Growing Sweet Strawberries in Hanging Baskets

Few things beat the taste of a sun-warmed strawberry picked at eye level, still cool from the morning. For growers with a small patio, a balcony or just a sunny wall, hanging baskets turn wasted vertical space into a genuine harvest — and they solve the single biggest strawberry problem at the same time. Slugs and snails rarely make the climb, and fruit that never touches the ground stays clean, dry and free of grey mould.

Why baskets suit British strawberries so well

Strawberries are woodland edge plants. They want sun on the leaves, air around the fruit and roots that never quite dry out. A hanging basket on a south- or west-facing wall gives you all three, plus a microclimate: brick and render radiate warmth back into the evening, so fruit ripens a fortnight ahead of plants in open ground.

Raising the crop also lifts it away from soil-borne problems and keeps ripening berries out of reach of ground slugs and woodlice. You will still see birds — blackbirds learn quickly where the sweet stuff is — so keep a net or fleece handy for the week your fruit colours up.

Choosing the basket and filling it

A basket of 30–35cm diameter holds three plants comfortably; go to 40cm for five. Smaller baskets look charming but dry out within hours on a hot July day, so err on the generous side.

• Liner: a woven coir or wool liner holds moisture far better than bare wire, and wool liners are especially good at buffering dry spells.
• Compost: mix a peat-free multipurpose with about a quarter by volume of John Innes No. 2 for weight and moisture, plus a handful of horticultural grit for drainage.
• Feed: stir in a slow-release general fertiliser at planting, and consider water-retaining gel — it genuinely helps in a basket.
• Fixings: a sturdy metal bracket screwed into masonry, not a hook pushed into render. A full 40cm basket can weigh over 15kg when soaked.

Which varieties to grow

Summer-fruiting types crop heavily over three or four weeks in June and July. 'Cambridge Favourite' and 'Honeoye' are reliable, and 'Elsanta' — the supermarket favourite — tastes far better home-grown. For a much longer season, choose perpetual or everbearing varieties such as 'Everest', 'Albion' or the deeply flavoured French 'Mara des Bois', which will fruit from July right through to the first frosts.

Alpine strawberries such as 'Mignonette' are lovely in baskets too, though the berries are small — treat them as a garnish crop rather than a bowlful.

Planting up, step by step

Plant in late March under cover or from mid-April outdoors, once hard frosts have passed. Soak bare-root plants for an hour before planting, and water pot-grown ones well.

• Space plants evenly around the rim, with one in the centre if the basket is large.
• Set each crown — the thickened growing point — exactly at compost level. Bury it and the plant rots; leave it proud and it dries out.
• Firm gently, then water until it runs from the base, and top up with a mulch of gravel or wool pellets to slow evaporation.
• Hang the basket at roughly 1.5 metres — high enough to be out of slug range, low enough to pick without a stepladder.

Watering, feeding and pollination

From June onwards, expect to water twice a day in warm weather. Baskets have a tiny reservoir of compost and a huge surface area of leaves losing water. Water in the morning and again in the early evening, aiming at the compost rather than the foliage — wet leaves invite botrytis. Rainwater from a butt is ideal, especially in hard-water areas.

Start a high-potash tomato feed at half strength once flowers open, moving to full strength weekly as fruit swells. Avoid nitrogen-rich feeds, which give you handsome leaves and precious little fruit.

Pollination matters. Each flower needs insects to visit it, or you get small, misshapen berries. Position baskets where bees work, and on still days go round with a soft artist's brush at midday, stroking the centre of each open flower — it takes two minutes and noticeably improves the crop.

Pests, disease and overwintering

Aphids can cluster on new growth; a jet of water usually shifts them. Red spider mite thrives in hot, dry conditions, so mist the foliage on very warm afternoons. Remove any mouldy fruit immediately and keep air moving around the basket. Vine weevil grubs may nibble roots in containers — if plants collapse for no clear reason, tip out the compost and check.

For winter, everbearers can be lifted, potted individually and kept in a cold frame or unheated greenhouse, watered sparingly. In mild areas you can leave the basket hanging in a sheltered spot, wrapped in fleece, but reduce watering without letting the compost dry completely. Summer-fruiting plants decline after three seasons; the simplest approach is to peg a few runners into small pots in late summer, overwinter those young plants, and start fresh baskets each spring.

Do that, and you will have a crop that costs a fraction of punnets from the shop — and tastes considerably better.