Do Slugs Eat Courgette Plants: Prevention and Solutions for Your Garden

Do slugs eat courgette plants? This is probably one of the most frequently asked questions among the panoply of questions that gardeners ask. This article will elucidate this inquiry, delving deep into the intriguing world of slugs, courgette plants, and the garden ecosystem.

Do Slugs Eat Courgette Plants?

Slugs can eat courgette plants, especially their leaves. Slugs and snails tend to target courgette plants from when they are very young all the way up to when they are flowering and fruiting.The leaves of courgette plants are extremely tasty to slugs. Snails and slugs love to eat courgette plants from the time they’re tiny until they’re ready to bear fruit.

The good news is that you can protect your courgette plants, petunias, cosmos plants and many more from slugs in a number of different ways.

Planting salad herbs and vegetables that slugs and snails don’t like for, including lemon balm, mint, nettles, sorrel, wild garlic, and chives, can help protect your courgette plants from being devoured.

One tried and tested method by the team over here at Toodlehub, beyond just keeping the yard tidy, is to create a barrier around the young plants using things like copper tape or recycled plastic water bottles.

Slugs favour rotting substances and dead organisms, both of which are commonly found in garbage.

Planting a wide variety of vegetables makes it less appealing to pests like slugs and snails. This is especially true with plants with hairy foliage, rough surfaces, and strong fragrances.

Understanding Slugs

Slug Description

Slugs, belonging to the family Gastropoda, are typically grey, cream, or brown soft-bodied molluscs without a protective shell. This ectothermic creature is often vilified for its voracious appetite, feeding on a diverse range of plant species, which may unfortunately include courgette plants.

Life Cycle of Slugs

The life cycle of slugs is a fascinating process. It commences with the laying of tiny, spherical, pearly-white eggs in damp crevices or beneath plant debris. Following an incubation period, juvenile slugs hatch and begin their relentless feeding. They mature within four to six months, reaching reproductive maturity and beginning the cycle anew.

Natural Habitat of Slugs

Being poikilothermic, slugs prefer cool, damp environments. They thrive in areas rich in organic matter, including garden soil, compost heaps, and areas under stones or fallen logs. A garden, especially one with ample foliage and moist conditions, can become an idyllic slug habitat.

Spotlight on Courgette Plants

Features of Courgette Plants

Courgette plants, also known as zucchini, are a summer squash variant that exhibits verdant foliage and produces elongated, cylindrical fruit. These plants exhibit monoecious characteristics, producing both male and female flowers on the same plant, thereby enhancing pollination.

Ideal Growing Conditions for Courgette Plants

Courgettes are sun-loving plants that crave well-drained soil rich in organic matter. An ideal pH would be around 6.0-7.5, and they relish a position with full sun exposure. These conditions, while favourable for courgettes, can inadvertently attract slugs.

The Battle: Slugs vs Courgette Plants

Signs of Slug Damage

Slug damage is distinct, often characterized by irregular, ragged holes in leaves, stems, and fruit. Moreover, the telltale sign of their silvery, slimy trail can provide conclusive evidence of their nocturnal visitations.

Why Slugs Are Attracted to Courgette Plants

Slugs are particularly drawn to courgette plants due to their lush, broad leaves and high moisture content. Furthermore, the tender, young shoots of courgettes can offer a succulent feast for these creatures.

Prevention Measures

Garden Maintenance

Maintaining garden hygiene by eliminating slug hideouts, such as piles of leaves or garden debris, can mitigate slug infestations. Also, watering plants in the morning ensures the soil surface dries by evening, deterring these moisture-loving pests.

Natural Predators

Natural slug predators, such as frogs, toads, hedgehogs, and certain bird species, can provide a biological control method. Encouraging these creatures into your garden can help balance the slug population.

Barriers and Traps

Employing barriers like copper tape around plant bases or beer-filled slug traps can deter or trap slugs, reducing their numbers.

Solutions for Slug Infestation

Natural Remedies

Natural deterrents such as crushed eggshells, coffee grounds, or diatomaceous earth sprinkled around plants can discourage slug invasion.

Commercial Control Products

Several slug pellets or slug-resistant mulch are available commercially. However, usage should be judicious to minimize environmental harm.

Encouraging Healthy Plant Growth

Healthy plants are more resilient to pest attacks. Adopting practices like regular watering, proper fertilization, and adequate spacing can stimulate vigorous plant growth.

Incorporating Marigolds into Your Garden

Marigolds, renowned for their vibrant colours, are not just decorative but also exhibit pest-repellent properties.

Biodiversity for Pest Control: Your Courgette Garden’s Allies

Ground Beetles

Ground beetles, nocturnal predators, prey on slugs, thereby offering a natural control method.


Phasmarhabditis hermaphrodita, a type of nematode, is a microscopic worm that parasitizes slugs, controlling their population.

Creating a Balanced Ecosystem in Your Courgette Garden

Creating a balanced garden ecosystem is the ultimate goal for pest resistance. This involves introducing beneficial plants and organisms, maintaining healthy soil, and mindful watering.

Why Grow Marigolds?

Marigolds, besides their aesthetic appeal, emit a strong scent that deters many pests, including slugs, and they can be an interesting choice for your garden.

Marigolds: An Interesting Choice

Marigolds, with their vibrant hues, can provide a contrasting palette against the lush green of courgette plants. Moreover, their pest-repelling properties make them an advantageous addition to your garden.

Grow Marigolds and Courgettes from Seed

Growing marigolds and courgettes from seed is an economic and gratifying endeavour. With proper care, both these plants can flourish, providing an attractive and productive garden.

The Bigger Picture: Balanced Ecosystem in Your Garden

Importance of Pest Control

Pest control is pivotal for maintaining a balanced garden ecosystem. It ensures that no single organism can monopolize resources, thereby promoting biodiversity.

Encouraging Beneficial Insects and Organisms

Fostering beneficial insects and organisms can naturally check pest populations. This includes creatures like ladybirds, hoverflies, and predatory mites.


Slugs can eat courgette plants. Both snails and slugs eat courgette leaves and can be a problem for newly plant courgette plants, especially the leaves. From their earliest stages as seedlings to their last stages as mature plants, courgette plants are a favourite target for slugs and snails throughout their entire life cycles.
The good news is that there are many measures you can take to protect your courgette plants from being devoured by slugs.

Growing lemon balm, mint, nettles, sorrel, wild garlic, chives, and other salad herbs and vegetables that slugs and snails don’t care for can help protect your courgette plants from being devoured.

Another method is to create a barrier around the young plants, using things like copper tape or recycled plastic water bottles.

Slugs favour rotting garbage and other decomposing substances.

Planting a wide variety of plants together makes courgette less enticing to slugs and snails, especially those with hairy foliage, rough surfaces, and strong scent.

Overall, slugs can indeed feast on courgette plants. However, with the appropriate preventive and control measures, coupled with the introduction of companion plants like marigolds, gardeners can manage slug populations. Ultimately, the creation of a balanced ecosystem ensures a thriving, diverse garden that can resiliently counter slug invasions.

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