Made to Last
We lavish attention on the plants and ignore the pots they live in — yet a good pot will outlast a dozen plantings if you treat it kindly. Here’s how to clean, store and, above all, protect your containers through a British winter.
We spend a great deal of care on the plants and almost none on the pots they live in. Which is odd, when you think about it, because the pot is the part that lasts. A plant might give you a season, or a few years; a decent pot, looked after, will see out a whole succession of plantings and still be earning its place decades from now. It’s worth a little kindness in return.
Most of that kindness is simple — a rinse here, careful storage there. But there’s one thing that quietly destroys more pots than anything else, and it arrives every winter. We’ll come to that.
Indoor and outdoor pots
There’s no strict rule dividing the two — put whatever you like on the kitchen windowsill — but there’s a practical difference worth understanding. Outdoor containers tend to have proper drainage holes, so plants aren’t left sitting in water after rain. Indoor pots are often made without them, to spare your surfaces, which is why the neatest way to use a decorative indoor pot is as a sleeve: leave the plant in its plain nursery pot and slip the whole thing inside, lifting it out to water.
Indoor pots ask very little. An occasional rinse to clear the compost and crumbled leaf litter that gathers in the bottom, and that’s about the extent of it. It’s the outdoor ones that need real looking after.
Cleaning them, and why to bother
Between plantings, it’s worth giving a pot a proper clean. It isn’t only about looks — a pot can harbour pests and the spores of disease from whatever grew in it last, and starting a new plant in that is asking for trouble.
The job is easy. Brush out the loose soil and residue, then rinse well. If you want to disinfect more thoroughly, warm soapy water does the job, and a splash of white vinegar in the mix helps. Then let the pot air-dry completely before you use it or put it away.
As for that hard white crust that builds up on terracotta over time — it’s mineral salts leaching through the clay, and whether you remove it is purely a matter of taste. Plenty of us rather like it; that weathered, chalky bloom is half the charm of an old terracotta pot, and I’d usually leave it. But if you prefer them clean, white vinegar will dissolve the deposits, or a paste of baking soda worked in with an old toothbrush will shift them. Neither harms the pot.
Storing them well
When pots aren’t in use, how you store them decides whether they survive the wait.
Let them dry fully, then stack them upside down somewhere safe — a shelf or bench, out of reach of small hands and paws, where they can’t be knocked and smashed. A sheet of paper slipped between each one stops them wedging together, which is a genuinely maddening problem to discover in spring. With plastic you can build towers to your heart’s content. With terracotta and ceramic, be far more restrained — the weight of a tall stack cracks the ones at the bottom.
The winter problem
Here’s the thing that matters most, and the reason pots die young: frost.
Terracotta and unglazed ceramic are porous. They drink up water through their walls, and when that trapped water freezes it expands — water is strange that way, taking up more room as a solid than a liquid — and the pressure splits the clay from the inside. Worse, it isn’t the depth of cold that does the damage so much as the endless freeze and thaw of a British winter, each cycle working at the cracks like a paperclip bent back and forth until it snaps.
A few things save your pots.
First, when buying, mind the label. “Frost-resistant” and “frost-proof” are not the same promise. Frost-resistant means the pot tolerates a bit of cold but may still flake or crack in a hard winter; frost-proof means it’s been fired hotter and denser, and should genuinely see the season through. For a pot you intend to leave out all year, pay for frost-proof. It’s the difference between a pot that lasts and one you replace.
Second, keep them from sitting wet. Raise outdoor pots on proper pot feet or a couple of bricks, so water runs freely out of the drainage holes rather than pooling underneath and freezing. A pot standing in a frozen puddle is a pot with cold driven straight into its base.
Third, if a pot is precious — an old terracotta piece, a fine glazed one — the surest protection is to empty it and bring it under cover for winter. A shed, a greenhouse, anywhere dry and frost-free. A dry pot has almost no water in it to freeze, and comes out unscathed in spring. And a small point of shape worth knowing: those lovely round pots with narrow necks are the most vulnerable of all, because frozen compost can’t rise up and out the way it can in a straight-sided pot — so it pushes sideways and cracks them clean in two. Give your best rounded pots the shelter first.
When to let a pot go
The happy truth is that a pot in good order never needs replacing. Reuse them endlessly; that’s rather the point.
When one does finally break, it still isn’t quite finished. Biodegradable pots can go on the compost heap. Plastic goes in the recycling. And a shattered terracotta or ceramic pot has an afterlife too — though not, whatever you may have read, as “drainage” in the bottom of your other containers. That old trick doesn’t actually improve drainage, and can trap water rather than freeing it. What the fragments are genuinely good for is covering a large drainage hole to stop compost washing straight through, or being crushed down to make a decorative topping or a bit of path. Nothing wasted.
Look after them and they’ll look after your plants — season after season, for far longer than any single thing you’ll grow in them. A good pot really is made to last. You just have to let it.