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Start by Reading the Space, Not the Catalogue

Before you buy a single pot, spend twenty minutes out there with a cup of tea — ideally at a few different times of day. A narrow balcony is a very particular microclimate, and what thrives in one will sulk in another.

Ask yourself a handful of practical questions. Which way does it face? A south-facing balcony can push past 30°C in July and dry compost out in a day, whilst a north-facing one might get two hours of weak sun and stay damp. Where does the sun actually land — the wall, the floor, the railing? Where does wind funnel between your building and the next? Upper-floor balconies behave like wind tunnels, and that single factor will decide half your planting.

Then measure. Note the door swing, the drain position, and where rain drips from the balcony above. Knowing you have 1.2 metres by 3 metres, with a solid wall at one end and a prevailing wind from the west, is worth more than any mood board.

Grow Upwards with Vertical Planters

Floor space is the scarcest thing you own out there, so treat your walls, railings and ceiling as prime real estate.

• Wall-mounted pocket planters turn a blank render wall into a living panel. Fill the top pockets with trailing plants — ivy, trailing lobelia, nasturtium — and keep upright herbs lower down where they catch the light.
• Tension wires or a slim wooden trellis give climbers something to grip. Jasmine, clematis and sweet peas all work, though jasmine needs a sheltered spot.
• Over-rail troughs are brilliant for herbs and salad leaves, but secure them above and below the rail. Suction cups are not a fixing — use brackets, cable ties and, where possible, masonry anchors.
• Ladder shelving or a tiered planter stacks five or six pots in the footprint of one, and lets you shuffle things around as the seasons change.

One caution: hold planters about 5cm off the wall on brackets rather than pressing them against it. Constant damp against brick or render causes problems you really do not want to deal with.

Choose Plants That Can Take the Wind

Wind strips moisture from leaves faster than sun does, so tough, aromatic, small-leaved plants are your friends.

• Rosemary, thyme, sage, oregano, chives, winter savory and lavender all cope with gusty, exposed conditions and give you something to cook with.
• For colour, try sedum, sea thrift, blue fescue and hebe — they look at home in a coastal-style scheme and shrug off dry spells.
• Avoid basil and other tender annuals unless you have a genuinely sheltered, sunny corner.

Use pots at least 30cm deep: they are more stable in a gust and hold moisture far longer. Self-watering troughs are worth the investment if you are out at work all day, and a gravel mulch on top of the compost slows evaporation noticeably. Plant into a peat-free multi-purpose compost with a handful of grit for drainage, and feed fortnightly through the growing season.

Seating That Disappears When You Don't Need It

The trick with a narrow balcony is to keep the walkway clear. Aim for at least 60cm of open floor so you can move past your plants without a contortion act.

• A 60cm bistro table with two folding chairs is the classic solution for two people and a glass of wine.
• A wall-mounted drop-leaf table folds flat against the wall when you are done, freeing the whole width of the balcony.
• A storage bench does double duty: cushion on top, trowels, secateurs and cushions hidden underneath.
• Director's chairs and stacking stools are light, foldable, and the stools double as side tables for a lantern.

Choose powder-coated aluminium or FSC-certified teak over anything flimsy, and store textiles in a lidded box when rain is forecast. A folded chair tucked behind a planter is invisible.

Soften the Edges: Floor, Light and Screening

Clip-together decking tiles or a simple outdoor rug instantly warm up cold concrete, but always check you are not covering the drain.

For privacy and shelter, fit a porous screen — slatted, reed or willow — rather than a solid panel. Porous screens let wind through and reduce the buffeting that solid ones create. A fabric shade sail overhead can take the edge off midday sun without blocking light entirely.

For evening, keep it low and warm. A rechargeable table lamp with a warm bulb, a clip-on lantern, or warm-white solar string lights wound through the trellis will make the space feel like an extra room. A small outdoor-safe mirror on a shaded wall is an old trick for bouncing light into a gloomy corner.

A Balcony That Looks After Itself

Group your pots together rather than spacing them out. Clustering creates its own humid microclimate, reduces wind damage and means one watering can covers the lot.

Fifteen minutes a week is plenty for most of the year: water, deadhead, check ties and brackets, and pinch back anything leggy. In autumn, clear tired annuals and plant bulbs in pots for a spring display. In winter, raise pots onto feet so they do not sit in standing water, and wrap terracotta in hessian if a hard frost is forecast.

Do that much, and a balcony the size of a doormat will give you fresh herbs, somewhere to sit with a coffee, and a green view that makes coming home feel like a small holiday.