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What to Do About Slugs? 10 Effective Strategies to Protect Your Garden

What to do about slugs

Ever felt like you’re waging a losing battle against an army of slugs in your garden? Like each night, they creep out from their hidey holes and feast on your lovingly nurtured plants?

Don’t fret. You aren’t alone. I’ve fought the same battle in my garden!

But what if I told you that there are ways to protect your garden from these slimy invaders without the need for harsh chemicals? That’s right!

I’m not promising overnight miracles. But stick around because I guarantee you’ll be armed with enough knowledge to start turning the tide in this relentless slug war!

1. What to Do About Slugs? Create a Balanced Ecosystem

Building a balanced and robust garden environment can be your secret weapon against slugs. By inviting in certain wildlife, you’ll get help controlling the slug population.

Common frog in garden

Frogs, for example, are great allies. They have an insatiable craving for slugs. Encourage them into your garden by adding small ponds or damp areas.

Our pond: a wonderful hub for wildlife.

Hedgehogs too are fantastic slug munchers. Providing hedgehog-friendly habitats like log piles or purpose-built hedgehog houses will give these prickly pals more reason to visit.

Hedgehog on Grass

Birds also love to eat slugs. Planting native trees and shrubs that provide cover and nesting sites can make your space appealing to birds.

  • Note: Remember not to use harmful chemicals in your garden – they’re bad news for this helpful wildlife,
  • If you’ve got room, chickens and ducks love snacking on slugs as well – just remember to protect any plants you don’t want nibbled at by feathered friends.

2. Create Slug Free Zones with Barriers

Creating habitats for wildlife is a wonderful thing to do. However, it often attracts slugs, which can be problematic for gardeners. I have experienced this in my own garden, despite having plenty of frogs and birds, slugs still managed to thrive. So, I came up with a solution to create slug-free zones for my most delicate plants.

And I do this by using barriers – a physical deterrent that keeps these slimy creatures at bay.

Raised beds are one of your best friends when it comes to slug control. Not only do they make for easy gardening, but they also serve as excellent barriers against slugs according to RHS. It’s like creating your own little fortress.

Copper on the Edge of Raised Bed

raised beds
Raised beds lined with copper tape in my garden.

To begin with, you need copper tape around the edge of each bed. Slugs hate crossing these materials because they give off tiny electric shocks or dry out their bodies respectively. This deters them from reaching and munching on your precious plants.

It’s also a great idea to use a copper ring or mesh around individual vulnerable plants.

Path Around: Your Second Line of Defence

The path surrounding raised beds should be considered too. Gravel paths work wonders because slugs detest crossing rough surfaces.

Prickly Barrier

Oyster Shells

Create a prickly barrier around your veg growing area. You could use

  • Egg Shells,
  • Oyster Shells,
  • Bramble or Holly Prunings,
  • Strulch,
  • Sharp Sand,
  • Wool Pellets,
  • Horticultural Grit.

Slippery Barrier

Spraying a lubricant such as WD40 on the outside of plant pots or raised beds will make the surface too slippery for the slugs.

Create a Moat

If you want to protect your young plants or seedlings from slugs, place them on a table. Next, immerse the feet of the table in a container filled with salty water. This creates a barrier that slugs will avoid crossing.

With this simple trick, you can create a completely slug-free growing zone on top of the table. This can be very useful, especially in a wet spring. You can now put containers on the table and grow young seedlings or salads without worrying about any slugs ruining your plants.

3. Remove Shelter

Construction debris lies in the garden

The concept of ‘shelter removal’ might sound a bit drastic, but it’s all about tidying up. If you leave out piles of leaves and debris, don’t be surprised when the slugs come round for tea.

Slugs adore dark, damp places during the day where they can avoid their natural predators. This includes under pots, planks of wood or heaps of leafy matter. By cleaning up these areas, we take away their cosy hiding spots.

Simply relocate organic waste to designated composting areas far from vulnerable plants.

Garden Maintenance Matters

Mulching with straw or other organic materials provides essential nutrients to soil and plants while also improving water retention – brilliant. But beware: thick layers can create slug heaven on earth.

To help keep our squishy friends at bay whilst maintaining mulch benefits use thin layers instead – making it less attractive as a daytime hideaway spot.

Cleanliness extends beyond just removing potential shelters too – regular hoeing disturbs any eggs laid by adult slugs before they get a chance to hatch into future plant munchers.

It’s also important to keep your plants tidy by removing any yellowing or diseased leaves that might attract slugs.

Every little helps when protecting our precious seedlings!

4. Let Seedlings Grow to Semi-Maturity Before Planting Out

Kale seedlings

Getting your seedlings to a semi-mature stage before planting out can give them a fighting chance against slugs. It’s like sending an adult, not a child, into battle. You wouldn’t want your tender little plants being devoured now would you?

This strategy has two-fold benefits: it makes the young plant less attractive to slugs and gives it the strength needed for survival even if attacked.

The rule of thumb is this: bigger is better. A larger leaf surface area helps with photosynthesis while thicker stems make munching more work for our slimy foes.

  • Sow seeds indoors or in protected areas away from slug damage.
  • Carefully monitor growth conditions – water regularly but avoid overwatering as moist soil attracts slugs.
  • Harden off seedlings gradually by exposing them slowly to outdoor conditions before transplanting them fully outdoors.

Your patience will pay dividends when your matured seedlings grow robustly into resistant plants despite potential slug attacks. Now that’s something worth waiting for.

5. Create a Polyculture

A vibrant polyculture of vegetables and flowers in my garden.

One of the most effective ways to deter slugs is to create a polyculture. But what’s that, you ask? Well, it’s about planting an array of different plants together rather than sticking with just one type.

This isn’t some avant-garde gardening trend; it’s based on solid scientific research. It shows that plant diversity can reduce slug damage by making your garden less appealing and more difficult for them to navigate.

Think of your garden as a buffet table. If there are only lettuce leaves available (slugs’ favourite), they’ll munch away happily. However, if you mix in other plants like fennel, rosemary, mint, onions and garlic – which they dislike – they’ll be less likely to stick around for dinner.

Peppermint leaves
  • Fennel acts as a natural deterrent against slugs due to its strong scent.
  • Rosemary gives off an aroma that these pesky creatures find repelling – bonus points because it adds flavourful herbs to your kitchen too.
  • Mint might freshen up our breath but believe me when I say slugs aren’t fans. They hate its smell so use this aromatic herb liberally around susceptible veggies.
  • Onions, garlic, leeks and chives are all part of the Allium family. These plants contain a chemical called allicin, which is harmful to slugs if ingested. This makes them an ideal choice for planting as a barrier in vegetable gardens or flower borders.

Moreover, integrating flowers into vegetable patches attracts beneficial insects such as ground beetles. This study shows that slugs tend to form a significant part of their diet. So, let’s give those beetles what they want.

6. Apply Nematodes to Reduce Slug Population

Nematodes, microscopic creatures with a big appetite for slugs, can be your secret weapon in the fight against these pesky garden pests. Despite their diminutive size, nematodes should not be underestimated as they can have a huge impact on the slug population.

You might ask yourself how something so small can help control a problem as big as slugs? The answer lies in their lifecycle. Nematodes enter slugs and release bacteria that cause a fatal disease. It’s not exactly a pleasant dinner conversation, but it’s mighty effective.

The RHS explains this process well if you fancy more details on the science behind it all.

The best part is they’re safe for use around pets and wildlife because they only target specific pests like our slimy friends here.

  • To get started with nematode treatment, purchase them from reputable garden centres or online suppliers.
  • Mix the product as directed by the seller.
  • Spray or water onto affected areas during cool parts of the day (morning/evening) when slugs are active – timing is key.

Remember: One application isn’t enough. To make sure of long-lasting effects, repeat applications every six weeks during warm weather periods when those pesky molluscs are most rampant.

P.S. Don’t forget – keeping other natural predators happy will also keep slug numbers in check.

7. Lure and Pick Them Up

When it comes to slugs, they’re quite like us. They enjoy a good meal, especially when the menu includes things we cherish in our garden.

But don’t worry. There’s a cheeky method that might just do the trick: luring these slimy critters out of their hideouts for an easy pick. It’s time to turn the tables on those gastropods.

To get started, all you need is some tasty slug bait. Something as simple as overripe fruit or vegetable peelings can work wonders – they’ll be too busy chowing down to notice your approach. For extra efficiency, try using beer traps recommended by the RHS.

Beer trap
  • Bait: Lay pieces of grapefruit rind or cabbage leaves in the garden after dusk to attract slugs.
  • Pick: Once attracted by the scent of food, manually remove and dispose of them safely.

The RHS advises against killing slugs with salt in the garden because this can increase soil salinity which is harmful for plants.

This hands-on approach isn’t everyone’s cuppa tea due to its somewhat ‘icky’ nature but remember: organic gardening often calls for getting up close with Mother Nature – even her less appealing aspects.

8. Feed them bran

Now, you might be wondering: feed slugs? But it’s a simple trick that works wonders. The thing about bran is, slugs love it. They can’t resist the stuff. It’s like catnip for cats or chocolate for us humans.

The idea here isn’t to start a slug-feeding programme but rather to use their own gluttony against them. When they consume bran, they bloat up and die – not pretty, but very effective in reducing their numbers in your garden.

All you need to do is sprinkle some dry bran around your plants just before dusk when these slimy critters start their night-time patrol. They’ll get lured by the irresistible scent of the grain and gorge themselves on it until they can no longer move.

  • This method is cheap.
  • It’s non-toxic and perfectly safe if there are pets or children nearby.
  • Bran acts as an organic fertilizer adding nutrients back into the soil after breaking down over time.

9. Use a Garlic Spray


Garlic isn’t just for fending off vampires, it’s also handy in the garden. A homemade garlic spray can be an effective and organic way to keep slugs at bay.

Finely chop or crush the garlic and mix with two cups of water to make your own garlic concoction. Let this mixture sit overnight to really let those anti-slug properties infuse.

In the morning, strain out any solid bits using a fine mesh sieve or cheesecloth. Pour your potent brew into a spray bottle, ready for action.

The beauty of this method is its simplicity – simply give your plants a good spritzing every couple of days. Slugs aren’t fans of strong odours like that from our trusty Allium sativum (that’s science talk for ‘garlic’). The scent confuses them, disrupting their slimy dinner plans.

You may find that after rain you’ll need to reapply as it can wash away some effectiveness.

So, give garlic spray a try. It’s cheap, it’s easy to make and most importantly – slugs can’t stand the stuff.

10. The Importance of Timing Your Watering

Watering the Garden

A crucial aspect often overlooked when dealing with slugs is watering time. Slugs are nocturnal creatures; they come out at night when the temperature drops and humidity rises. If you water your garden in the evening or late afternoon, it creates ideal conditions for these pests.

By switching your watering routine to morning hours instead (the RHS recommends this too), you give the soil enough time to dry before dusk falls. This simple change could significantly decrease slug activity since they prefer moist environments.

How about Organic Slug Pellets?

Slug Pellets

They’re a great option for those who are looking for a more environmentally friendly way to control slugs in their gardens. These pellets are made from natural ingredients such as iron phosphate, which is much less harmful to the environment and wildlife.

However, it’s essential to keep in mind that while organic pellets are a step in the right direction, they’re not without their drawbacks.

Applying them can unintentionally harm beneficial insects like beetles and ground beetles, which are essential for keeping other pests under control.

Additionally, the pellets can have a long-term impact on soil health.

So, if you do decide to use organic slug pellets, it’s best to do so sparingly as a last resort and to focus on ecologically friendly gardening practices to maintain a harmonious garden ecosystem!


Turning the tide in your relentless slug war is no easy feat. However, patience and knowledge can lead to success.

Create that healthy ecosystem, call upon frogs and hedgehogs for help. Clean up debris to remove their hiding places, let seedlings grow before planting out – every step counts.

Polycultures repel slugs naturally while nematodes reduce their population significantly.

Lure them, pick them or feed them bran – whatever works best for you!

If all else fails? Don’t forget about garlic spray. It’s potent stuff!

You now know what to do about slugs without resorting to harmful chemicals… and it feels good right?

Frequently Asked Questions

What is the quickest way to get rid of slugs?

The quickest way to get rid of slugs is to use nematodes. They’re microscopic worms that infect and kill slugs, without harming other wildlife.

What makes slugs go away?

Create a healthy ecosystem with slug predators like birds, hedgehogs, or ducks. Removing shelters such as debris also deters them from your garden.

What is the best thing to stop slugs?

The best thing to stop slugs is combining several strategies: Use barriers around vulnerable plants, apply nematodes, lure and pick them up manually or use repellent plants in polyculture systems.

Should I kill slugs?

No need for killing. Slugs play an important role in breaking down organic matter. Instead, focus on controlling their population naturally so they don’t damage your crops too much.