How to Stop Slugs from Chewing Holes in Hosta Leaves

2016-02-23
How to Stop Slugs from Chewing Holes in Hosta Leaves

If you've lately been lamenting, "What's eating my hostas?" on repeat, the answer is probably slugs. These gooey guys like to munch on the leaves of hosta—those reliable garden workhorses that come back year after year and adorn your yard with all sorts of textures and shades of green. If you're counting on the lush foliage to fill out your shady spaces, don't despair: There are several ways you can stop slugs in their slimy tracks and keep them away from your hostas all summer long.

Garden Pests That Eat Hostas

Before you declare war on slugs, confirm they're the ones making holes in your hosta leaves. Besides hail, cutworms could also be the culprits; their signature is chewing the soft parts of the leaves and avoiding the veins. Slugs will munch anywhere on the leaves, right through the veins. Deer and rabbits will eat hostas, too, but they don't leave holes behind. Instead, you'll likely see bare stems with maybe a ragged piece of leaf left behind.

How to Get Rid of Slugs

Make Them Uncomfortable

Slugs prefer damp places where they can slide around easily. Rake away any dead leaves near your hostas and add some rough mulch, like bark, around your plants. You can also sprinkle diatomaceous earth ($17, The Home Depot) around your hostas. Slugs don't like the sensation of the tiny, sharp crystals in this nontoxic powder. Ground-up eggshells can have the same effect. If you only have a small area to protect, try circling it with copper tape at ground level. The slime on the slug's foot chemically reacts with copper, giving the pest an electrical shock.

Follow Their Tracks

If you aren't too squeamish, hunt for slugs at night when they are most active. The beam of a flashlight will glint off their slimy trails, which you can follow to find the slugs making the tracks. Once you've located them, drown them in a container of soapy water or feed them to backyard chickens if you have them (chickens love slugs).

Create a Slug Hotel

Try this homemade remedy to protect hosta plants from bugs: Leave out a smooth piece of cardboard or a small wooden board on the ground in a damp, shady spot. Give the slugs a day or two to check in before turning over the cardboard or board and evicting your unwelcome guests.

Poison Slugs with Iron Oxide

Finally, there's the poison route. Make sure you don't use anything that might also harm birds, pets, and children—iron oxide, for example, is toxic only to slugs and snails. Scatter a slug bait with iron oxide, like Sluggo ($9, The Home Depot), around each hosta. Check back every two weeks or after big rains, and replace the bait if it's gone.

It may take several of these tactics to stop slugs from chewing holes in hosta leaves. You'll know your efforts are working when you start seeing new, undamaged leaves growing in, replacing the ones the slugs have been snacking on.

Related Article

How to Propagate Orchids Successfully, Depending on Type

How to Propagate Orchids Successfully, Depending on Type

Learn the best techniques for propagating orchids that are monopodial or sympodial. Get essential tips and expert advice to propagate orchids by keiki or division.
How to Grow and Care for Nerve Plant

How to Grow and Care for Nerve Plant

Want to grow a nerve plant? Learn how to care for these tropical houseplants, where to grow them in your home, common pests, and different types to choose from.
How to Grow and Care for Living Stones

How to Grow and Care for Living Stones

Find out how to grow living stones, unique miniature succulents that look like pebbles. This guide covers how to care for living stone plants, including watering them just right to keep them thriving.
8 Begonia Houseplant Care Tips to Keep Your Plants Thriving

8 Begonia Houseplant Care Tips to Keep Your Plants Thriving

Find out how to care for begonia houseplants with these tips on the best types to grow, lighting, watering, fertilizer, and more.
11 Bathroom Plants That Thrive in Humidity

11 Bathroom Plants That Thrive in Humidity

Add some life to your home with these 11 high humidity bathroom plants. Dim lighting and a moist environment are exactly what they need to flourish.
How to Stop Woodpeckers from Pecking Your House

How to Stop Woodpeckers from Pecking Your House

Are woodpeckers pecking your siding? Learn why they’re making a racket and more importantly, how to get them to stop.
Discover Your Garden Personality to Create Your Perfect Outdoor Space

Discover Your Garden Personality to Create Your Perfect Outdoor Space

Garden designer Ryan McEnaney shares his insights and tips on finding your outside style based on your garden personality.
Grow Perfect Tomatoes with This PVC Trellis

Grow Perfect Tomatoes with This PVC Trellis

Protect your homegrown produce and learn how to make an arbor made with PVC pipes. This easy project is much less expensive than store-bought options!
13 Colorful Nectar Plants for Pollinators

13 Colorful Nectar Plants for Pollinators

Create a gorgeous, pollinator-friendly garden by including these nectar-rich plants.
How to Make a Tomato Cage Plant Stand

How to Make a Tomato Cage Plant Stand

Repurpose a tomato cage to create a tall plant stand perfect for a front stoop container garden. Add rustic flair with rope-wrapped rows.
How to Plant and Grow Skeleton Flower

How to Plant and Grow Skeleton Flower

Skeleton flower is a unique and rare plant with petals that look clear when wet. This guide explains how to grow these unique and rare flowers, which do best in dappled light and consistently moist soil.
How to Plant and Grow Ranunculus

How to Plant and Grow Ranunculus

Ranunculus are favorite flowers for weddings, arrangements, and gardens. Here's how to plant and grow ranunculus.
How to Grow Roses from Cuttings of Your Favorite Varieties in 10 Simple Steps

How to Grow Roses from Cuttings of Your Favorite Varieties in 10 Simple Steps

In only a few simple steps, you can learn how to grow roses from cuttings to make your garden extra gorgeous.
How to Propagate Clematis from Cuttings and Layering

How to Propagate Clematis from Cuttings and Layering

Learn how to propagate clematis successfully with this step-by-step guide on two different techniques.
Dress Up Your Home with This Foolproof Foundation Garden Plan

Dress Up Your Home with This Foolproof Foundation Garden Plan

Create a welcoming look for your home with this easy-care combination of foundation plantings that will look great around the foundation of your home.
When and How to Harvest Spinach at Its Peak

When and How to Harvest Spinach at Its Peak

Learn how to harvest spinach microgreens, baby leaves, and mature greens with these simple tips.
The Plant Food That Saved My Roses Is Almost  at My Local Flower Shop, but It’s  at Amazon Right Now

The Plant Food That Saved My Roses Is Almost at My Local Flower Shop, but It’s at Amazon Right Now

One writer’s Knock Out roses were looking worse for wear, and now, thanks to an Instagram recommendation for a Amazon product, these blooms are thriving. Shop the Osmocote Smart-Release Plant Food on sale for 25 percent off.
How to Use Fertilizer for Plants According to Experts

How to Use Fertilizer for Plants According to Experts

Get expert tips on fertilizing plants, including the best formulation for both houseplants and garden plants, as well as how frequently you should feed them.
30 Facts About Plants You Didn't Know Until Now

30 Facts About Plants You Didn't Know Until Now

Did you know you can cut onions without crying? Here are some fun and interesting facts about plants.
Ladybug vs. Asian Lady Beetle: How to Tell the Good Bug from the Bad Bug

Ladybug vs. Asian Lady Beetle: How to Tell the Good Bug from the Bad Bug

A ladybug and an Asian lady beetle look similar, but one type helps control unwanted insects in the garden while the other is a pest itself. Here's how to tell these similar-looking bugs apart.