Gardening Services Near You in Charlton

A lavender hedge planted along a path gives about eight good years and then, quite suddenly, looks dreadful: bare grey stems at the base, a split down the middle where the plants have fallen open, and flowers only on the outer few centimetres. Nothing has gone wrong. Lavender and its relatives are short-lived sub-shrubs that behave in a specific way, and once that behaviour is understood the maintenance becomes obvious and the disappointment avoidable. The free-draining, gravelly ground on the higher parts of SE7 suits these plants better than most London gardens do.

Why they fall apart

A sub-shrub makes woody stems but does not renew them. Each year's growth extends from the previous year's tips, so the plant gets progressively taller and barer at the base, and the weight of the top eventually splits the crown open. Crucially, most of them will not break from old brown wood. Cut back into it and nothing happens; the stub simply dies. That single fact governs every decision about pruning, renovation and replacement.

Two cuts a year, and where the blade goes

The main cut follows flowering, in late summer, and takes the plant back to a tight dome while leaving two or three centimetres of green growth on every stem. The second is a light tidy in spring, removing anything killed over winter. The shape matters because a dome sheds rain and holds its own structure, whereas a flat top opens up under snow and wet. Cutting late in autumn is a mistake, since soft regrowth has no time to harden before frost. The test is simple: if the cut is going into bare brown wood with no leaves below it, it is too low.

The family, and how far each will take it

Lavender is the least forgiving. Rosemary tolerates a little more and can be reduced gradually over two or three seasons if some green remains below each cut. Santolina, thyme and helichrysum behave much like lavender. Sage is the exception and will usually break from older wood, though it still gets leggy and is best replaced every few years. Hyssop and winter savory sit between the two. Where a mixed planting of these runs along a path, they are cut individually rather than sheared as one.

Winter wet, not winter cold

These are plants from thin, sharply drained, sunbaked ground, and almost all the losses in a London garden happen between November and March in soil that stays wet. They are planted slightly proud, mulched with grit or gravel rather than bark or compost, and never fed generously, because rich soil produces soft growth that rots. A position in full sun with air moving around the plants does more for their lifespan than anything done with secateurs. Planting them where they overhang paving is fine, though the grit mulch inevitably migrates across it, which is dealt with by pressure washing prices in Charlton.

Renovation, honestly

There is no reliable way to rejuvenate a lavender that has gone bare at the base. What can be done is layering, pegging a low outer stem down into soil so it roots and becomes a new plant while still attached, which takes a season and produces something genuinely young. Otherwise replacement is the answer, and it is worth doing in sections so a hedge is never entirely bare. Cuttings taken in late summer from non-flowering shoots root easily and cost nothing, which turns replacement from an expense into a routine. A hedge of any length coming out generates a surprising bulk of woody material, and clearing that is arranged through waste removal across Blackheath.

What lives underneath an old one

An aged, sprawling sub-shrub against a warm wall creates exactly the dry, sheltered, undisturbed ground-level cover that small mammals look for, and the older and barer the plant, the better the cover. Where that runs up to the base of a house, it is worth keeping a clear strip between the planting and the wall; once anything has moved from there into the building, the matter passes to pest control for flats in Charlton.

How the work fits the year

These plants need two short visits rather than continuous attention, and the late-summer cut is the one that cannot be missed without consequences. Work is quoted by duration or by the length of hedge, and a replanting phase is priced separately because it involves stock and ground preparation. Gardens with similar free-draining conditions further east are looked after the same way by our gardening service in Southend, and the way a seasonal schedule is put together is explained on local hedge trimming.