what do swallowtail caterpillars eat

What Do Swallowtail Caterpillars Eat?

Written by: Gemmali Dizor

Swallowtail caterpillars are the larval stage of the swallowtail butterfly, a beautiful and fascinating species of butterfly that is found in many parts of the world. During their time as caterpillars, they require food in order to grow and develop into adult butterflies. So, what do swallowtail caterpillars eat?

Host Plants of Swallowtail Caterpillars

The first thing to understand about swallowtail caterpillar nutrition is that they are highly specialized feeders. They will only eat the leaves of certain plants, which are known as their “host plants”. These host plants are usually native to the region where the butterfly species is found, and they have evolved to meet the nutritional needs of the caterpillar.

Some of the most common host plants for swallowtail caterpillars include species from the family Apiaceae, such as dill, fennel, and parsley. Other common host plants include species from the families Rutaceae, including citrus plants, and Solanaceae, such as tomatoes and peppers. It is important to note that not all plants from these families are suitable host plants for swallowtail caterpillars and that different species of swallowtails may have different host plant preferences.

You might also like: Narwhal Food

The Importance of a Fresh Supply of Host Plant Leaves

For swallowtail caterpillars to thrive, it is important that they have a fresh supply of host plant leaves to eat. This is because the leaves of these plants contain essential nutrients and compounds that are needed for the caterpillar to grow and develop properly. Caterpillars will typically eat continuously throughout the day, chewing through large amounts of plant matter in order to obtain the nutrients they need.

In order to ensure that your swallowtail caterpillars have a fresh supply of food, it is important to keep the host plant leaves in good condition. This can be done by keeping the plants well-watered and in a location with good light and ventilation. In addition, it may be necessary to replace the leaves periodically in order to maintain a healthy and nutritious food supply.

You might also like: Painted Lady Caterpillars Food

The Benefits of a High-Quality Diet

Providing swallowtail caterpillars with a high-quality diet has a number of important benefits. Firstly, it helps to ensure that they grow and develop properly, reaching their full size and weight as quickly as possible. Secondly, it helps to improve their overall health and well-being, reducing the risk of disease and other health problems.

Finally, providing swallowtail caterpillars with a high-quality diet can also help to improve their chances of survival as adult butterflies. This is because the caterpillar stage is a critical time in their life cycle, and the food that they eat during this time can have a direct impact on their adult size, coloration, and mating behavior.


In conclusion, swallowtail caterpillars are highly specialized feeders that require a specific type of host plant in order to thrive. Providing them with a fresh and nutritious supply of food is essential for their growth, health, and survival, and can help to ensure that they develop into healthy and beautiful adult butterflies.

Our Latest Posts

can sugar gliders eat avocado
can sugar gliders eat broccoli
can sugar gliders eat blackberries
can sugar gliders eat oranges
can sugar gliders eat celery
what fruits can sugar gliders eat