Slugs can cause gardeners to lose control

Slugs can eat 30 to 40 times their weight every day. 

You’d think that riding your bike across the country would be a trip riddled with trials, tribulations and fears. For example: running out of water, fierce headwinds, hail, diarrhea, voracious dogs, getting run over by a truck ...

Fears reside in our minds, as real as we make them. Fears can be hard to shake, especially when we’re traveling alone.

So when former Kodiak resident Ken Renke rode his bike from Florida to Port Townsend, Washington, this spring, he experienced his biggest fear at the end of his 3,700-mile trek. He’d reached the Snoqualmie Pass summit, an elevation of 3,100 feet.

Now, Snoqualmie Pass carries the Interstate 90 (I-90) freeway through Washington’s Cascade Range. It’s famous for inclement weather and hazardous road conditions any time of year ...

“Weather was horrible. It was 40 degrees and raining hard,” Ken told me last week over coffee at our house. “I was riding down from the summit, brakes on. Crazy traffic, like a truck race track.

“Then this thought popped into my head: What if I hit one of those giant banana slugs? I panicked because I’d probably lose control!”

Ken made it down the pass alright and rolled into Port Townsend on a sunny afternoon a couple days later. After a short visit with friends, he flew to Alaska ...

While Ken didn’t hit a slug and lose control, slugs have been know to cause gardeners to lose control.

Like aphids, slugs don’t appear out of nowhere. And most slugs are imported, hitching rides inside potting soil and containerized plants.

There are a few things you need to know about slugs: First, slugs are pigs and have gross table manners. They can eat 30 to 40 times their weight every day. and they chew with a rasping mouthpiece, sawing away on plants and leaving ragged edges and holes.

That said, slugs and other garden pests are a sign that something is not quite right: Plants are too crowded, the soil doesn’t drain very well, dead leaves are rotting under the broccoli plants and so on.

The point is, if plants are stressed or the garden is out of balance, then you might have a pest problem.

Got slugs? Take a deep breath and consider your tolerance level. For example, if you find a few slug holes in a cabbage leaf, is that still acceptable, where a swarm of aphids on your rose buds is not?


How to deal with slugs

The past few winters have been fairly gentle on these gastropods, allowing them to breed to their hearts’ content. (Actually slugs have muscles which move around the liquid inside them, which I suppose you could call that a heart). But they don’t have hearts that beat in the same way as humans do).

Slugs do not have brains, either. Instead, a slug’s nerve cells are concentrated in tight knots called ganglia. And they have an acute sense of smell.

Begin by going on a slug egg hunt. You can find slug eggs almost any time of the year — anywhere there’s shelter from direct sunlight. In late summer, after reaching the age of three months, slugs begin laying hundreds of clear to whitish BB-sized eggs in the soil and under garden debris. They over-winter this way, and the milder the winter, the more eggs survive.

Don’t remove all wilted and dead leaves from the ground. Slugs will only find more, perfectly good things to eat. Leave a few wilted broccoli or lettuce leaves bait. Boards and rotting logs are also potential nurseries for slug eggs.


This Bud’s for you

Along with commercial baits such as Sluggo, beer also does the trick. Yes, slugs love beer, and the cheaper the better. And because they’re under the legal age limit, you have to bring the beer to them! Sink a cottage cheese or yogurt container into the soil so that a slight lip sticks up. Fill with beer.

Don’t be surprised if the container is full of slugs by morning. Lured by the sweet, yeasty smell of brew, slugs are anesthetized by the alcohol, fall in the swimming pool and drown.

You can also make a slug trap out of hollowed-out melon halves turned upside down on the soil.

To make a beer substitute: add 1/2 teaspoon baking yeast and a tablespoon of sugar to 4 cups water. Check the traps and replace the liquid often. Even slugs have standards.


Hand picking, really?

Slug patrol means hand-picking. No getting around it, this is the most effective way to reduce the breeding population. Early morning and in the cool of the evening are the best times for picking — or any time during a rainy, drizzly day. 

Employ tongs, scissors, gloves or chopsticks. I prefer bamboo chopsticks because the rough texture of the bamboo has better gripping qualities. Teaspoons and trowels also do the job, but they need to be rinsed off, say, after 50 or so slugs.

As I write this, Ken is visiting a friend on the west side of the island. She has a huge garden. Hopefully, he’s picking red salmon, not slugs.


Marion’s Garden Calendar:

Most people have their gardens in, so now is a good time to clean up a bit. Start by weed-whacking along fences, posts and around mailboxes. 

Clean and put away tools you are not using. Clean out flats and plastic pots. Store them away.

Train pea vines, de-bud wilted flowers, tap tomatoes daily, thin carrots, please.

Finally, a good clean-up includes a good mow. Anchorage garden writer Jeff Lowenfels suggests we get creative with our mowing. This goes for the City of Kodiak’s Parks and Recreation staff. Hey, you might as well have a little fun.

“Lay out a nice pattern, say circles, diagonals, triangles or anything other pattern than the traditional cross cut,” he says.

“Lawn art is free and it makes mowing the lawn a whole lot more enjoyable. Trust me. Just try it. You won’t go back to your old, boring ways.”


Got a gardening question? Join the Kodiak Garden Club or the Kodiak Growers Facebook group. Got a gardening question? Send it to: or visit my blog at:

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