacti are a poor match. They want the compost to dry out completely, and a permanent tank underneath works against that.
It is plastic, not ceramic. The gloss finish looks smart, but the pot is light, so a tall plant can tip it over unless you add weight in the base.
Stock was thin on 4 October 2026, with one white pot left on Amazon UK. If Amazon sells out, Lechuza's UK shop had the same pot in stock on 5 October 2026 in white and four other colours.
Where to buy it in the UK
Amazon UK sells the white high-gloss Classico 21 LS directly, with free delivery. Lechuza's own UK shop sells it for £28.89 in five colours, though at that price it falls just under the £30 free-delivery line. The maker's Classico LS 21 product page lists the full specification and the setting-up steps.
For something to read while the roots settle in, The Little Book of House Plants covers which plants suit which rooms.
Lechuza Classico 21 LS on Amazon UKBuy from Lechuza
FAQs
How much is the Lechuza Classico 21 LS?
£28.89 from Lechuza's UK shop on 5 October 2026, plus delivery under £30, or £32.29 for the white high-gloss version on Amazon UK, sold and dispatched by Amazon.
How long does the water last in a Lechuza pot?
Lechuza says up to three months on a full tank. In practice it depends on the plant, the light and how warm the room is, so check the float every week or two at first.
Do you water a Lechuza pot from the top?
Only for the first two to three weeks, until the roots reach the tank. After that you fill the tank through the filling shaft and let the plant draw water up.
Can you use a Lechuza Classico 21 outside?
Yes. Take out the drain plug so rain can escape. Lechuza rates the pot for -30°C to 70°C and says it is UV resistant.
What plants suit a self-watering pot?
Plants that like evenly moist compost do best, such as peace lilies, ferns, pothos and herbs. Succulents and cacti prefer to dry out and are better in an ordinary pot.
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