Quick answer: Give each strawberry plant about 15 to 18cm of its own space, with generous drainage and as much sun as you have. Hanging baskets and raised containers work particularly well, because keeping the fruit off the ground is what stops slugs and rot getting to it first.
Thirty years on the same allotment and strawberries in containers are still the crop I recommend to people with no ground at all. They are genuinely easier in pots than in soil.
Why pots suit strawberries
Three reasons, and they are all practical.
The fruit stays off the ground, so slugs and grey mould have a much harder time reaching it. That alone is worth the change.
You control the compost, which matters because strawberries hate waterlogging and most garden soil in this country is heavier than they would like.
And you can move them. Into the sun in summer, somewhere sheltered in winter.
Space per plant
About 15 to 18cm of pot width each. That is the number that matters.
A 30cm pot holds three plants comfortably. Cram in six and you get six small, competing plants and less fruit than three would have given you.
Depth of around 20cm is plenty. Strawberries are shallow-rooted, so width beats depth here — the opposite of a taprooted crop.
What to grow them in
Hanging baskets. My first recommendation. The fruit dangles clear of everything, the drainage is inherently good, and it uses space nothing else was using. A straw basket or anything from the hanging range works, with a liner.
Troughs and window boxes. A row of plants along a rail or sill, easy to net and easy to pick. A self-watering trough is genuinely useful here, because strawberries in containers dry out fast in July.
Grow bags. Cheap, drain well, and you can fold them away at the end of the season. These are sold for potatoes and work perfectly well for strawberries.
Ordinary pots. Fine. Three plants to a 30cm pot, raised on feet so it drains.
What I would avoid is the classic strawberry planter with pockets up the sides. They look charming and they water very unevenly — the top dries out while the bottom stays sodden, which is the same problem as any vertical planter.
Drainage, sun and water
Drainage first. Strawberries rot at the crown if they sit wet, so multiple holes and a free-draining compost — the drainage guide applies as much outdoors as in.
Then sun. Six hours or more if you can manage it. Less sun means fewer and less sweet berries, and no pot fixes that.
Then water, consistently. Containers dry out far faster than ground, and inconsistent watering is what gives you small hard fruit. Water at the base rather than over the fruit.
Through the winter
Strawberries are hardy and want a cold spell to fruit properly, so do not bring them indoors.
Do get the pot off the ground and out of the wettest spot, because the risk in a container is waterlogging rather than cold — the same principle as winter-proofing any patio pot.
Runners
Through summer plants throw out runners with baby plants on the end. Peg a few into small pots of compost and you have free plants for next year.
Plants get tired after three or four seasons, so this is worth doing rather than buying again. A set of nursery pots is all you need.
Browse outdoor pots and planters, and there is more on crops in containers in the plant-by-plant guide. The RHS has reliable variety advice if you are choosing what to grow RHS.
The short version
- Allow 15 to 18cm of pot width per plant - three plants in a 30cm pot, not six.
- Depth of about 20cm is plenty; strawberries are shallow-rooted, so width beats depth.
- Hanging baskets keep the fruit clear of slugs and drain well, which is why they work so well.
- Avoid tiered strawberry planters with side pockets - they water very unevenly.
- Leave them outside in winter; the container risk is waterlogging, not cold.
Frequently asked questions
How many strawberry plants per pot?
Allow about 15 to 18cm of width each, so three plants in a 30cm pot. Crowding six into the same pot gives you six competing plants and less fruit overall than three well-spaced ones would have produced.
What size pot do strawberries need?
Around 20cm deep is plenty, because they are shallow-rooted, so width matters more than depth. Judge the pot by how many plants it can hold at 15 to 18cm each rather than by its overall volume.
Are hanging baskets good for strawberries?
Very. The fruit hangs clear of the ground, which makes it much harder for slugs and grey mould to reach, drainage is inherently good, and it uses space that was doing nothing. Line natural fibre baskets before filling.
Do strawberry planters with side pockets work?
They look charming and water very unevenly. Water applied at the top runs through, so the upper pockets dry out while the lower ones stay sodden. A row of separate pots or a trough gives far more even results.
Should I bring strawberry pots indoors for winter?
No. Strawberries are hardy and actually need a cold period to fruit well the following year. Just raise the pot off the ground and move it out of the wettest spot, because waterlogging is the real container risk, not cold.
