Plant Care
Choosing the Right Planter Size: Inner Pot and Outer Dimensions
Choose the space your plant needs and the presence you want in a room. Inner dimensions, outer dimensions and wall-planter openings answer different questions.
Start with the space your plant needs. Then consider how the planter will sit in your room.
Those are two different measurements. A wide or rounded exterior can give a small plant a substantial presence without giving its roots that same amount of space. Understanding the difference makes it easier to choose a planter that fits both the plant and the setting.
The inner pot is for the plant
On VerdiPot tabletop designs with a removable inner pot, its diameter and height describe the planting container. Use both measurements when assessing a root ball; diameter alone does not tell you whether a deeper root system will fit.
The size printed on a nursery pot is a useful starting point, not a guarantee. Measure the actual container and assess the plant’s root ball rather than assuming every pot described as “six inch” has the same usable space.
Choosing a much larger container is not automatically better. The Missouri Botanical Garden’s indoor watering guide notes that an oversized pot can hold more wet mix than a small root system can use. Choose for the plant you have, with appropriate room for growth—not simply the largest exterior that fits the shelf.
The outer dimensions are for your space
The exterior determines the planter’s footprint, height and visual weight. Measure the shelf or tabletop, then allow room for the leaves and for everyday access.
Two planters can offer the same inner-pot dimensions while looking very different in a room. For example, the published dimensions for size L are:
| Design | Inner pot: diameter × height | Exterior: diameter × height |
|---|---|---|
| Koshido L | 6.0″ × 5.5″ | 8.0″ × 7.1″ |
| Rill L | 6.0″ × 5.5″ | 8.0″ × 10.0″ |
The extra exterior height of Rill does not mean a deeper planting container. It is part of a different overall form, including its visible glass reservoir. Compare the Koshido and Rill product measurements rather than using the size letter as a complete specification.
A wall planter has a third measurement: the opening
Our wall planters do not use the removable inner-pot arrangement described above. For these, you also need to consider the planting opening.
The overall diameter describes the object on the wall. The opening width describes access into the planting area. It is not the full internal volume, and it is not a promise that a nursery pot of that nominal diameter will drop inside.
For Cloud, the 5.3″ exterior option has a 2.6″ opening width in the size diagram. The larger body and smaller opening are both intentional parts of the form. The wall-planter guide lists all three Cloud sizes and explains the reservoir and ventilation slots.
Do not force an established plant through an opening that is too small for its root ball or stems. Check the access dimensions before choosing the plant—not after mounting the planter.
Give the arrangement room to grow
Once the physical fit is right, look at the plant and planter together. A narrow upright plant may leave a sculptural rim clearly visible. A spreading plant may visually soften it. Trailing growth needs room beyond the planter’s footprint.
There is no single ideal ratio for every plant. The useful question is whether the combination feels intentional now and has space to change.
When a measurement is unclear, ask before ordering. Send the design you are considering, the dimensions of the current pot, and a photo of the plant. It is easier to resolve a fit question than to work around the wrong size later.
