Mistake 1: ignoring wind direction when choosing plants
One of the most common errors is selecting species for their appearance without observing how the wind reaches the water surface. On a plot in Estepona with a prevailing westerly wind, a tall hedge placed to the west can turn the pool into a trap for leaves and twigs. The answer is not to remove the planting but to tier it: small-leaved evergreens in the front line, with deciduous or large-leaved species set further back.
It is worth spending several days observing at different hours. A fig tree close to the pool may look picturesque, but in autumn it can fill the skimmer within hours. If you want to keep it, position it downwind and with a strip of gravel or paving that makes sweeping easier.
- Note wind direction and leaf fall over a week before deciding on new planting.
- Prioritise small-leaved, fine-textured species immediately around the pool.
Mistake 2: failing to plan paving drainage
Rainwater running across the pool terrace can carry soil, leaves and mulch residue. If the paving lacks sufficient fall or the drains are blocked, dirty water ends up in the pool or puddles around the loungers. In autumn, with heavier rain, this error becomes obvious.
The solution is to check grates and clean channels before the first rains. Leaving a gravel strip between garden and paving also helps, letting water infiltrate before it reaches the pool. In Marbella, where many terraces combine stone and lawn, mulch frequently ends up on the pool floor unless a physical barrier is installed.
- Check the fall with a spirit level: it should lead water away from the pool, not toward it.
- Clean drainage grates before the autumn rains begin.
Mistake 3: neglecting leaf clearing at the right time
Waiting until leaf fall is over to clean the pool is a frequent error. Leaves that accumulate over days decompose, stain the finish and overload the filter. In Sotogrande, with damp nights and still-warm days, organic matter breaks down quickly. The practical approach is to skim floating leaves every two or three days rather than waiting for the floor to become covered.
This is not about obsessive cleaning but about preventing the filtration system from working overtime. A clean skimmer and a hand net kept near the pool solve much of the problem. If deciduous trees are nearby, a temporary protective mesh over the pool can help during peak leaf fall.
- Remove floating leaves before they sink; it is quicker and protects the filter.
- Check the skimmer after every spell of wind or rain.
Mistake 4: poorly calculated shade that encourages algae and damp
Shade from a tree or pergola can be a relief in summer, but in autumn a pool area that is too shaded and poorly ventilated slows evaporation and encourages algae on walls and steps. The error is planting dense-canopied trees directly south or south-west of the pool without planning for ventilation.
Before adding shade, observe how many hours of direct sun the water receives and whether a breeze runs. In Estepona, an opaque-roofed pergola over the pool can be counterproductive without air movement. Better to choose structures that allow wind through, or light-shade, deciduous species that let light pass in autumn.
- Leave at least one side open so the pool receives natural ventilation.
- Favour light, deciduous shade over the pool; reserve dense evergreens for areas further away.
Mistake 5: not coordinating garden watering with pool cleaning
In autumn, garden watering should be adjusted to rainfall and lower plant demand. A common error is keeping the same summer schedule and, worse, watering just before cleaning the pool. Irrigation water splashing onto paving carries soil and leaves toward the pool, multiplying the work.
Coordination is simple: reduce watering frequency, irrigate early in the day and avoid doing so on the same day as pool cleaning. If there are sprinklers near the pool, check that the spray does not reach the paving. Adjusting nozzles and reviewing the controller prevents unnecessary run-off. As a guide, in a Marbella home with lawn and pool close together, moving from daily watering to twice a week in autumn noticeably reduces the soil entering the water.
- Adjust the irrigation controller according to rainfall and lower autumn demand.
- Check the aim of sprinklers near the pool so they do not wet the paving.
Mistake 6: choosing plants that attract insects without control
This is not about giving up biodiversity, but about avoiding species that attract pests right beside the bathing area. A classic example is very bee-friendly plants prone to aphids, which in autumn can leave sticky residue on paving and attract wasps. Coordination means placing these species at the far end of the garden or in pots away from the pool.
If you want a pollinator garden, concentrate herbs and flowers in a separate bed screened by a gravel path. This way you enjoy biodiversity without turning the pool into an insect hotspot. Observing plants before buying and consulting a local nursery helps avoid surprises.
- Place highly bee-friendly plants away from the lounger area and the pool.
- Leave a strip of gravel or paving between the bed and the pool to create a visual and physical barrier.
Mistake 7: neglecting pool upkeep in autumn
Assuming the pool maintains itself in autumn is a mistake. Although use declines, leaves, rain and mild temperatures demand regular checks. A pool without adequate circulation accumulates sediment and can develop cloudy water. This is not about applying chemical treatments without judgement, but about maintaining filtration and physical cleaning.
In Sotogrande, where many pools are covered with a cover in autumn, check that the cover does not collect water and that the filtration system still runs for a few hours a day. Coordinating with the garden also means removing leaves from the cover before it degrades. A simple weekly task calendar prevents upkeep from becoming an emergency.
- Keep filtration running for a few hours a day even when you are not swimming.
- Check and clean the pool cover after every rain or wind event.