Four terracotta ollas with white glazed necks sealed with a cork stopper, on a white background

Four bare terracotta ollas in a teardrop shape, a uniform orange tone, on a white background

Ollas with white enamelled necks and cork stoppers placed on a greenhouse table, among potted plants

Olla dimensioned at 14.2 cm tall and 8.2 cm wide for 320 ml, with details of the clay and tip

Four illustrated uses: raised vegetable bed, vegetable plot, flower border and houseplants

Pack of 4 terracotta ollas for planting

Name: Pack of 4 terracotta ollas for planting
SKU: 3bb3864c-bd75-42ae-818b-98c3d252ae42
Price: 87.0 USD
Availability: InStock

$87.00

$29.00 × 3 with no fees Klarna.

These 4 terracotta ollas of 320 ml are planted tip-down into the compost of a pot or planter, and water seeps through the clay as the soil dries out. Standing 14.2 cm tall, they are available either with a white-glazed neck and a cork stopper, or in plain bare terracotta.

Ref. 3bb3864c-bd75-42ae-818b-98c3d252ae42·Irrigation olla

Finish : White enamelled neck

White enamelled neck

Bare terracotta

Material : Terracotta

Terracotta

Customer support 7 days a week by email

Delivery within 2 to 15 business days

100 % secure payment

The summary

What you receive: 4 terracotta ollas of 320 ml each.
Dimensions: 14.2 cm tall by 8.2 cm wide.
How many per pot: one olla for a 15 to 20 cm pot, 3 or 4 per planter.
Finishes: white glazed neck with cork stopper, or bare terracotta.
Maintenance: descaling with white vinegar, and storing in a frost-free place.
First installation: soak overnight, then plant into loosened, firmed compost.

Four teardrop ollas of 320 ml, for pots, planters and raised beds

The pack of 4 terracotta ollas for planting allows you to water pots, planters and raised beds from below the soil. Each olla holds 320 ml and is planted point down in loosened compost. Water seeps through the clay as the soil dries. One olla is enough for a 15 to 20 cm pot, and 3 or 4 for a planter.

This pack contains 4 drop-shaped ollas, each holding 320 ml, which are planted point-down into the compost of a pot, planter, or raised bed. You fill them from the top, and water seeps into the soil through the terracotta at the rate it dries out.

💧 Four 320 ml reservoirs

Each olla measures 14.2 cm tall by 8.2 cm wide and weighs approximately 210 g empty. Its teardrop shape ends in a point that makes it easy to insert into loosened compost, while the opening sits at the top, flush with the soil surface, for filling. With 4 units, you can equip 4 separate pots, or space them along a planter box, with each reservoir filled independently of the others.

The moistened zone around an olla is roughly twice its diameter, about fifteen centimetres for this 8.2 cm model. A single olla is therefore suited to a pot approximately 15 to 20 cm in diameter, placed close to the roots, whereas a deep raised bed is better served by a burial jar of 1 to 6 litres. In a 60 cm planter, place 3 or 4 of them, spaced around fifteen centimetres apart, so that the compost stays moist from one end to the other with no dry strip in between.

Fill the fitted pots with coco coir

If you are repotting at the same time as installing the ollas, the 3 blocks of compressed coco coir yield 210 litres of grow medium once rehydrated, enough to fill many pots and a planter. The coir retains the water that the olla delivers whilst remaining well aerated around the roots. Press it lightly against the clay when fitting, as it is this contact that allows the water to transfer.

Replace the lid on each olla after filling it with water

An olla left uncovered loses some of its water through evaporation, collects soil and fallen leaves, and provides mosquitoes with a still surface on which to lay eggs during summer. After each refill, replace the cork stopper on models fitted with one, or lay a small flat stone over the opening of plain terracotta models.

🍶 Glazed neck or bare clay

You have a choice of two finishes. The first has a white enamelled neck sealed with a cork stopper: the enamel closes the pores of the visible section, which therefore loses no water to the air, and diffusion takes place through the lower section of bare terracotta buried in the compost. The second is in bare terracotta all the way up, with a uniform orange tone that blends into a terracotta pot. The principle and installation are the same for both.

🪴 From installation to the first month

Before the first use, leave the olla to soak in a basin of water overnight so the clay is fully saturated, this extends the diffusion time during the first few fills. Next, loosen your compost, push the olla in point-first up to the base of the neck, then firm the soil around it by hand. Water the pot normally on the day you install it, as an olla placed in dry compost will empty very quickly at first. A plant that has just been transplanted will not benefit until its roots reach the clay, which can take up to a month: continue watering from the surface in the meantime.

🧂 Limescale and winter

Minerals from the water gradually build up in the clay's pores, causing diffusion to slow over time. When an olla has almost stopped draining while the compost around it is dry, remove it, fill it with white vinegar, leave it to work, then rinse thoroughly before putting it back in place. Waterlogged terracotta can also crack when it freezes: if your pots spend the winter outside, remove the ollas before the first frost and allow them to dry completely before storing. The guide everything you need to know about ollas covers this mechanism in detail.

Technical specifications

The essentials

Contents: 4 ollas to plantFor 4 separate pots, or a 60 cm planter.
Capacity: 320 ml per ollaEach olla is filled independently of the others.
Dimensions: 14.2 x 8.2 cmHeight and width. Allow at least 16 cm of compost.
Weight: Approximately 210 g per ollaEmpty.
Finishes: White glazed neck or bare terracottaThe enamelled version is sealed with a cork stopper.
Material: Porous terracottaWater passes through the bare section buried in the compost.

To budget for separately

A bowl of water: One night's soakingBefore first use, to saturate the clay.
White vinegar: For descalingWhen diffusion slows noticeably after a few seasons.

In the box

4 terracotta ollas of 320 ml, in the chosen finish

Capacity, dimensions, weight and finishes: product visuals, recorded on 07/10/2026. Wetted zone: order of magnitude from the agricultural extension services of the universities of Arizona and North Dakota.

Estimate your
delivery time

Four tapered clay pieces, packed separately: the tips are the parts most vulnerable to damage in transit. Check all four 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

How many ollas are needed per pot?

What are the dimensions of an olla?

What is the difference between the two finishes?

Point	Glazed neck	Bare clay
Visible part	White glaze	Terracotta
Seal	Cork stopper	Flat stone
Diffusion	Buried part	Buried part

How often do they need topping up?

Do they need soaking before installation?

An olla empties in a day, is that normal?

How do you descale them?

Do they need to be brought in for winter?

Let us talk about your project

A question about this product or your setup? Our team will answer and advise you.

Email us Contact form

Interest-free instalment payments

Offered depending on the cart amount, at checkout.

Delivery in 2 to 15 working days

Depending on the products and shipping sites. Estimate by destination in the estimator on this page.

After-sales service 7 days a week by email or chat

Our team answers all your questions.

Shop responsibly

Become part of the change.

Pack of 4 terracotta ollas for planting

The summary