Choosing a Pot That Hides the Plastic Base

Most artificial plants that look wrong in a room are not bad plants. They are decent plants sitting in the wrong container, with a disc of grey moulded plastic visible at the top of the pot.

That disc is the single most recognisable tell of a faux plant, more than shine and far more than leaf detail, because it is the one thing a living plant never has.

Two numbers, taken before you buy a pot

The base diameter and the base height. Almost nobody measures these and they decide everything that follows.

Your pot needs an inside opening at least four centimetres wider than the base diameter, so there is a ring of space around the plastic to fill. It also needs to be deep enough that the top of the base sits at least three centimetres below the pot rim. If the base sits proud of the rim, no filler will save it, and you will be looking at plastic from every standing position in the room.

This is why I check the base in the shop, as described in the cheap plant checklist. A wide flat base restricts you to large pots, and large pots cost more than the plant did.

Filling the gap, from best to worst

Real soil, dried out thoroughly in a low oven or over a radiator, is the best filler and costs almost nothing. It has the right matte darkness and the right irregular texture, and it is the only filler nobody has ever questioned in my flat.

The bright green sphagnum sold specifically for this purpose is the worst thing you can put in the pot. It is a colour that does not occur on a healthy soil surface indoors, and it draws the eye straight to the top of the pot, which is precisely where you did not want anyone looking.

Wedge it before you fill it

A plant that rocks when brushed past reads as an object placed in a pot rather than something growing out of one. Movement gives it away even when the surface looks right.

I wedge the base with folded cardboard, crumpled paper or offcuts of foam until the plant is genuinely rigid, then fill on top of that. The filler is a surface layer of two or three centimetres, not a full pot of soil. A large pot filled to the brim with soil weighs a great deal and cannot be moved by one person, which you discover the first time you clean behind it.

Fill the pot with something light, then finish the top three centimetres with something that looks right. Nobody digs.

Pot size, which most people get wrong in the same direction

Nurseries pot plants tightly. A living plant of a given height sits in a smaller pot than most people imagine, because the grower wants it root bound and shippable.

Faux plants are usually shown in oversized decorative pots in catalogue photographs, which trains the eye wrongly. A tall stem in an enormous vessel reads as a display piece, not as a plant. When I am unsure I look at what a nursery would use for that height and go one size up, no further.

Use two pots, not one

The arrangement that has worked best for me is a cheap plastic nursery pot inside the decorative one. The plant is wedged into the inner pot and filled there, and the inner pot sits on a block of foam inside the outer one at whatever height puts the base three centimetres below the rim.

Three things follow from this. Height becomes adjustable, so one plant can move between pots of different depths. The heavy decorative pot never needs to be lifted with soil in it. And when you eventually replace the plant, the new one goes into the inner pot without disturbing the arrangement at all.

It also means the filler layer is small enough that using real dried soil costs nothing, which is the finish that reads best.

Groups, where matching is the mistake

Three identical pots in a row reads as a shop display. Nobody acquires plants in matched sets over time, and a group that looks acquired is more convincing than a group that looks bought.

What I do instead is keep one attribute constant and vary the rest. Same material in three different heights, or three different materials in the same colour family. Vary the heights by more than you think, because a step of a few centimetres reads as an accident rather than a decision.

The other rule for groups is odd numbers, which is old advice and holds up. Two plants either side of a doorway works because it is deliberate symmetry. Two plants in a corner reads as an incomplete set of three.

Tall plants, where the pot has a second job

Above about a metre and a half, the pot is no longer only concealment. It is ballast. A tall artificial tree in a light pot goes over when someone walks past with a bag, and the stems bend permanently where they hit the floor.

Weight goes in the bottom of the outer pot, under the inner one. Sand, gravel, or a couple of bricks. It needs to be at the very bottom to be doing anything useful, which is another reason the double pot arrangement is worth the extra container.

What matters less than you would think

Pot material is mostly free choice. Terracotta, glazed ceramic, concrete and basket weave all work, and the decision is about the room rather than the plant.

The one thing worth avoiding is a pot with a visible drainage hole and saucer under a plant that will never be watered. It is a small inconsistency and it sits at eye level on a shelf. On the floor, where nobody looks down into the gap, it does not matter at all.