How do I get rid of slugs in my greenhouse??

How to Get Rid of Slugs in Your Winter Gardenz Greenhouse

Slugs may be small, but they can wreak havoc on your greenhouse crops—especially in New Zealand’s damp, temperate climate. These nocturnal pests feed on tomato plants, kale, jackfruit, and more, often leaving growers puzzled by disappearing seedlings and chewed leaves. Slugs hide in organic matter during the day and emerge at night to feast on stems, shoots, and fruit.

Left: Slugs on kale | Right: Slugs in a beer trap

Top Slug Control Methods for NZ Greenhouse Growers

• Nighttime Patrol: Grab a headlamp and pick slugs off manually after dark. They’re easy to spot and remove by hand.
• Beer Traps: Fill shallow dishes with beer and sink them slightly into the soil. Slugs are drawn to the yeast and will drown themselves. Any beer works—craft IPA or budget lager.
• Coffee Grounds: Sprinkle used coffee grounds around plant bases in a 10cm ring. Slugs dislike the texture and acidity. Keep the layer thin and avoid direct contact with stems.

These natural methods are safe, effective, and greenhouse-friendly. With a little effort, you can protect your crops and keep your Winter Gardenz greenhouse slug-free.

How to Get Rid of Slugs in Your Winter Gardenz Greenhouse (AU Edition)

Australian growers know that slugs can be a persistent nuisance—especially in humid regions or after heavy rain. These slimy pests hide in mulch and organic debris, emerging at night to chew through seedlings, leafy greens, and fruiting plants. If your greenhouse crops are mysteriously vanishing, slugs may be the culprit.

Left: Slugs on kale | Right: Slugs in a beer trap

Effective Slug Control for Aussie Greenhouses

• Manual Removal: Use a torch and pick slugs off by hand after sunset. It’s low-tech but effective.
• Beer Baiting: Place jar lids or shallow dishes filled with beer among your plants. Slugs are attracted to the yeast and will drown. Bury the dish slightly for easier access.
• Coffee Grounds Barrier: Create a 10cm-wide ring of used coffee grounds around each plant. Slugs dislike the acidity and texture. Avoid piling too much, as excess acidity can harm your soil.

With these simple techniques, you can keep your greenhouse thriving and your produce slug-free. Winter Gardenz greenhouses offer the perfect environment for year-round growing—just add a few slug deterrents and you’re good to go.