Growing Raspberries in Containers

No garden border to spare? Raspberries take to pots far better than most people expect. Pick the right type, give them a big enough container, and a patio or balcony can hand you a genuine bowl of fruit each summer.

Why autumn-fruiting types suit pots

For containers, reach for autumn-fruiting raspberries (also called primocane types) over summer-fruiting ones. There are two good reasons.

First, they're shorter — varieties like Autumn Bliss, Polka and Joan J top out around 1.2 to 1.5m, so they don't need the tall post-and-wire framework a summer raspberry demands. A single cane support or a few stakes is plenty.

Second, pruning is foolproof. Autumn raspberries fruit on this year's new canes, so you simply cut everything to the ground in late winter. No fiddly job of telling old wood from new — which is exactly what you want in a pot. The main raspberry guide explains the summer-versus-autumn split in full if you want the background.

Summer-fruiting raspberries will grow in a large container too, but they're taller, need sturdier support and a more careful two-step prune. Start with an autumn type and you'll have an easier first season.

Pot size and loam-based compost

Raspberries are hungry, thirsty plants with vigorous roots, so go big. The minimum is a pot 40 to 45cm across (around 30 litres); a half-barrel or a 40-litre planter is better still and lets you grow a small clump.

Skip multi-purpose compost on its own — it breaks down and runs out of food within a season. Use a loam-based compost such as John Innes No. 3, ideally mixed roughly half-and-half with peat-free multi-purpose to keep it free-draining. The loam holds nutrients and moisture far longer, which matters in a container.

Top the surface with a 3 to 5cm mulch of compost or bark each spring. It locks in moisture and feeds the soil as it breaks down.

Planting and watering

Plant three to five canes per large pot or half-barrel — enough for a worthwhile pick without overcrowding. Set them at the same depth they were growing before (look for the old soil mark on the stem), firm the compost gently and water in well.

Watering is where most container raspberries are won or lost. Pots dry out fast, and a thirsty plant drops its flowers and gives small, crumbly fruit. In summer, expect to water daily in warm spells — push a finger into the compost and if the top few centimetres are dry, water generously until it runs from the base.

They feed heavily too. From spring through to the end of cropping, give a weekly high-potash feed — a tomato food is ideal. A homemade comfrey feed does the same job for free. Without regular feeding, container plants quickly run out of steam.

Pruning in a pot

This is the easy part. With autumn-fruiting raspberries, cut all the canes right down to compost level in February, before the new shoots push up. Fresh canes grow from the base each spring and fruit the same year, so you never have to work out which stems to keep.

Through the growing season, thin out a few of the weakest new canes if the pot looks crowded — aim to leave the six or so strongest. That keeps air moving and channels the plant's energy into fruit rather than a thicket of stems.

Every two or three years, tip the whole rootball out in winter, trim back any congested roots and refresh the compost — or split a vigorous clump and replant the best portion. Container raspberries lose vigour faster than ground-grown ones, so this top-up keeps crops coming.

Patio and balcony placement

Raspberries crop best in full sun, so stand the pot in the brightest spot you have — they'll tolerate a little shade but give less fruit for it. A sheltered position also helps, as exposed balconies can scorch foliage and dry pots out even quicker.

A heavy, well-filled container is more stable in wind, which is worth thinking about on a high balcony — push it against a wall or railing for extra support. Over winter, the pot can stay outside; the canes are fully hardy. Just keep it off the worst of the wet by raising it on feet.

For the wider rules on compost, pot sizes and feeding across all your crops, see our guide to growing food in containers. And if you fancy more pot-grown fruit alongside your raspberries, strawberries in pots and blueberries in pots are both happy in the same sunny corner.