Thônex is a residential municipality east of Geneva, on the French border, with many villa gardens on its hillside. Finding a gardener in Thônex means entrusting a local professional with the regular upkeep, pruning, restoration or creation of a garden suited to your plot. You describe your work, and a landscape gardener contacts you.
Climate and terrain in Thônex
The climate is that of the Lake Geneva basin: fairly mild winters, hot dry summers, and the bise, a cold north-easterly wind that can blow hard and dry out exposed plants. Gardens in the municipality generally enjoy plenty of sun, especially on the south-west-facing hillside, from which the Salève can sometimes be seen.
The relief is one of Thônex’s particularities. Many properties are stepped down the slope, from the historic village to residential districts such as Fossard or Mon-Idée. A sloping plot calls for thought about water run-off, soil stability and machinery access.
In the canton of Geneva, soils are often clay. In winter and spring they stay heavy and hold water; in summer they harden and crack. A good gardener takes this into account for drainage, soil improvement and the choice of plants.
The gardening year in Thônex
Spring
As soon as the ground has dried out, it is time to clear the beds, prune summer-flowering shrubs, patch the lawn and prepare planting. On clay soil, it is better to wait until it no longer sticks to tools before working it. The first mow of the season should not be cut too short.
Summer
Hot, dry summers mean watering deeply and sensibly, preferably early in the morning. On a well-exposed slope, water runs off quickly and the soil dries out: mulch protects it. This is also the time for the second hedge trim and for regular mowing, slightly higher in a drought.
Autumn
This is the ideal season for planting trees and shrubs, as the soil is still warm and the rain returns. Leaves are cleared because they smother the lawn if left (see our guide to clearing autumn leaves), the turf is aerated and retaining or landscaping work is prepared before the frosts.
Winter
Winters are generally mild near the lake, but the bise stays sharp. Dormant vegetation is a good time for pruning and structural tree work, as well as earthworks when the ground is not waterlogged. On clay soil, avoid trampling sodden ground.
The most requested work in Thônex
Garden maintenance
Large villa gardens need regular attention: mowing, weeding, cleaning beds, light pruning and removal of green waste. A garden maintenance plan spread over the year keeps things under control, especially when the plot is large or sloping. The gardener adapts visits to the seasons.
Hedge trimming
Properties are often bounded by hedges that quickly gain height. Hedge trimming is generally done once or twice a year, with particular care for a boundary hedge, which also affects your neighbour. A professional has the equipment for long runs and great heights.
Tree pruning and removal
Residential districts have fine trees, sometimes imposing, close to houses and roofs. Tree pruning and removal require know-how and suitable equipment, particularly on sloping ground. The gardener assesses the condition of the tree and what is possible.
Gabions and retaining walls
On the hillside, holding back the soil is often the first question. A gabion or retaining wall makes it possible to create flat terraces, stabilise a bank and gain usable space. The choice of material and drainage depends on the slope and the clay soil.
Wooden or stone terrace
With the sunshine on the hillside and the view of the Salève, a wooden or stone terrace quickly becomes the summer living room. On a slope, it often fits onto a level created by a wall. The surface is chosen according to exposure, the upkeep you want and the style of the house.
Automatic irrigation
Dry summers and sun on the slopes make hand watering a chore. A well-set automatic irrigation system delivers water at the right time, avoids waste and looks after your plants while you are away.
Things to check before certain work
Some garden work is regulated. For felling a tree, trimming a boundary hedge or building a pergola, shelter, wall or pool, the rules depend on the canton and the municipal regulations. Check with the municipality before starting; the professional working for you can guide you through these steps.
Making a request
- You describe your work online: type of garden, current state, what you would like.
- A professional landscape gardener from the region contacts you and visits the garden if needed.
- You receive a free quote and are free to accept it or not.
To get started, you can request a quote.
Around Thônex
If you have work in neighbouring municipalities or elsewhere in the canton, see the page on gardener-landscaper in Geneva, as well as the canton page: gardener in the canton of Geneva. You can also find all the areas covered in French-speaking Switzerland.
Frequently asked questions
How can I landscape a sloping garden in Thônex?
The hillside lends itself well to terracing, held by walls or gabions. Ground-cover plants stabilise the banks between levels, and drainage stops water building up behind the structures. A landscape gardener assesses the slope on site before proposing a solution.
What should I do about clay soil in my garden in Thônex?
Clay soil is rich but heavy: it sticks in winter and hardens in summer. It is improved with compost and coarse sand, it should not be worked when sodden, and drainage needs attention. The gardener also chooses plants that tolerate this type of soil well.
When should I trim hedges in Thônex?
Trimming is most often done once or twice a year, depending on the species and the vigour of the hedge. Hot, dry summers slow growth during the season. Your gardener will advise the best rhythm for your plants.
How can I protect my garden from the bise and summer drought?
A well-chosen hedge, mulch at the foot of plants and regular but deep watering limit the damage. On an exposed hillside, it helps to group plants according to their water needs. Automatic irrigation can make this easier to manage.
Can I entrust the annual upkeep of my garden to a professional in Thônex?
Yes, it is a common request for large properties and second homes. The gardener offers visits adapted to the seasons: mowing, pruning, weeding, autumn clear-up. The frequency and content are set out in the free, no-obligation quote.