Mistake 1: acting before checking irrigation and drainage
The first impulse is often to water deeply because the garden looks dry. Yet in autumn many plants show wilting leaves because of waterlogging after weeks of poorly adjusted automatic irrigation, or because compacted soil cannot drain. Before touching the controller, check moisture a hand's depth down in several spots and see whether puddles persist after rain or watering.
A typical error is keeping the summer watering schedule through September and October. The result shows in hedges with yellow patches and in waterlogged tree basins. The sensible correction is to reduce frequency, check for blocked sprinklers and open compacted soil with surface aeration before adding more water.
- Carry out a simple infiltration test: pour a bucket of water in one spot and time how long it takes to disappear.
- Check the irrigation controller before the plants: it is often the source of the problem.
Mistake 2: pruning everything at once without judgement
Faced with a neglected garden, the temptation is to tidy hedges, shrubs and trees on the same day. In autumn this is risky: some Mediterranean species are still closing their growth cycle, and severe pruning leaves them exposed to early cold and short of reserves. Cutting without studying the structure also makes it hard to see which branches are worth keeping.
Another frequent fault is leaving stumps and thick cuts untreated, which become entry points for fungi. Prioritise safety first: dead, crossing or structurally threatening branches. The rest can wait and be done in stages, checking how plants respond over the following weeks.
- Start with what is dead, broken or in the way; the purely decorative work can wait.
- Do not prune hedges with autumn flowering before they have finished blooming.
Mistake 3: replanting without correcting the soil
Many neglected gardens have compacted soil, layers of plant debris and poor drainage. Planting new specimens without correcting that is a common error: the plant gets a good planting hole, but its roots cannot spread. In clay soils water collects and rots roots; in sandy soils it dries out too quickly.
The solution is not to add layers of material without mixing them in. Break up the compacted layer, work organic matter into the volume the roots will occupy, and check how water behaves before planting. In Sotogrande gardens with wind and often poor soils, it is also worth protecting young plantings from wind and checking irrigation in the first weeks.
In Estepona, where slopes and heavy winter rain are common, check that water drains away from new planting positions rather than pooling around them.
Mistake 4: ignoring weeds as an indicator
Weeds are not just an aesthetic problem: they indicate soil conditions. Abundant broad-leaved species in shady areas suggest excess moisture; others appear in compacted or poor soils. Pulling everything without reading that information wastes a useful clue.
Another error is applying herbicides indiscriminately or without following the manufacturer's instructions. In gardens with old hedges, trees and drip irrigation, selective hand weeding is usually safer. Remove weeds before they set seed and mulch cleared areas to reduce their return.
Mistake 5: neglecting irrigation in the recovered garden
After clearing and pruning, it is common to leave irrigation as it was or, conversely, to increase it because the garden looks more exposed. In autumn water demand falls, but wind and cooler nights change consumption. A frequent error is watering little and often, which encourages shallow roots.
Adjust frequency, check the uniformity of drip irrigation and inspect blocked emitters. For recovered hedges, water less often and more deeply. A gardener in Marbella knows that at this time of year too much water is as damaging as drought.
Mistake 6: replacing plants without diagnosing
When a plant dies, the quick reaction is to buy another and put it in the same spot. If the cause was poor drainage or the wrong exposure, the new plant will repeat the failure. Before replacing, review the soil, the watering history and the orientation.
In Sotogrande, exposure to wind and airborne salt shapes which species thrive. Choosing plants suited to the site reduces future maintenance. It is better to leave a gap empty for a season than to repeat a planting error.
Mistake 7: not planning recovery in phases
Trying to make everything perfect in a week leads to rushed decisions: planting at the wrong moment, over-pruning or installing irrigation without checking pressures. Reviving a neglected garden is better organised by zones and priorities: safety, irrigation and soil first; then sanitary pruning; then planting and sowing.
Keep a simple record of what you do and how plants respond, so you can correct course. In autumn, save lawn sowing and shrub planting for when the soil is moist but not waterlogged.