Quick answer: Good plant pot care comes down to drainage and watering. Every pot the roots sit in needs a drainage hole, raised on pot feet outdoors. Water when the top 2 to 3cm of compost feels dry, then soak until water runs from the base. Most potted plants die from overwatering, not neglect.
Get your plant pot care right at the roots and everything else falls into line behind it. I am Ted, forty-odd years on the same Sheffield allotment, and I will tell you plainly: most plants that die in pots are not carried off by pests or bad luck. They are drowned. Killed by water sitting in the wrong place. This guide covers drainage, watering, saucers, feet, and nursing pots through a British winter, all the unglamorous stuff that quietly decides whether a plant lives or dies.
Drainage: The Whole Ball Game
A plant's roots need air every bit as much as water. When compost stays waterlogged, the air gets squeezed out and the roots suffocate and rot in the dark. That is why a drainage hole is not a nice-to-have. It is the difference between a plant and a compost heap.
- Always have a drainage hole. If a decorative pot has none, treat it as a cover pot and keep the plant in a liftable inner pot.
- The old crocks debate. For years people wedged stones or broken pot in the base to help drainage. The Royal Horticultural Society now says this is unnecessary in most containers, and that a good, open, peat-free compost drains better than a layer of crocks ever managed (RHS, container drainage). A bit of mesh over a big hole to stop the compost washing out is all you need.
- Do not block the hole. Sat flat on paving, a pot can seal its own drainage against the slab like a plug in a bath. Which brings us neatly to feet.
Pot Feet: Small Things, Big Difference
Raising a pot off the ground on feet does two jobs at once. It lets water drain away freely, and it stops the base sitting in a puddle that freezes solid in winter and rots roots the rest of the year.
- Use feet under any pot standing on a hard surface, indoors or out. Something like the invisible pot feet lifts the pot a few millimetres, which is all it takes.
- Under a heavy pot, feet also let you get a trolley or your fingers underneath come moving day. Your back will thank you.
Saucers: Protecting Your Home and Your Plant
A saucer catches the water that drains through, which saves your windowsill, your floorboards and your patio all in one go.
- Indoors, a saucer is essential under any pot with a hole, unless you enjoy mopping.
- The one iron rule: tip out the standing water after watering. A plant left sitting in a full saucer is a plant with wet feet, which is the same rot problem sneaking in through the back door.
- Matched pot and saucer sets save you hunting for the right size down the line.
Watering Without Guesswork
More plants are killed by overwatering than by drought, and it is not close. The finger test beats any schedule ever written: push a finger a couple of centimetres into the compost. Damp, leave it. Dry, water it. That is the whole science.
- Water thoroughly, then let it drain. A proper soak that runs out the bottom beats little daily sips, which only ever wet the top inch.
- Adjust to the season. Plants drink far more in summer growth than in winter rest. Watering a dormant plant on a summer timetable simply drowns it.
- Going away. For holidays, self-watering pots and reservoir systems keep plants drinking at their own pace. A design like the self-watering range or the little bird self-watering globes buys you a week or two without begging a neighbour.
Gardeners' World make the same point that container plants need checking far more often than beds, because a pot holds a limited reservoir and dries out from every side at once (Gardeners' World, watering containers).
Keeping Pots Alive Through Winter
A pot outdoors takes a battering from November to March. The main risk is water freezing inside wet compost or in the pot wall itself and splitting it clean open.
- Raise pots on feet so meltwater drains away instead of pooling and freezing.
- Group pots together against a sheltered wall, which buffers the worst of the cold.
- Move the vulnerable ones under cover, into a porch or greenhouse, for the truly bitter snaps.
- Wrap large pots in hessian or fleece when a hard freeze is forecast.
For the full outdoor picture, including which materials go the distance, see my outdoor pots and garden planters guide.
Cleaning and Reusing Old Pots
Reusing pots is thrifty and sensible, but old compost and residue can harbour disease waiting for its next victim. Between plants, empty the pot, scrub it out with warm soapy water and a stiff brush, rinse, and let it dry properly. That is enough to hand the next plant a clean start. Sundries and cleaning kit live in the accessories range.
Drainage options compared
| Option | How it works | Best for |
|---|---|---|
| Drainage hole | Lets excess water leave the compost | Every pot the roots sit in |
| Pot feet | Raise the pot so holes stay clear | All outdoor pots, all year |
| Saucer or tray | Catches run-off indoors | Floors, windowsills, furniture |
| Cover pot method | Inner nursery pot lifts out to drain | Decorative pots without holes |
| Self-watering reservoir | Wicks moisture up as needed | Thirsty plants, holiday cover |
Frequently Asked Questions
Do plant pots really need drainage holes? Any pot the roots sit in, yes. Without drainage the compost waterlogs, air is forced out, and roots rot. Decorative pots with no hole should be used as cover pots with a liftable inner pot inside.
Should I put stones or crocks in the bottom of a pot? Modern advice says it is unnecessary. A good open compost drains better on its own, and a layer of crocks can even hold water higher up in the pot. A little mesh over a large hole to stop compost escaping is all that is needed.
How do I water my pots while on holiday? Use self-watering pots or watering globes that release water gradually, group pots in the shade to slow drying, and give everything a thorough soak before you leave. These steps buy most plants a week or two unattended.
About the author Ted Mullins - Forty years with muck under his nails Ted has kept the same allotment plot in Sheffield for the best part of forty years and grows more than he and his neighbours can eat. He has potted on thousands of plants and has strong, hard-won opinions about frost, root rot and cheap plastic. He mentors newcomers on his site every spring. Writing for Potty for Plant Pots.