Oyas
The olla regulates water flow according to each plant's needs
You love your plants. Really. But between your life, your projects and that series you still haven't finished, watering sometimes (often) falls by the wayside. That's exactly why we created our oyas. These little terracotta objects, also called oyas, are here to step in when your memory lets you down. And honestly, they do it with style.
A terracotta oya is something like the silent companion of your houseplants. You fill it with water, plant it in the pot, and it takes care of the rest. No guilt, no yellowing leaves giving you reproachful looks. Just happy plants and a decorative object that earns its place in your home.
What is an oya for houseplants?
An oya — or olla — is a handcrafted terracotta water diffuser that you plant directly into your plant's pot. It is actually one of the oldest autonomous watering systems in existence: traces of it can be found in agriculture several millennia ago. What sets ours apart is that they are entirely designed for indoor use, with careful finishes that make them genuine decorative objects.
In practice, the microporous terracotta lets water pass through very slowly via tiny micro-pores invisible to the naked eye. Your plant helps itself when it's thirsty, without any intervention from you. No programming, no sensor, no cable. Just porous ceramic and water. Simple, effective, elegant.
This automatic capillary irrigation system is particularly well suited to houseplants: it respects their natural rhythm, avoids both excess and shortage, and blends discreetly into any pot.
How does this automatic watering system work?
The principle is as simple as it is brilliant. The microporous terracotta acts like a natural membrane: the water inside the oya slowly passes through the porous ceramic wall and moistens the substrate around the roots. Your monstera is thirsty? It helps itself. Your ficus is fine? The water stays in the diffuser. This is micro-irrigation in its purest form, with absolutely no technology involved.
Where a watering can delivers a big splash all at once — sometimes too much, sometimes not enough — this automatic watering system diffuses continuously and gently, at the exact pace your plant needs. The kind of care your plants deserve, without needing a degree in botany to give it to them.
The result: fewer roots rotting from overwatering, fewer leaves dropping from lack of hydration. And above all, true peace of mind for you.
The everyday benefits of oyas
Let's be practical. In the morning, you walk past your plant and take a look at the oya. If it's empty, you fill it with water. If it's still full, you carry on with your coffee. That's it — that's the entire manual.
Generally, filling your autonomous watering system once a week is enough — but this can vary depending on the season and how thirsty your plant is. In summer, when it's hot and the soil dries out faster, you might top it up twice. In winter, some oyas easily last ten days. You pick up the rhythm quickly, without any fuss.
And then there are those moments when automatic watering for houseplants becomes truly indispensable:
Holidays: fill your oya up well before you leave and it will slowly release water while you're away. Depending on the plant and the season, it can cover a whole week — sometimes more.
Busy weeks: when your mind is elsewhere, your plants stay hydrated without you even thinking about it.
Long weekends: no more asking your neighbour to water your plants while you're away.
And between us, an oya isn't just an accessory you hide in the pot. It's a beautiful object that peeks out from the foliage, adding a touch of colour or texture. You choose it as much for what it does as for what it brings visually.
Which oya should you choose for your plants?
Good news: the choice is really simple. The only technical criterion to bear in mind is the size of your pot. After that, it's purely a matter of style. You can find our full range of oyas on our website: www.pepinplantcare.com
Mini Oyas for small plants
Is your pot less than 15 cm in diameter? The mini oyas are made for it. Perfect for small plants on a shelf or windowsill, they adapt to smaller spaces without sacrificing effectiveness.
Our Trio Mini Ollas is the perfect solution for equipping several small plants at once. Fancy a touch of whimsy? The Trio Mini Ollas - The Lovers is our favourite to gift (to someone else or to yourself — no judgement), while the Trio Mini Ollas - The Striped ones brings a little pep to a whole collection of small plants.
Classic Oyas for medium and large plants
Is your pot 15 cm in diameter or more? All our classic oyas are made for it. For the most impressive pots, the Olla Terracotta does the job with elegance: its natural hue blends into any décor and its raw terracotta recalls the ancestral roots of this irrigation system.
"If you prefer something more pared-back, the Olla Grainy White slips into minimalist interiors with a soft, almost mineral texture. For fans of bold décor, the Olla Leopard doesn't go unnoticed in a pot — and that's exactly the point. The Olla Heart is perfect for those who put love into everything (even their plant pots). And the Olla Pink and Red Striped adds a pop of colour that elevates any foliage."
Want to set up several plants at once or looking for an original gift idea? Our Duo d'Ollas and our Ollas x4 pack are the perfect solution.
At the end of the day, choosing your oya is a bit like choosing a piece of décor. You look at what you like, what goes with your interior, what makes you smile when you walk past. And if you can't decide, get a few. Your plants won't complain.
Your questions about oyas
What is an oya?
An oya (also called an olla) is a handcrafted terracotta water diffuser that you plant directly into your plant's pot. The porous ceramic lets water seep through very gently, and your plant helps itself when it's thirsty. No programming, no sensor, just terracotta and water. The principle is as old as time, and it works just as well today.
Are oyas effective?
Yes, and it's not just us saying so. The principle of porous ceramic releasing water has existed for millennia in agriculture. The practical advantage: this self-watering system prevents both overwatering (rotting roots) and underwatering (drooping leaves). Your plants receive exactly what they need, even when you forget. Especially when you forget. As a bonus, this capillary irrigation method uses less water than conventional watering: the water goes directly where it's needed, without evaporating at the surface.
We'd rather be honest with you. The ollas do have a few limitations worth knowing about: they represent a small initial investment compared to a simple watering can. In the first few days, it can be helpful to keep an eye on the water level to understand your plant's consumption rhythm. Finally, for very small plants in pots under 8 cm, even our mini ollas can be oversized. In all other cases, they do exactly what's asked of them.
How do you use oyas to water plants?
Three steps, no more:
1. Plant the olla in your plant's substrate, tip facing down, leaving the neck sticking out.
2. Fill the olla with clean water right to the top.
3. Watch your plants grow effortlessly!
Expect around a week's autonomy depending on the plant and the season. In summer, you may top it up twice. In winter, some ollas last ten days or more. You'll quickly find the right rhythm.
What is the most effective watering system?
There are several solutions: manual watering, wick reservoirs, electric drip systems... Among them, terracotta oyas stand out for their simplicity and naturalness. No electricity, no pipes, no programming. The porous ceramic irrigation system automatically adapts to the plant's actual needs, making it one of the gentlest and most water-efficient methods for houseplants.
How do you water plants while on holiday?
That's exactly the superpower of the olla. Fill it up well before you leave and it will gradually release water during your absence. Depending on the plant and the season, this automatic holiday watering system can easily cover a week — sometimes more for low-thirst plants.
How do I care for my oya?
Rinse the olla with clean water from time to time to remove any mineral deposits. And that's it!
An oya is the pleasure of seeing your plants thriving without watering becoming a chore. A beautiful terracotta object, a simple gesture once a week, and plants that will never hold a grudge again. All that's left is to choose your colour.