How to plant in terracotta pots when the pack arrives
Updated: October 2026
The box is on the kitchen table, or you are about to click buy and want the sequence first. How to plant in terracotta pots is not a ranking. It is a hole you can see, compost that matches the plant, and a first watering that fits a basil or a cactus, not a brand. The [clay pots comparison](/hub/plant-accessories/clay-pots) is where the nine amazon.co.uk packs sit, from £6.99 to £28.99 on 19 October 2026. Size bands stay on the buying guide. Frost wrapping stays on the frost page. We did not run a lab trial.
The box is on the kitchen table, or you are about to click buy and want the sequence first. How to plant in terracotta pots is not a ranking.
The box is on the kitchen table, or you are about to click buy and want the sequence first. How to plant in terracotta pots is not a ranking. It is a hole you can see, compost that matches the plant, and a first watering that fits a basil or a cactus, not a brand. The clay pots comparison is where the nine amazon.co.uk packs sit, from £6.99 to £28.99 on 19 October 2026. Size bands stay on the buying guide. Frost wrapping stays on the frost page. We did not run a lab trial.
Our top picks
| Badge | Product | Drainage | Saucer | Finish | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  vensovo vensovo 3 inch pots, 20 pack | Yes | No | Lacquered | 8.0 | about £28.99 | View offer |
 Green Thumbz Green Thumbz 10 cm pots with saucers, 6 pack | Yes | Yes | Unfinished | 8.6 | about £18.99 | View offer | |
| Best value |  T4U T4U 6.5 cm mini pots, 12 pack | Yes | Grid pad | Matte | 8.4 | about £14.99 | View offer |
On this page
Check the hole before you add compost
Turn every pot over before the compost bag is open. The Royal Horticultural Society treats a drainage hole as essential in a container, because compost in a pot stays wetter than open ground if water cannot leave. A listing field of Has Drainage: Yes is a promise on a page. The knock-out on the pot you are holding is the fact.
T4U’s 6.5 cm twelve-pack is the concrete example in this set. UK reviews describe discs that were not fully cut and rattled in the box. If that disc is still attached, punch it from the inside with a screwdriver, over a bin, so shards do not sit in the compost. Do not plant over a closed base and hope terracotta will breathe enough. If a pot arrived cracked, stop. A hairline in dry clay opens when the wall is wet. Photograph the damage rather than planting into a fault.
Soak, or water to run-off
UK growers split. An Independent gardening note tells you to soak new terracotta overnight so dry clay does not act like blotting paper and pull moisture out of the first watering. Other growers skip the bath and pot up dry, then water until liquid runs from the hole. A 6.5 cm T4U pot holds so little mix that an overnight soak is optional; a dry 10 cm Green Thumbz wall will steal more from the first drink. Both fail if the hole is still blocked.
Do not soak a painted or lacquered mini as if it were raw clay. vensovo’s 20-pack has a lacquered finish field; Green Thumbz 16 × 6.5 cm is painted. Those walls will not drink like unfinished earthenware.
Peat-free mix, then the first drink
The RHS wants peat-free container compost. Match the mix to the plant, not to the word terracotta. A windowsill herb or a leafy houseplant wants a peat-free multi-purpose with some drainage. A cactus or succulent wants a gritty mix; the British Cactus and Succulent Society asks for an open compost and a hole, and notes that unglazed clay evaporates quickly. Garden soil from a UK border is the wrong fill: it slumps, holds wet, and brings slugs and weed seed into a 10 cm pot.
Unglazed terracotta dries faster than plastic, so in a warm UK summer you water more often, not less. Feel the mix at knuckle depth rather than watering on a calendar. White crust on the wall is usually fertiliser salt, not a reason to pour vinegar onto the soil.
Empty the tray
Indoors, a saucer is there so the furniture stays dry. It is not a pond. After watering, wait a few minutes, then pour off what collected. Green Thumbz saucers that sit narrower than the rim still hold enough to wet the base if you leave them. Wet feet rot roots in a small pot faster than in a border, because there is nowhere else for the water to go.
T4U has no saucer in the spec. Stand those minis on a tiled tray or a kitchen plate, and still empty it. Outdoors, standing water in a saucer is a winter crack waiting to happen. Take the tray off before frost; the full winter sequence, including pot feet, is on frost proof terracotta pots.
If you are still choosing a pack rather than filling one, the clay pots buying guide is the centimetre check. Call a professional if a large planted pot has a structural crack you cannot empty safely.
Common questions
Should I soak a new clay pot?
You can. The Independent soak-overnight note is for new unglazed terracotta that would otherwise pull the first watering into the wall. Other growers skip it and water to run-off. Soak unfinished 10 cm pots if they feel chalk-dry. Do not treat a painted mini pack as the same wall, and do not soak as a substitute for punching the hole.
What compost for terracotta in the UK?
Peat-free, and matched to the plant. Multi-purpose peat-free for herbs and leafy houseplants; a gritty mix for cacti and succulents, as the BCSS advises. Do not fill a 10 cm clay pot with garden soil. The wall dries the mix faster than plastic, so the compost still needs to hold some water without turning to mud.
How soon do I water a cactus after potting?
If you did a full succulent repot and disturbed the roots, the BCSS asks you to wait one to two weeks before watering. If you only moved an undisturbed root-ball into a slightly larger pot, water lightly and let the extra drain. Do not apply that delay to basil or a leafy houseplant.
What if the drainage disc is still attached?
Punch it before you add compost. T4U UK reviews already describe knock-outs that rattled in the box. A closed base is not a terracotta feature. It is an unpunched disc. Wear eye protection if the clay chips.
How often do 6.5 cm pots need water?
In a warm room, often. Unglazed 6.5 cm clay holds little compost and dries faster than plastic. In a UK July on a bright sill, that can mean most days. Feel the mix rather than following the pack brand. A 10 cm pot lasts longer between drinks.
Related pages
Sources
Public UK sources used for this comparison. Shelf prices, stars and review counts are the amazon.co.uk figures captured for these nine listings. Last checked 19 October 2026.
- RHS, Growing plants in containers (retrieved 19 October 2026)
- RHS, Winter containers (retrieved 19 October 2026)
- RHS, Preventing winter damage (retrieved 19 October 2026)
- British Cactus and Succulent Society, Containers (retrieved 19 October 2026)
- GOV.UK, General Product Safety Regulations 2005 (retrieved 19 October 2026)
- Consumer Rights Act 2015, section 9 (retrieved 19 October 2026)
- BBC Gardeners' World, Choose pots and containers (retrieved 19 October 2026)
- Ideal Home, How to clean terracotta pots (retrieved 19 October 2026)