Getting rid of slugs in the garden may seem like an impossible task, but it can be done! In this post, you’ll learn all about slugs: their life cycle, feeding habits and damage, where they come from, and more. Then I’ll give you tons of tips to help you control slugs so you can ultimately eliminate them.
Slugs are one of the most destructive and frustrating garden pests there is. They hide during the day and come out at night to feast on your garden.
So, your plants will be fine one day, then turned to swiss cheese overnight. It’s never fun to discover that while you were sleeping, these slimy pests were busy destroying your favorite plants!
Controlling garden pests can be difficult. While it is possible to get rid of slugs, you’ll need to be diligent, and find the methods that work the best for you.
Once you figure out how to control slugs, and you stick with it, your problem will eventually go away.
Here’s what you’ll find in this guide for how to get rid of slugs organically…
- What Is A Slug?
- What Do They Look Like?
- Slug Life Cycle
- Where Do They Come From?
- What Do They Eat?
- Damage To Plants
- How To Get Rid Of Them Naturally
- Natural Control Methods
- How To Prevent Slugs
- FAQs
What Is A Slug?
Slugs are destructive pests that thrive in damp, shady areas of the yard. They hide during the day and come out at night to feed on many different types of plants.
They leave a slime trail wherever they go. So, you may notice shiny lines on your plants or on the ground early in the morning. Those are called slug trails, and are a sure sign that slugs are present.
What Do Slugs Look Like?
Slugs are slimy, soft bodied, ugly looking things. They actually look a lot like snails without the shell on their backs.
They can be brown, black or gray in color, and different sizes depending on the species. The slugs in my garden are usually about 1″ long, but some types can get much larger than that.
Slime is their defense mechanism. So if you’re unsure that you have slugs, the best way to tell is by touching them (but be warned that it’s gross!). They will slime you if you touch them, which will give you a positive ID.
A slug in my garden
Slugs Life Cycle
Slugs overwinter as adults or eggs, and they hibernate in the soil, under plant debris or in mulch. When the conditions are just right in the spring, adults will emerge to start feeding and mating, and the dormant eggs will begin to hatch.
Though most types of slugs are hermaphroditic (i.e.: they have both female and male reproductive organs), they still need a mate in order to reproduce. But this also means that every single slug is capable of laying eggs. Yikes!
Adult slugs lay their eggs in moist areas, like in under rocks, in compost, mulch, or the soil. In ideal conditions, slug eggs take about 2 weeks to hatch. Otherwise, they will sit in dormancy until the conditions are favorable for them to hatch.
It can take several months for baby slugs to go through their juvenile stage before becoming mature adults. But they can feed on plants at any time during these three phases of their life cycle. Adults can lay eggs throughout the growing season, so multiple generations overlap.
Slugs will rest during hot and dry periods, and will stop feeding and mating until it becomes cool and damp again. But in favorable conditions, their population can explode very quickly.
Where Do Slugs Come From?
Slugs are sneaky little devils. They are nocturnal, and hide in dark areas, like under leaf debris, plants or mulch during the day. That’s why it can be difficult to get rid of slugs.
They’re excellent hiders, and it’s uncommon to see them out, or even find them during the day. Once the sun goes down, they come out in full force and begin feeding on everything in site.
Many people are confused when they see plant damage that seems to have appeared overnight. Often times, they blame other insects that they see, not realizing slugs are the culprit.
Two slugs mating in the garden
What Do Slugs Eat?
You may notice that slugs prefer certain plants in your yard. This is partly because of their location, slugs thrive in shady, damp areas of the garden.
Slugs will eat pretty much anything, but they like certain types of plants better than others. Some of their favorites in my gardens are hostas, beans, squash, cabbage, lettuce, tomatoes, and seedlings.
What Does Slug Damage Look Like?
Slug damage to plants looks like irregular shaped holes, or ragged edges on the leaves. At their worst, slugs can devour mature plants all the way down to nubs.
They can also eat fruits and vegetables that are still on the plants. That damage looks like perfectly rounded holes, almost like someone used a mini-melon baller on them.
As for small plants and seedlings… well, those can be eaten down to just a stem, or disappear completely overnight. Grr!
Slug damage on leaves of my hostas
How To Get Rid Of Slugs In The Garden Naturally
Now that you know all about slugs and where they come from, you can focus your pest control efforts to eliminate them from your garden.
Luckily, you don’t need to resort to using toxic chemical pesticides (and you shouldn’t!). There are tons of safe slug control methods that you can use to rid your garden of these slimy, plant eating pests.
Natural Slug Control Methods
Below I will give you several options for controlling slugs. If you’re persistent with your fight, you can successfully get rid of slugs in your garden!
But keep in mind that it will take more than one treatment. Plus, you may need to combine several of these methods to find the perfect solution. Here are some natural and organic options for how to control slugs in the garden…
Related Post: Natural Garden Pest Control Remedies And Recipes
Hand Pick The Slugs From Your Garden
I like to call this method “slug hunting”. Hand picking slugs is easy and satisfying, as long as you get the timing right. Oh, and be sure to wear disposable gloves so your hands don’t get all slimy (slug slime is really hard to wash off!).
To go slug hunting, grab your flashlight and head out to the garden after the sun goes down. It might take some time to find the slugs. But their slime trails will shine in the light. So follow the slime, and you’re sure to find slugs.
They’re slow moving, and will curl up when you touch them, so they’re easy to grab. To kill slugs, simply drop them into a bucket of soapy water. You could just squish them instead, but I get too grossed out doing that!
I leave them in the bucket over night, then dump the contents into the compost bin in the morning – dead slugs and all. If you don’t have a compost bin, you can dispose of dead slugs in the weeds somewhere, or just toss them into the trash.
Slug curled up on vegetable plant
Make A Beer Trap For Slugs
You may have heard that slugs love beer. It’s true, they can’t resist it! Why do slugs like beer? They’re attracted to the yeast. Here’s how to make a slug beer trap…
Simply sink a disposable shallow container (or use a slug trap) into the ground so the rim is at soil level, then fill it with fresh beer right before sunset. The slugs will fall into the beer and drown.
To empty the trap, you can simply dump the contents into the compost bin – beer and all. Or just throw the whole trap into the trash if it’s made of a disposable material.
I’ve found that the best beer for slug traps is the cheap stuff, lucky for us! But, unfortunately they like fresh beer. So for the best results, you should empty the traps and fill them with fresh beer daily. It can get a bit spendy.
DIY slug beer trap
Make Your Own Slug Trap (Without Using Beer)
As I’ve mentioned several times before, slugs like damp, dark spots. So you can create DIY slug traps by making ideal hiding spots for them, and then hand pick them in the morning. Here are a few ideas for how to make a slug trap…
- Lay some wet cardboard or wood in an area that has slug problems. Then in the morning you can lift it up to find them hiding underneath.
- Get some large rocks or bricks, and place them under susceptible plants. The slugs will hide under the damp rocks. Flip the rocks over in the morning to find the hiding slugs.
- They love old or rotting fruits and veggies. So use some as bait for catching slugs, and place it under a tent made out of cardboard or other material. You’ll likely find some feeding on your slug trap bait in the morning.
Use Diatomaceous Earth For Garden Slugs
Sprinkle diatomaceous earth (DE) around the base of the plants that slugs love the best. It will cut up their soft bodies when they slink across it, killing them.
The downfall of using diatomaceous earth for slug control is that you must reapply after it rains. It’s also not the best way to get rid of slugs, since DE can kill other bugs that walk across it too.
Try Putting Salt On A Slug
Table salt may work to kill slugs by dehydrating them, and drying out their bodies. Simply sprinkle it directly on the slugs.
However, be very, very careful using salt in your garden. Too much salt can be harmful to your plants, or ruin the soil so you won’t be able to grow anything. Use this method sparingly.
Garden slug feeding on a tomato
Create A Copper Slug Barrier
Copper shocks slugs when they touch it, which deters them from crossing it. So you can create a barrier around your plants, pots, or raised beds to keep slugs out.
In order to protect plants from slugs, the copper needs to be thick enough so that they can’t reach over it (old pennies are too small). You can buy copper mesh that’s specifically made for this purpose, or use copper slug repellent tape.
Try Coffee Grounds For Slug Control
Do coffee grounds deter slugs? I can’t speak from experience here, because I’ve never tried this myself. But some people swear that sprinkling coffee grounds around their plants works to repel slugs.
Caffeine is said to be toxic to slugs, so that’s why they will avoid coffee grounds. So, if coffee grounds are readily available to you, try creating a barrier around your plants to see if it works to keep slugs away.
Choose Slug Resistant Plants
Though it can seem like slugs will eat anything and everything, there are actually many types of plants they don’t like. Some may even be considered slug repellent plants.
They don’t like smelly plants, so they usually avoid most types of herbs, and vegetables like garlic and onions. Many gardeners use these as companion plants that keep slugs away.
I’ve also noticed that they don’t bother a few other plants in my garden. Begonias, ferns, hydrangea, nasturtium, lantana, astilbe, phlox, and clematis, to name a few.
Apply Organic Slug Pellets
There are many different types of slug granules or pellets on the market these days. They can be very effective to get rid of slugs, but be careful because some types contain chemicals that are be toxic to pets and people!
So be sure to always use non-toxic slug pellets (Sluggo and Garden Safe are two great brands). They contain natural ingredients that are poisonous to slugs, but safe for us and the environment.
Natural slug pellets work by attracting the slugs. They’ll eat the pellets, and then die a little while later. Simply sprinkle them over the soil around affected plants.
Sprinkling organic slug pellets around my hostas
How To Prevent Slugs In Your Garden
Once you figure out the methods that work the best to get rid of slugs in your garden, you’ll want to keep them from coming back. Here are a few quick slug prevention tips…
- Clearing your garden of dead plant materials and debris in the fall can help to prevent slugs from overwintering there.
- If you have a compost bin, be sure to turn it often to prevent slugs from feeding, hiding, and mating in there.
- Try using a natural slug repellent made from wool. Slugs don’t like the feeling of it, so it will keep slugs off plants.
- Slugs prefer areas covered with heavy mulches. So try using a lightweight mulch in the slug-infested areas of your garden instead.
- Tilling or turning the soil in the fall will help to expose or kill slugs and their eggs.
Slugs eating green bean leaves
FAQs About Controlling Slugs
In this section, I’ll answer some of the most frequently asked questions about getting rid of slugs. If you still have a question after reading through this article, and these FAQs, then ask in the comments below. I’ll get it answered ASAP.
What attracts slugs to my garden?
Like I’ve mentioned a few times above, slugs thrive in cool, damp, shady spots. So they will be attracted to your garden if the conditions are ideal, and there’s food for them.
What eats slugs?
Lucky for us, slugs have lots of natural predators (and that’s why it’s super important to use organic slug control methods!).
Some of the most ferocious slug eaters are frogs, toads, birds, chickens, snakes, turtles, ground beetles, and firefly larvae.
Does neem oil work on slugs?
Yes, I use neem oil for slugs in early spring only in order to protect my at-risk seedlings so they won’t get destroyed before they can grow.
However, neem oil is not the best solution for getting rid of slugs. Even though it’s a naturally occurring pesticide, it still kills lots of different types of bugs. So it’s best to use it sparingly in the garden.
When do slugs come out?
Slugs usually come out at night after sunset. However, sometimes they will come out during the day in heavily shady areas.
Does cornmeal kill slugs?
That’s debatable. I’ve heard people rave about how using cornmeal worked to get rid of slugs naturally. I tried it, and it’s true that slugs really do love eating cornmeal.
But, I didn’t see any reduction in the amount of slugs after a few days, and I felt like I was just feeding the slugs. So I gave up on that method.
Do slugs drown in water?
Yes. Slugs can’t swim, and will drown in water or a beer trap. I don’t know how long that takes for them to drown in water though, so I always put liquid soap into the water to speed things up.
Getting rid of slugs may feel like an impossible task, but it is doable. It might take some trial and error to find the best slug control products or methods that work for you. But your persistence will pay off, and your slug problem will eventually go away!
Recommended Garden Slug Control Products
More Garden Pest Control Articles
- How To Control Flea Beetles In The Organic Garden
- How To Get Rid Of Cabbage Worms Organically
- How To Get Rid Of Iris Borers Naturally
- How To Get Rid Of Squash Vine Borers Organically
- How To Get Rid Of Squash Bugs Naturally
Share your tips or methods for getting rid of slugs in the comments below.
Deb says
My mother was an avid organic gardener. When she had a problem with slugs, she would place one or more shallow tinfoil pie plates where the slugs congregated in the garden and fill them halfway with beer. In the morning, the pie plates would be full of dead slugs.
Amy Andrychowicz says
Yes, slugs love beer! I’ve had great success with this method too.
M ludke says
I have used coffee grounds, diatematious earth, egg shells as well as getting out there and spraying any slugs I find with a mix of ammonia and have not seen a reduction in slugs… I’m ready to dig all my perennials up , and wondering if there is any thing I could treat the soil with to kill whatever larvae is left in the fall?, and how deep do the critters nest?
Amy Andrychowicz says
Ugh, sorry to hear that your battle with slugs has not been working. 🙁 That’s super frustrating. I have found great success using the Sluggo product that I mentioned in the article, and then spraying beneficial nematodes at least once a year for longer term control.
James says
You don’t mention using beneficial nematodes as a method of controlling slugs! I have used a product called NemaSlug, and this is a natural product which is dispersed in water and sprinkled on the ground. It contains millions of live nematodes which attack the slug larvae underground, so you don’t even need to worry about getting rid of the dead slugs. What’s more, while attaching slugs, the nematodes multiply, and you get a fresh army of them seeking out new slug larvae! It works for me, and I hardly ever see any slugs now in my garden!
Amy Andrychowicz says
Great to hear that nematodes have worked to help you control slugs in your garden! Thanks for sharing your experience and product recommendation. That is very helpful.
James says
I’m not sure if they’re available in the States though?
Amy Andrychowicz says
I don’t know if we have the specific brand, but we can buy beneficial nematodes here under several other brand names. 🙂
Chip says
Amy, thanks for the post and for the comment replies. We recently purchased a home and I immediately started planting a small garden. I was shocked to see how quickly my young pepper plants and basil were being devoured. Basil specifically surprised me as I didn’t think pests were attracted. At the advice of my local nursery, I’ve spread Sluggo.
Have you experienced slugs chomping on herbs, specifically basil? Thanks!
Amy Andrychowicz says
Oh bummer, sorry to hear that the slugs decimated your plants. That’s a huge bummer! I have not had issues with them eating my herbs, but it doesn’t surprise me that they ate your basil. This time of year, food is scarce, so they can’t be as picky as they are once everything else starts to grow. Hope the Sluggo helps, it has worked well in my garden.
Capt. Brigg Franklin says
I grind up egg shells in a small coffee grinder used for only that purpose. Don’t use the same grinder for your coffee, as the ground up shells are also bad for you if swallowed. Then sprinkle the ground up shells on the ground around your plants. The ground shells will cut the slugs and either kill them or prevent them from crossing the barrier. The egg shells can also add calcium for plants like tomatoes that require it for proper fruit set.
Amy Andrychowicz says
Awesome, thanks for sharing your favorite slug control method. It’s great to hear that the crushed eggshells work for you!
Ash says
I sprinkle mealie meal or cornmeal as it is called in some countries. Slugs eat it and then die off. I have much less in my garden at the moment. But my garden is huge and I have to do the whole place. So far I have only been sprinkling the cornmeal in some of the beds. But I do see less slugs and less damage, so its working. I also collect and dry all my eggshells in the sun before crushing and use that around plants. The kids love to do the crushing part, I place all the shells in a plastic bag and they stomp on it to crush.
Amy Andrychowicz says
Good to hear that the cornmeal slug control method has worked in your garden. I tried using cornmeal in my garden last summer, and the slugs sure do love it. I could see them devouring it when I went out to check the garden at night. Though, I’m not sure it helped. I just felt like I was feeding the slugs, LOL! To be fair, I did only try it twice, so probably not long enough to make a huge difference.
Ruth Anne says
I have flagstone all around the area that is filled with hostas. I discovered that slugs love to hide under the stones, so it was a simple job to flip the stones one at a time and kill the slugs underneath. I have been doing this for the past 2 summers – it’s amazing how effective this has been.
Amy Andrychowicz says
Oh, good to know that the stones in your garden made natural slug traps! That’s wonderful, and a great slug control tip.
Sugar says
When I lived up in the cities, the slugs destroyed my hosta's! They ate them right down to the center vein. I experimented with several treatments, but the diatomaceous earth worked best for me.
Amy Andrychowicz says
Wonderful, so glad to hear the diatomaceous earth worked for slug control. Thanks for sharing your experience.
Mia says
If you have a sandbox, you can sneak a couple of cups of sand to sprinkle around the base of the plant to help deter slugs. But don't let your kids see you sneaking sand out of their box. They might get mad. Ahem, not that I would know from personal experience or anything. Ahem.
Amy Andrychowicz says
LOL! Thanks for the tip about using sand around the base of plants to deter slugs! Does this method work for you?