Choosing a planter is really several decisions stacked on top of each other: what it's made from, how big it is, whether it drains, and whether it looks right in the room. Most of the trouble people have with houseplants traces back to one of those being wrong. The Planter Finder takes the details you already know about a plant and a room and turns them into a specific recommendation.
What you're actually choosing when you pick a planter
Material affects how quickly the soil dries out. Terracotta is porous and lets moisture through its walls, so it dries faster than glazed ceramic or plastic, which is useful if you tend to overwater and a problem if your flat already runs warm and dry. Size affects the roots directly: a pot that's too large holds damp soil around roots that can't use it yet, and one that's too small forces frequent repotting or leaves the plant root-bound, with roots circling the inside of the pot because they've run out of room to spread. Drainage decides where the water that isn't absorbed actually goes, whether that's out through a hole and into a saucer or trapped against the roots in a sealed pot. The look of a planter is real, but it only has room to matter once the other three are settled.
What the finder asks you, and why each answer counts
The plant type you enter sets the baseline: a fern and a succulent want opposite things from a pot, because one wants moisture held near the roots and the other wants it gone within days. Room light level changes how fast the plant uses water and how quickly the soil in whatever pot you choose will dry, which shifts the material and drainage answer even for the same plant. How often you'd rather water is a genuine input. Aesthetic style comes in last, narrowing the shortlist of materials and shapes down to the ones you'd actually want in the room.
- Plant type: sets the moisture and drainage needs the recommendation has to satisfy first
- Room light level: changes how fast the plant uses water and how fast any given pot will dry out
- Watering frequency preference: pulls the recommendation towards moisture-retentive or fast-drying options
- Aesthetic style: narrows the shortlist once the material and drainage answer is already fixed
How it turns those answers into a recommendation
The tool runs in your browser. Nothing you enter is sent anywhere, and the recommendation appears as soon as you've answered the questions. It works through material, a size range, and a drainage setup, and shows its reasoning alongside each one. That reasoning is worth reading before you buy, because it tells you which answer pushed the recommendation in which direction, and lets you weigh it against anything about your plant or your room that the tool didn't ask about.
Where it can give you the wrong answer
It works from the details you give it and a set of general rules about how plants, light and materials interact. It can't see the plant in front of you: how root-bound it already is, how it's been watered up to now, or whether a room runs colder than its light level suggests. Two plants of the same species in different flats can reasonably need different pots, and the finder has no way to know which flat yours is. Treat the output as a specific starting point, and check it against the plant's own care guide where one exists.
Where to go from here
If you want to understand the reasoning behind a material recommendation in more depth, the planter material guide covers how each one behaves with moisture, weight and drainage side by side. If the size range it gives you needs translating into an exact diameter and volume, the Pot Size Calculator works from your current pot. For the drainage setup itself, including what to do with a decorative pot that has no hole, the drainage guide sets out the options for an indoor British room.