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Glam Journal

How do you take care of a black swallowtail caterpillar

Author

Emily Wilson

Updated on April 16, 2026

Bring in some sprigs of fresh plant and put them in the jar. I usually leave the eggs alone until the caterpillars are big enough to spot with a naked eye–generally two days. You’ll see they’re tiny and hard to monitor, so again, leave them alone and just provide fresh air and fresh host plant until they grow bigger.

How do you raise a black swallowtail caterpillar?

Bring in some sprigs of fresh plant and put them in the jar. I usually leave the eggs alone until the caterpillars are big enough to spot with a naked eye–generally two days. You’ll see they’re tiny and hard to monitor, so again, leave them alone and just provide fresh air and fresh host plant until they grow bigger.

What do black swallowtail caterpillars drink?

The black swallowtail caterpillar feeds on many different plants in the Apiaceae, or carrot family, including Queen Anne’s lace, celery, parsley, carrots, dill, and parsnip. The butterfly eats nectar from a variety of plants including clover, milkweed, thistles, and phlox.

How long does it take for a black swallowtail caterpillar to turn into a chrysalis?

StageTypical DurationEgg stageGenerally 4 to 10 days, depending on temperature and host plantCaterpillar (larval) stage3 to 4 weeksChrysalis (pupal) stage10 to 20 days (except for overwintering pupae)Adult butterfly stage6 to 14 days

Why are my black swallowtail caterpillars dying?

In nature, they usually have plenty of humidity from the plants around it. In captivity, they sometimes die from lack of humidity. The butterflies fully form yet die before emerging. … It is easy to track/carry spores with you as you touch a plant in nature with the spores before picking food for your caterpillars.

What do you put in a caterpillar cage?

Ideas for an enclosed caterpillar home include old fish tanks or small aquariums with a screen lid, large glass or clear plastic containers with holes punched in the lid and/or sides (punch from inside out if you can so the sharp edges are on the outside of the container), critter containers from pet stores, etc.

Do black swallowtail caterpillars need water?

When the caterpillar is in his chrysalis he’s called a pupa. In this stage the caterpillar digests his own body to create his butterfly form. Although the pupa doesn’t need food in this stage, he does need moisture. If you’re caring for a chrysalis, mist the cage to keep the pupa healthy.

What do you feed swallowtail caterpillars?

Food sources (or host plants) for Black Swallowtail larva or caterpillars: parsley, dill and carrot tops (Other larva food sources include Queen Anne’s Lace, Fennel and Turnips.)

Do swallowtail caterpillars bite?

Most caterpillars are safe to handle, like these Black Swallowtails. … There are several caterpillar species in the Southeast with stinging spines that can cause pretty severe pain and even harsher reactions. I’ve highlighted three of the worst below.

Are black swallowtail caterpillars poisonous?

Black swallowtails are mimics of poisonous pipevine swallowtails. … The pipevine swallowtail is highly poisonous, for its caterpillars feed on plants in the genus Aristolochia, which are defended by aristolochic acids.

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How do you raise a spicebush swallowtail?

You can plant host plants, which are the main food source of caterpillars, in spring or summer to attract egg-laying butterflies. Planting nectar plants, such as mimosa and milkweed for both spicebush and black swallowtails, also works perfectly. Finding butterfly eggs of spicebush or black swallowtail isn’t hard.

What plants do swallowtail butterflies like?

Butterfly Nectar Plants Black swallowtails, like other butterflies, prefer flat-topped flowers or plants with clusters of small flowers. Favorites include phlox, gaillardia, zinnias, butterflyweed, and milkweed.

Do black swallowtail caterpillars eat each other?

Even on a large host plant, they often attack and eat other caterpillars. They are one species that are often raised separately, one per plant stem. Pipevine swallowtails and gold rim (polydamas) swallowtails are extremely cannibalistic in captivity. Once they are near pupation, many farmers raise them separately.

Can you touch black swallowtail caterpillars?

One more note about the Black Swallowtail caterpillar: it is safe to humans to hold and touch the caterpillar. It is not always safe for the caterpillar, however. The smaller they are, the more delicate they are. Also, they will molt as they grow (see life cycle of a butterfly for more information).

Do swallowtail caterpillars eat carrot tops?

Adult butterflies prefer nectar from various plants, but they love to lay their eggs on carrot family members and the caterpillars chow down on their leaves. … long caterpillars with voracious appetites. Do black swallowtails eat carrots? No, but their offspring definitely enjoy the foliage.

What happens if a caterpillar does not make a cocoon?

What happens when a caterpillar can’t form a cocoon? … At this point the caterpillar will continue to feed while there is food available, until it can no longer grow. Eventually, feeding slows down and eventually stops. Since the caterpillar does not form a cocoon or pupae it eventually dies from dehydration usually.

Can you move a swallowtail chrysalis?

The answers are yes, you may relocate the creatures once they make their chrysalis, and no, the caterpillars do not need to chrysalis on milkweed. … You can feed them milkweed leaves and keep them in a clean container, then relocate the chrysalises once they’ve formed.

Are black swallowtail butterflies rare?

The black swallowtail is found throughout southern Canada, most of the eastern and mid-western United States west to the Rocky Mountains, and southwest into Arizona and northern Mexico. It is rare in the Florida Keys, apparently due to the absence of its carrot family (Apiaceae) hosts (Minno & Emmel 1993).

Do black swallowtail caterpillars eat rue?

Rue Plants for Butterflies The rue plant is the Host Plant for three different types of butterflies. The Black Swallowtail, Anise Swallowtail, and the Giant Swallowtail butterflies use this plant (among others) to lay their eggs, so their caterpillars can eat the foliage and grow.

How do you keep a pet caterpillar?

Avoid touching the caterpillar with your hands, because caterpillars are so fragile that you could harm them. Instead, gently place the leaf or stem into a container, such as a plastic jar or box. Take a few more stems or leaves from the plant your caterpillar was found on, and identify the plant for future reference.

Do caterpillars eat lettuce?

Caterpillars are simply larvae that are waiting to transform into moths and butterflies. They are often very hungry guests in the garden, however unwelcome. … They love to eat garden greens like chard, kale, and lettuce.

How do I make a caterpillar habitat?

If you find your own caterpillars in the wild, you need to create a habitat for them. A large glass jar or small aquarium works great. Make sure it has a secure lid with lots of breathable fresh air (more than just poking a couple holes in a lid). Try using cheesecloth or mesh over the top.

Are Spicebush Swallowtails harmful?

Although they have two pairs of ferocious eyespots, spicebush swallowtail caterpillars are harmless. The worms usually feed on sweet bay, spicebush, and sassafras as well as tulip tree. They typically fold leaf margins over to form a silk-lined shelter in which they retreat when they are not feeding.

What Caterpillar looks like bird poop?

Papilo cresphontes, common name bird poop caterpillar, uses camouflage to resemble bird droppings. Younger instars often rest in plain view on the upper surfaces of leaves where you would expect to find bird droppings.

How long do swallowtail butterflies live?

Most species of swallowtail have a life expectancy just around 1 month. Some, like the black swallowtail (Papilio polyxenes) live only 10-12 days, while other species have been recorded living up to 45 days.

Do swallowtail caterpillars eat parsley?

Note the plant the caterpillars are eating. Swallowtails will host on members of the Apiaceae family, which includes parsley, Queen Anne’s Lace, carrot, celery, fennel and dill. Swallowtails will also host on plants in the citrus (Rutaceae) family, including rue bushes and lemon, lime and orange trees.

Will swallowtail caterpillars eat cilantro?

Parsley, dill, cilantro, and fennel are in the same plant family, and the black swallowtail larvae will feed on any of them. Transfer the caterpillars to the fennel, which can accommodate a few of these insects.

Where do black swallowtail butterflies lay their eggs?

For example, the Black Swallowtail butterfly lays eggs on the carrot family of plants such as fennel, dill, parsley and carrot. They also use the Rue plant. The Monarch butterfly host plants are the family of milkweed plants. The Gulf Fritillary butterfly will lay eggs on passion vines.

Are swallowtail caterpillar omnivores?

Herbivore. Leaves from the parsley family: fennel, dill, carrot, celery, Queen Anne’s lace, and others.

Do black swallowtail caterpillars eat carrots?

And sure enough, munching their way along two robust stalks were a host of black swallowtail caterpillars. Black swallowtails prefer to lay eggs on carrot, celery, dill, fennel, parsley, Queen Anne’s lace and other members of the carrot family. In my garden, they seem to prefer the fennel over all others.

Can you buy swallowtail caterpillars?

You may purchase your host plant from Shady Oak Butterfly Farm or from a local plant nursery. … Be certain the plant has not been sprayed with insecticides, including the organic pesticide, BT. Caterpillars usually take from one to three weeks to reach pupation size.