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How to Get Rid of Slaters on Irish Moss Plant

Updated: July 10, 2023

Introduction

Irish moss, also known as Sagina subulata, is a popular ground cover plant with delicate, moss-like leaves that create a lush green carpet. It is commonly used in rock gardens, between pavers, and as edging along pathways due to its low-growing and spreading nature. However, one common problem that gardeners face when growing Irish moss is the presence of slaters or woodlice. These small crustaceans can damage the plant by feeding on its leaves and roots. In this article, we will explore effective methods to get rid of slaters and protect your Irish moss plant.

Identifying Slaters

Before diving into the methods of eliminating slaters, it is essential to identify them correctly. Slaters are commonly mistaken for insects, but they are actually land-dwelling crustaceans related to lobsters and crabs. They have a segmented body with rigid plates and seven pairs of legs. Slaters are typically gray or brown in color and measure around 1 cm in length.

Understanding Slaters’ Behavior

Slaters thrive in damp and dark environments, making them particularly attracted to Irish moss plants that provide moisture and shade. They are nocturnal creatures and are most active during the night. Slaters feed on decaying organic matter, but they can also damage living plants by nibbling on leaves and roots.

Natural Methods to Control Slaters

If you prefer using natural methods to control slaters on your Irish moss plant, here are some effective strategies:

  1. Improve Drainage: Slaters are attracted to damp environments, so improving the drainage around your Irish moss plant can discourage their presence. Ensure that the soil is well-drained by adding organic matter such as compost or peat moss.

  2. Reduce Moisture: Since slaters thrive in moist conditions, reducing the moisture levels around your Irish moss plant can deter them. Avoid overwatering and try to water the plant early in the day, allowing the soil to dry out before nightfall.

  3. Remove Debris: Slaters are attracted to decaying organic matter, so regularly remove fallen leaves, dead plants, and other debris from the vicinity of your Irish moss plant. This will reduce their food source and make the area less appealing for them.

  4. Provide Natural Predators: Introducing natural predators of slaters can help control their population. Ground beetles, spiders, centipedes, and certain species of birds feed on slaters and can be encouraged in your garden by providing suitable habitats such as rocks or logs.

Organic Pest Control Methods

If natural methods do not provide sufficient control over slaters, you may consider using organic pest control methods as a next step:

  1. Beer Traps: Slaters are attracted to the scent of beer and can be lured into traps. Bury a small container in the ground near your Irish moss plant and fill it with beer. The slaters will be attracted to the beer and drown in the trap.

  2. Diatomaceous Earth: Diatomaceous earth is a natural powder made from fossilized algae. It is harmless to humans and pets but can be effective against slaters. Sprinkle diatomaceous earth around your Irish moss plant, focusing on areas where slaters are most active. The powder will dehydrate and kill the slaters upon contact.

  3. Iron Phosphate-Based Baits: Iron phosphate-based baits are another organic option for controlling slaters. These baits are available in pellet form and can be scattered around your Irish moss plant. Slaters will consume the bait, which will eventually lead to their death.

Chemical Control Methods

If all else fails, you may resort to chemical control methods for severe infestations. However, it is important to exercise caution and follow the instructions provided by the manufacturer. Chemical control methods should always be used as a last resort and sparingly to minimize potential harm to the environment.

Conclusion

Slaters can be a nuisance when they infest your Irish moss plant, but with the right strategies, you can effectively eliminate them and protect your plant’s health. Start with natural methods such as improving drainage, reducing moisture levels, and removing debris. If these methods are not sufficient, consider organic pest control options like beer traps, diatomaceous earth, or iron phosphate-based baits. Only as a last resort should you turn to chemical control methods. By taking proactive measures and being consistent in your approach, you can enjoy a thriving Irish moss plant without the presence of slaters.