When a mole invades a garden, it never goes unnoticed. Mounds of earth, underground galleries, damaged lawns… The carnage can be swift, especially in rich, well-kept soils. And yet, despite their bad reputation, these little beasts are only interested in surviving.
Does this mean we need to bring out the chemical artillery? Not really. Because, in addition to often being ineffective in the long term, toxic products pose real ecological problems. They pollute the soil, endanger other – sometimes useful – species and sometimes even find their way into our water tables.
Fortunately, there are natural solutions. They’re gentler, longer-lasting and often smarter too. Here’s how to keep moles at bay without compromising the health of your garden or its inhabitants.
Understanding mole behavior
Before going to war, it’s best to get to know your “enemy”. Despite its image as a saboteur of flower beds, the mole also plays a role in the ecosystem. They aerate the soil, regulate certain insects and contribute to the biodiversity of the subsoil.
But here’s the thing: when it feels comfortable, it settles in. It digs, it hunts, it digs some more… What is it looking for? Loose soil, rich in worms and larvae. A well-tended garden becomes a veritable all-you-can-eat buffet.
Understanding this is already a step towards more intelligent solutions. It’s not a question of destroying, but of making the place less attractive.
Designing the garden to deter them
The first thing to do is to make the garden less “comfortable” for moles. It’s not a question of sabotaging your garden, of course, but of using a few simple levers.
Fewer larvae and insects mean fewer reasons for them to dig. Consider using nematodes (microscopic worms), which parasitize cockchafer and crane fly larvae. They are harmless to plants and help to reduce the soil’s need for animal proteins.
Tamping down certain at-risk areas can also make a difference. Soil that’s too loose is a highway for moles. And don’t forget to drain wet areas – moles love soggy ground.
Use repellent plants
Nature has thought of everything, including plants that moles don’t really like. Some give off odors or substances that naturally repel them.
Spurge, for example, is a formidable ally. So are garlic, onions, castor-oil (toxic!) and daffodils. These plants, planted along the edges or in strategic places in the garden, create natural barriers.
They won’t frighten away a colony overnight, but they do send a clear message: “it’s not very welcoming here”. And combined with other practices, it can really help to restore a little peace and quiet.
Install natural, non-invasive devices
Moles are sensitive to vibrations. They don’t have very good eyesight, but they have a very good sense of what’s going on in the ground. That’s where you can play it smart.
Some solar-powered devices emit ultrasound or pulses that disturb them. Not dangerous, not invasive. More homemade versions also exist: a plastic bottle planted in the ground, neck down, vibrates at the slightest gust of wind. The same principle applies to windmills planted in the ground.
Does it work every time? No. But combined with other methods, it’s often enough to make the mole realize that it’s better to look elsewhere.
Encouraging natural predators
What if the solution simply came from… the food chain? Certain animals love moles. The hedgehog, for example, or the barn owl. Even cats are sometimes interested in them (well, not all of them, some prefer the sofa…).
By encouraging their presence, you reinforce the balance of your garden. A pile of wood in a corner for hedgehogs, a nesting box for an owl, a few corners left “wild”… These are simple but useful gestures.
At the end of the day, it’s not about controlling nature, but intelligently accompanying it.
Making respectful traps
Sometimes, despite everything, a mole that has become too established becomes a real problem. In such cases, there are traps that don’t kill. Toggle traps, for example, capture the mole without harming it.
The mole is then released in a wood or meadow, far from any habitation. However, you need to be patient, as moles are malignant and you may have to reposition the device several times before you get any results.
You should also check your traps regularly. It’s not a question of capturing to let them suffer, but of capturing to relocate them.
In conclusion, there is no miracle solution. Just a combination of tricks, observation and patience. And above all, a determination not to give in to the ease of poisons.
Moles are part of the living world. They’re neither bad nor useless. They’re just looking for a quiet place to live. The aim is not necessarily to eradicate them, but to make them understand that this garden is not the right place.
It’s up to you to find the right balance between respecting nature and protecting your own space. But one thing’s for sure: the garden will be all the better for it.
