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How to Get Rid of Slugs on Thuja Plant

Updated: July 1, 2023

Slugs can be a common nuisance for gardeners, especially when it comes to delicate plants like the Thuja. These slimy pests can quickly devour your Thuja plant’s leaves, leaving behind a trail of destruction. However, there are several effective methods you can employ to get rid of slugs and protect your Thuja plant. In this article, we will discuss the various techniques and remedies that can help you keep your Thuja plant slug-free.

Understanding Slugs and their Behavior

Before delving into the methods of getting rid of slugs, it is essential to understand their behavior. Slugs are soft-bodied, shell-less creatures that thrive in moist environments. They are most active during the night and prefer cool and shady areas. Slugs feed on a wide range of plants, including Thuja.

1. Handpicking

One of the simplest and most effective methods to control slugs is by handpicking them. This method is particularly useful if you have a small garden or a few affected Thuja plants. To handpick slugs, inspect your plants during the early morning or late evening when they are most active. Wear gloves and remove slugs from the plant manually by picking them up and placing them in a container filled with soapy water. This method may require regular monitoring but can significantly reduce the slug population in your garden.

2. Create Slug Barriers

Creating physical barriers around your Thuja plant can help prevent slugs from reaching them. There are several options for creating slug barriers:

a) Copper Tape

Slugs dislike coming into contact with copper. Applying copper tape around the base of your Thuja plant or creating a ring around it can deter slugs from climbing up and reaching the foliage. Ensure that the copper tape is at least 4 inches wide and forms an unbroken ring.

b) Eggshells

Crushed eggshells can act as a natural deterrent for slugs. Scatter crushed eggshells around the base of your Thuja plant to create a barrier. The sharp edges of the eggshells deter slugs from crossing over.

c) Diatomaceous Earth

Diatomaceous earth is a fine powder made from fossilized remains of aquatic organisms. It contains sharp microscopic edges that can pierce the soft bodies of slugs, causing dehydration and death. Sprinkle diatomaceous earth around the base of your Thuja plant, creating a protective barrier.

3. Beer Traps

Beer traps are an effective and popular method for controlling slugs. Slugs are attracted to the smell of beer and will crawl into containers filled with beer, eventually drowning. To create a beer trap, bury a shallow container, such as a yogurt cup, in the ground near your Thuja plant. Fill the container with beer, leaving the rim at ground level. Check the traps daily and dispose of drowned slugs.

4. Natural Predators

Introducing natural predators into your garden can help control slug populations. Some common natural predators of slugs include ducks, chickens, hedgehogs, and frogs. Consider creating a welcoming environment for these beneficial creatures by providing suitable habitats and food sources.

5. Organic Slug Control Products

If you prefer using organic methods to control slugs, there are several commercial products available that are safe for plants and the environment. Look for slug control products containing ingredients like iron phosphate or nematodes, which specifically target slugs but are harmless to humans and pets. Follow the instructions on the product packaging for effective use.

6. Garden Maintenance

Maintaining your garden properly can help reduce slug populations in the long run. Here are some tips:

  • Remove any debris or plant material that can provide hiding places for slugs.
  • Keep your garden free from excessive moisture by avoiding overwatering.
  • Regularly weed your garden to eliminate slug hiding spots.
  • Avoid using mulch that retains moisture, as it provides a favorable environment for slugs.

Conclusion

Dealing with slugs can be frustrating, especially when it comes to protecting delicate plants like the Thuja. However, by employing these effective methods, you can keep your Thuja plant safe from slug infestations. Remember to regularly monitor your garden and take action promptly if you spot any signs of slug damage. With a little patience and persistence, you can successfully rid your Thuja plant of slugs and ensure its healthy growth.