Why the Bees Prefer the Scruffy Corner of Your Garden

There is a corner at the far end of my garden where the fence leans slightly and the paving runs out, and for years I considered it a failure. A clump of self-seeded borage that I kept meaning to move. A bundle of hollow fennel stems I kept meaning to clear. A mat of creeping thyme that spread without permission across a broken paving slab. Every summer I would look at it, feel mildly guilty, and find something more pressing to do. Then one July afternoon I stood still for long enough to notice that this particular patch of neglect was absolutely humming. Not metaphorically. Literally humming, with the low, purposeful sound of a dozen different bees working a single square metre of apparent disorder.

I have stopped feeling guilty about it since.

What the bees are actually looking for

The assumption most gardeners carry, usually without examining it, is that a well-tended garden is a generous one. Neat beds, deadheaded borders, mown edges: the impression of abundance. But abundance for whom? Many of our most manicured planting schemes, however beautiful to the human eye, offer bees a kind of glittering shop window with nothing much on the shelves. Double-flowered roses, for example, are genuinely lovely and genuinely useless to a bee trying to reach pollen. Hybrid bedding planted en masse may look generous but delivers little that a solitary bee can use.

What bees need, and what the scruffy corner provides with remarkable efficiency, is a combination of accessible nectar and pollen, shelter, nesting habitat, and continuity across the season. Solitary bees in particular, and Britain has around 250 native species of them, are quite specific in their requirements. Many nest in hollow stems, loose soil, or soft mortar. Several species line their cells with plant material: the patchwork leafcutter bee, Megachile centuncularis, cuts neat semicircles from the leaves of roses and wisteria. The hairy-footed flower bee, Anthophora plumipes, prefers soft mortar in old walls or bare patches in sunny banks. None of them are looking for a well-swept patio.

The case for hollow stems

If you have been cutting down your fennel, lovage, or Jerusalem artichoke stems to the ground each autumn and tidying them away, you have been removing what amounts to a block of flats. Hollow or pithy stems left standing through winter and into spring provide overwintering sites and nesting cavities for a range of solitary bees. Red mason bees (Osmia bicornis) and leafcutter bees will investigate any hollow stem of the right diameter, typically between four and ten millimetres, and provisioning begins in earnest from late spring through summer.

The practical adjustment is small. Cut stems in autumn if you prefer, but leave them at thirty centimetres or more rather than cutting to the base. Bundle them loosely and prop the bundle in a sheltered spot if the structural remains of the plant are too untidy to leave standing. A south or southwest-facing position gives the stems the warmth solitary bees need to encourage activity. This is the principle behind bought bee hotels, of course, though a bundle of your own garden stems costs nothing and requires no assembly.

Do resist the urge to put the bundle somewhere truly hidden. Bees need to find it. A spot with some visibility and a clear flight path is more useful than the tidiest corner of the shed.

Self-seeded herbs and what they know

The borage I mentioned, the clump I kept meaning to move, is by midsummer a considerable sprawl of starry blue flowers that would look quite intentional if I had planted it myself. Borage is, in the view of most bumblebees, one of the finest things in a garden. The flowers are deep and nectar-rich, perfectly shaped for the longer tongues of common carder bees and buff-tailed bumblebees, and they replenish their nectar rapidly after a visit. A single plant in flower will attract continuous attention from mid-June through to September if the summer stays warm.

Self-seeded herbs more broadly, including marjoram, thyme, lemon balm, and the occasional opportunist mint that has escaped its container, represent one of the most quietly productive things that can happen in a garden. They have chosen their own spot, which usually means the conditions suit them well, and they tend to flower freely because no one has been pruning them into submission. Allowing a small section of your herb border or path edge to run to flower rather than maintaining it in perpetual culinary neatness costs you almost nothing and pays in sustained pollinator activity throughout high summer.

The unmown edge and why it matters

Lawn management is one of the more contentious subjects in British gardening at the moment, and I have no intention of telling anyone they must let their entire lawn go to seed. But the unmown edge, a strip of perhaps thirty to forty centimetres left uncut along the fence line or beneath a hedge, is a different proposition. It is modest, manageable, and genuinely useful.

In a garden strip left alone from late April, you will typically find, depending on what seeds are already in the soil, a succession of low-growing clovers, selfheal (Prunella vulgaris), bird's-foot trefoil, and creeping thyme. These are the plants that white-tailed bumblebees and several species of mining bee seek most reliably. Bird's-foot trefoil alone is the larval food plant for several moth and butterfly species as well as offering rich forage for bees. It needs no sowing if the seed is already present in your soil; it simply needs you not to mow it.

The once-a-year cut, taken in late September when the flowering season is effectively over, keeps the strip from becoming impenetrable scrub and encourages the low-growing species to persist rather than being overtaken by coarser grasses. A strimmer run once at the end of the season is the full extent of the maintenance commitment.

Bare soil and the mining bee's requirements

One wildlife gardening oversight that even observant gardeners sometimes miss is the value of bare, well-drained soil in a sunny spot. Mining bees, which include the common tawny mining bee (Andrena fulva) with her fox-red thorax, nest in the ground. They require loose, undisturbed, south-facing soil with enough warmth for the nest to develop. A heavily mulched border, however admirable for moisture retention and weed suppression, can in practice make those spots unavailable.

This is not an argument against mulching generally. No-dig gardening and regular composting are sound practices for soil health, and the evidence from gardeners like Charles Dowding's work is compelling. But it is worth thinking about whether one small patch of your garden, a sun-baked bank, a crumbling path edge, an exposed slope, can be left deliberately bare and undisturbed from March through August. Tawny mining bees will find it if it is there, and the small craters of excavated soil they leave are a sign of success rather than a problem to solve.

Managing the disorder with a degree of intention

There is a difference between a garden that is genuinely neglected and one that has been arranged to look slightly more relaxed than it is. The latter takes more thought, though not necessarily more time. The aim is a garden that offers the structural diversity bees need: flowering at different heights, in different forms, across as long a season as possible, with some nesting and overwintering provision woven in.

Planting that genuinely helps in a British summer includes single-flowered dahlias, which are currently in bud in most gardens and will become one of the best late-season sources of pollen from August onwards. Echinops, the globe thistles, are a reliable magnet for bumblebees through July and August. Agastache, particularly the variety 'Black Adder', flowers for months and draws in bees from what seems like a considerable distance. None of these require the management style of an estate garden. They simply need to be there and to be allowed to flower fully before deadheading, if deadheading happens at all.

The companion planting logic that kitchen gardeners have long applied, putting pot marigolds, phacelia, and sweet alyssum between rows of vegetables to draw in pollinators, applies equally to the flower border. A few plants of phacelia tanacetifolia sown directly into a gap in June will flower within six weeks and produce a sustained display that honey bees in particular find irresistible. It germinates fast, costs almost nothing, and takes up little room.

What to do this month

July is a good time to take stock of what is actually flowering in the garden and which parts of it are attracting insects. Spend five minutes standing still near your borders on a warm afternoon and note which plants are receiving the most attention. That information is more useful than any planting guide, because it reflects the conditions and the bee population specific to your garden.

If you have fennel, lovage, or any large-stemmed perennial, consider marking it now as one to leave standing through autumn. Cut it at thirty centimetres rather than to the base when the time comes. If a corner of the garden has become a little raggedy and the borage has done something interesting with it, give it another few weeks before you intervene. The bees got there first, and they have been right about it all along.