Why a Few Pots Make a Real Difference

Gardeners with a small balcony, a paved courtyard or just a doorstep often assume that wildlife gardening is something that happens on a larger scale — a wildflower meadow, a hedge, a pond. But a collection of pots can genuinely support birds, bees, butterflies and a whole cast of smaller creatures, particularly in towns where green space is patchy. On a warm July day, a single lavender in a 30cm pot can be visited by dozens of bumblebees. A saucer of water can mean the difference between a thirsty hedgehog surviving a dry spell or not. Insects do not need much. They need flowers that offer nectar and pollen, somewhere to shelter, and a reliable drink. All three can be provided in containers.

The trick is to be deliberate. A pot of bedding begonias looks cheerful but offers almost nothing. Swap a few of those for flowering herbs and native perennials and the same space becomes productive. Here is how to go about it, whether you have two pots or twenty.

Fill Your Pots with Nectar and Pollen

Flowering herbs are the easiest starting point because they earn their keep twice over — you can cook with them and the insects adore them. Rosemary, thyme, oregano, marjoram, sage and mint are all excellent, and most cope well with container life if you use a pot of at least 30cm in diameter and water regularly. Let a few stems run to flower rather than snipping everything; the small flowers of oregano and marjoram are magnets for hoverflies and solitary bees.

Round out the herbs with plants that flower over a long season:

• Lavender — compact varieties such as 'Hidcote' suit pots, and the scent draws bees from metres away.
• Catmint (Nepeta) — a cloud of blue from late spring into autumn if you shear it back after the first flush.
• Borage — brilliant blue, self-seeds generously, and refills with nectar faster than almost anything else.
• Calendula and nasturtium — quick, cheap, edible, and reliable late-season nectar.
• Salvia and verbena — both flower right up to the first frosts in a sheltered spot.

Aim for something in bloom from March to November. Group pots together so pollinators can move easily between them, and place them in the sunniest corner you have — most nectar-rich plants want at least six hours of direct light.

Add a Shallow Water Dish — the Single Best Upgrade

Water is where most small gardens fall short. A birdbath is lovely, but what bees, hoverflies and wasps need is something shallow enough to stand in. Use a wide saucer, a terracotta plant tray or an old shallow bowl, and fill it with pebbles or glass beads so there are plenty of dry landing spots. Top it up to just below the pebble line.

Place it in the open but within a metre or two of a potted shrub, so birds have cover close by while they drink and bathe. Refresh the water every day or two in warm weather — this also stops it turning into a mosquito nursery. If you have space, a second dish raised on a couple of bricks will suit birds, while the ground-level one keeps hedgehogs and frogs happy. Never add anything to the water; plain tap water is fine.

Choose Native Plants for Caterpillars and Seed-Eaters

Nectar feeds adults, but caterpillars need leaves they recognise. Native plants support far more insect species than most ornamentals, and many of them grow perfectly well in pots. Good choices for containers include foxgloves (biennial, but worth the wait), yarrow, field scabious, red campion, wild marjoram, lady's bedstraw and bird's-foot trefoil. Grow them in a decent peat-free compost and expect them to be nibbled — that is the point. A pot of nettles tucked in a corner will be stripped by small tortoiseshell and peacock caterpillars, and it costs you nothing but a little space.

For birds, think seedheads and berries. Teasel produces architectural seedheads that goldfinches love. A compact crab apple in a large pot gives blossom for bees in spring and fruit for blackbirds in autumn. Ivy left to scramble up a wall or trellis is one of the best wildlife plants in Britain — late flowers for bees, dense cover for nesting and roosting, and berries in winter.

Build in Shelter and Somewhere to Overwinter

A tidy container garden can be a wildlife desert once the flowers fade. Leave the dead stems of perennials standing through winter and only cut them back in early spring — hollow stems are where many solitary bees and ladybirds spend the cold months. Resist the urge to clear fallen leaves from around your pots; lacewings and frogs use them.

You can also make a simple bee hotel by tying a bundle of hollow canes together and tucking it into a sheltered, south-facing spot near your pots. A small log or two behind the containers, half-buried in a corner, will be colonised by beetles and woodlice within a season. None of this needs to look scruffy — a little deliberate untidiness at the back of a border is easy to hide behind a good pot of grasses.

Simple Care That Keeps the Wildlife Coming

The maintenance is straightforward. Water in the morning so plants are hydrated before the heat of the day, and use a mulch of gravel or composted bark to slow evaporation — it also stops vine weevils and slugs reaching the stems. Feed hungry flowering plants every fortnight through summer with a diluted liquid feed, but keep it gentle; overfed plants make soft, sappy growth and fewer flowers.

Skip pesticides entirely. Aphids will arrive, and so will ladybirds and hoverfly larvae to deal with them, usually within a week or two. If a plant is genuinely overwhelmed, a strong jet of water is enough. Keep the water dish topped up, deadhead the annuals but leave the perennials to seed, and by this time next year you will have a small, busy, humming patch of habitat where once there was just paving.