Premium Gardening Services in Belgravia

A planted wall in a small SW1X courtyard looks like horticulture and is really plumbing. Behind the foliage sits a grid of modules or felt pockets holding a few litres of medium each, fed by a drip line along the top, a solenoid valve, a timer and usually a dosing unit that puts liquid feed into the supply. Nothing on it can reach soil, send a root anywhere or find its own water. When one of these fails, and a good number do within three or four years, the cause is almost always in the irrigation rather than in the planting.

Why the top row goes first

Water is delivered at the top and works downward, so the upper modules have the shortest contact time and dry first, while the lowest rows can sit permanently wet. A line of bare or crisped plants across the top of an otherwise healthy wall is therefore a symptom of flow rather than of the plants being wrong. Emitters block with scale and with particles from the feed itself, and the remedy is flushing the line and clearing or replacing individual emitters rather than increasing the run time, which simply drowns the bottom.

Watering that ignores the weather

A wall is irrigated all year, including through winter, because a sheltered courtyard wall in a dense city gets little rain on it and the medium holds almost no reserve. Run times shorten in the cold months rather than stopping, and a timer left on a summer schedule in November is as damaging as one switched off. The other regular error is watering in short frequent bursts; longer, less frequent cycles wet the full depth of each module instead of the surface.

Feed, and the salts it leaves behind

With no soil to draw on, everything the plants need arrives dissolved. A dosing unit is checked and refilled on a schedule, and the strength matters, since too weak produces the yellowing between leaf veins that is usually blamed on shade, and too strong burns roots and leaves a white crust on the face of the modules. Two or three times a year the system is flushed with plain water to move accumulated salts through, and the drainage channel at the base is cleared at the same time. Run-off and the residue it carries mark the paving beneath, which is cleaned at intervals by same-day pressure washing in Belgravia.

Keeping the planting inside its squares

A living wall is a designed pattern, and it stops reading as one the moment a vigorous plant colonises its neighbours. Clipping is done little and often, by hand, to hold each variety within its area rather than to shape the wall as a whole. Individual plants that fail are replaced module by module with the same variety at a similar size, and matching is easier if a note of the original planting plan is kept. A wall left unpruned for a year is far harder to bring back than one attended to monthly, and the same little-and-often principle governs the clipped planting in courtyards nearby covered by vetted gardening services in Brompton.

Frost, damp and the wall behind

Exposed pipework and a manifold are lagged before winter and the system is set to avoid running in a hard freeze, because a burst line behind a planted face is not discovered until it has run for some time. The structure itself is separated from the planting by a waterproof layer, and any staining appearing on the inside of the building is investigated immediately rather than treated as a decorating problem. The permanently damp, sheltered cavity behind a panelled system is also attractive shelter at ground level, and anything that establishes itself there becomes a matter for pest control for homes in Belgravia.

How maintenance is arranged

These systems need monthly attention rather than seasonal visits, and the work is short each time: check the controller, run a cycle and watch it, clear blocked emitters, top up the feed, clip, replace failures and clear the drain. Visits are quoted on the area of the wall and on how it is reached, since anything above the first two metres needs a tower or a platform rather than a ladder. Replacement plants and modules arrive in quantity and are brought in through man and van across Knightsbridge. Keeping the valve, timer and stopcock accessible, and a written record of the schedule and the feed used, saves far more time than anything else, and the way regular visits are organised is explained on our nationwide service.