Updated: July 25, 2023

Introduction

Slaters, also known as woodlice or pill bugs, can be a common and frustrating pest for raspberry plant growers. These small, crustacean-like insects feed on decaying organic matter and can cause damage to the roots and fruits of raspberry plants. If left uncontrolled, slaters can multiply rapidly and become a serious threat to the health of your raspberry plants. In this article, we will explore some effective methods to get rid of slaters and protect your raspberry plants.

Identifying Slaters

Before we dive into the methods of eliminating slaters, it is important to correctly identify them. Slaters are small, gray or brownish-gray insects that have a segmented body with several pairs of legs. They measure around 1 cm in length and have a hard exoskeleton. When threatened, slaters will roll up into a tight ball, which is why they are often referred to as pill bugs or woodlice.

Prevention is Key

As with any pest problem, prevention is always better than cure. By implementing some preventive measures, you can reduce the risk of slater infestation on your raspberry plants. Here are a few tips:

  1. Maintain good garden hygiene: Slaters thrive in damp and decaying organic matter. Clear away any fallen leaves, mulch, or other debris from around your raspberry plants regularly. This will remove their preferred hiding spots and food sources.

  2. Improve drainage: Slaters prefer moist environments. Ensure that your raspberry plants are not sitting in waterlogged soil by improving drainage around them. Avoid overwatering and consider using raised beds if your soil tends to retain moisture.

  3. Create physical barriers: Place a layer of gravel or crushed eggshells around the base of your raspberry plants. Slaters find it difficult to crawl over these rough surfaces, acting as a barrier to keep them away.

Natural Remedies

If you already have a slater infestation on your raspberry plants, there are several natural remedies that can help eliminate them. These methods are safe for the environment and do not harm beneficial insects or plants. Here are some effective natural remedies:

  1. Beer traps: Slaters are attracted to the smell of beer. Place shallow containers filled with beer near your raspberry plants. The slaters will be lured into the traps and drown in the beer. Remember to empty and refill the traps regularly.

  2. Citrus peel: Slaters dislike the scent of citrus fruits. Scatter citrus peels around your raspberry plants to repel them. Replace the peels every few days to maintain their effectiveness.

  3. Diatomaceous earth: Sprinkle food-grade diatomaceous earth around the base of your raspberry plants. This fine powder is made from fossilized remains of algae and has sharp edges that cut through the exoskeletons of slaters, causing them to dehydrate and die.

  4. Beneficial nematodes: Introduce beneficial nematodes, such as Steinernema carpocapsae, into your soil. These microscopic worms parasitize slaters, effectively controlling their population.

Chemical Control

If natural remedies fail to provide satisfactory results, you may consider using chemical control methods as a last resort. However, it is important to note that chemical pesticides should be used cautiously and sparingly to avoid harming beneficial insects and pollinators. Here are a couple of options:

  1. Insecticidal soap: Apply insecticidal soap directly on the slaters or spray it around your raspberry plants. The soap suffocates the insects by clogging their breathing pores.

  2. Pyrethrin-based pesticides: Pyrethrin-based pesticides are derived from chrysanthemum flowers and are effective against slaters. Read the instructions carefully and apply the pesticide according to the recommended dosage.

Conclusion

Dealing with slaters on your raspberry plants can be a challenging task, but with the right strategies, you can effectively control their population. Remember to implement preventive measures to reduce the risk of infestation, and try natural remedies before resorting to chemical control methods. By taking proactive steps to manage slaters, you can ensure the health and productivity of your raspberry plants. Happy gardening!