Pesteleminater Log

Field slugs: Control and prevention

In many regions of the world, the field slug

is regarded as an invasive species on par with the feared killer snail. This is because both of these snails feed on native species. Because it causes damage to vegetable gardens and other types of crops, it is classified as a pest. Both ornamental plants and crops can fall victim to its voracious appetite, particularly in the fall when population levels are forecasted to rise.

Field Slugs as a pest

Either the snail moves to new areas on its own or it moves its eggs by concealing them in other organisms, such as plants, that are then moved to new areas. Therefore, you should always be very wary of new plants and check them to ensure that they do not contain any unwanted snail eggs. Eggs are easy to identify due to their milky white color and their appearance in the form of small lumps.

5 Preventative measures

There are many different approaches to developing natural barriers.

Check new plants.

  • If there is a possibility that slug eggs are present, the soil should be replaced, and newly purchased plants should be washed.
  • In order to remove any slug eggs from the root system of new plants, you should, if at all possible, rinse the entire system.

Put the garden back in order.

  • It is important to get rid of leaf piles, fruit, and anything else that could provide slugs with a place to hide or food.
  • It is best to avoid covering the vegetable garden because doing so can provide slugs with a protected environment.
  • Snail eggs have a propensity to overwinter in the holes that were created by digging in the autumn. They are safe in this location because of the warmth of the soil. Therefore, postpone digging until such time as the female has stopped laying eggs.


  • Slugs can be prevented from entering the compost by surrounding it with barriers or by using compost that has a lid.
  • Choose compost that has been heated, as this will eliminate the snail eggs.


  • Mow the grass and water the plants. Mollusks known as slugs have a difficult time surviving in arid climates due to their high water content.
  • Because snails are nocturnal, it is best to water in the morning rather than in the evening because evening watering creates ideal conditions for snails.

Create natural obstacles

  • Snails do not like to move easily over surfaces that are rough or angular.
  • The absence of soil around plants can also constitute a barrier. Lime and sawdust spread out in a thick layer also serve as an effective barrier; however, it is important to keep in mind that plants may be harmed by this method.
  • Be aware that certain obstacles, such as ash or rock flour, can be washed away by rain and, as a result, need to have their supplies routinely refreshed.

Get rid of field slugs

The following measure can be taken to control field slugs:

  1. Obstacles: putting up barriers, such as copper tape on pots and raised beds, is an efficient method of providing protection. If you want to protect a large area, it can be prohibitively expensive to purchase professional products; consequently, you may find it advantageous to use lime, ash, or sawdust instead; however, you should pay attention to whether or not the plants are harmed.
  2. Repellents for slugs: the chafer can be controlled with substances such as iron phosphate (Ferramol), which does not have an impact on other animals.
  3. Nematodes are an innovative approach to the natural and efficient management of field slug populations. Nematodes are very small worms that only infect and ultimately kill snails; they do not cause any harm to any other organisms. Take the case of Nemaslug, for instance.
  4. Note that there are a number of products available that can improve the effectiveness of slug control. Some examples of these products include slug traps and feeders that extend the effectiveness of slug repellents. Slug populations can also be effectively reduced through collection, which can be done, for example, in a plastic bag. After that, slugs will congregate at that location, making it much simpler to remove them.

Additional steps to maximize effectiveness of slug control

  • Mowing your lawn frequently and leaving patches of uncut grass can help prevent the spread of slugs. The slugs will have a more difficult time moving around as a result of this.
  • If there are slugs in the garden, you should not spread mulch or straw over the ground.
  • If you have slugs, you should let your neighbors know about it so that they can be on the lookout for them and help you control them.
  • When you go to collect slugs, the best time to do so is either early in the morning or late in the evening, when it has been raining or when the dew has just fallen. Always make sure to protect your hands by donning gloves when handling snails. To rid the garden of slugs requires a significant amount of labor, as you must diligently collect slugs on a daily basis for a number of weeks.

Gather and kill field slugs

  • After the snails have been gathered, they have to be put to death as quickly and humanely as possible:
  • Just behind the snail's head, make a cut or chop in it so that it dies instantly.
  • The snail, which has a very sensitive gliding sole, suffers excruciatingly painful deaths when it is killed with salt, when it is boiled, or when it is frozen.
  • Because dead snails tend to attract more snails, it is important to collect all snail parts in a bag, secure it, and then place it in the garbage can.
  • If you want to prevent snails from multiplying and taking over your garden, never throw alive snails away in the trash or compost.

Tip: The best time to control slugs is when there is a lot of moisture in the air or in the evening after the dew has settled. If this is the case, there is a greater likelihood that the slugs will be present. It is in everyone's best interest to collect the slugs before they grow to be a significant size and begin laying eggs.

Facts about the Field Slug

The agar snail and its relative, the killer snail, are very different in size. It only reaches a height of 2 to 6 centimeters and can typically be identified by the light or dark gray color it exhibits.

It does best in the presence of water and in damp environments. Particularly well-liked are a wide variety of salads, as well as cabbage. In most parts of the world, you won't find it very often, but the population tends to rise in the fall.

It is possible for the eggs to survive temperatures as low as -35 degrees Celsius by spending the winter buried in the ground. Therefore, not even a particularly harsh winter can have an effect on the population.

Frequently asked questions: Field slug

What do Field slugs look like?

Field slugs are small, thin mollusks with a slimy, smooth skin. They are usually light brown or gray in color, and have a rounded body shape. They can grow to be about 1-2 inches long.

What do Field slugs eat?

Field slugs are herbivorous, meaning they primarily feed on plants. They are known to eat a variety of vegetation, including leaves, stems, and flowers. They may also consume fungi and algae.

Where do Field slugs live?

Field slugs are found in a variety of habitats, including gardens, fields, and forests. They are most commonly found in moist, cool environments, and are often found hiding under rocks, leaves, or other debris.

How do Field slugs reproduce?

Field slugs are hermaphroditic, meaning they have both male and female reproductive organs. They can self-fertilize, but often mate with other slugs to produce offspring. They lay clusters of small, oval-shaped eggs in moist soil or other suitable environments.

Are Field slugs harmful to plants?

Field slugs can be harmful to plants, particularly seedlings and young plants, as they feed on the foliage and stems. They can also damage mature plants by eating holes in the leaves and stems.

How can I control Field slug populations in my garden?

There are several methods for controlling Field slug populations in a garden, including handpicking and removing the slugs, setting out traps, and using slug bait or slug-repelling plants. It is also important to remove any debris or hiding places where the slugs may shelter, as this can help reduce their numbers.

Pesteleminater Log
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