Parsnip Toxic?

Updated 2026-03-06| 4 min read| 2,354 found this helpful

All plant parts contain phototoxic furocoumarins, while cultivated parsnip roots are safe for human consumption

Contact or ingestion can cause light-triggered skin blistering, rashes, or mucosal ulcers in affected animals

Toxicity ranges from low to moderate for most species, with minimal risk from casual dry contact alone

FAQ

Is Parsnip toxic to Humans?

Phototoxic contact dermatitis, blistering, and discoloration on sun-exposed skin after contact with plant sap; cultivated roots are non-toxic when eaten (Low)

Is Parsnip toxic to Cats?

No specific documented clinical symptoms reported; suspected risk of phototoxic dermatitis on contact with fresh plant sap (Low)

Is Parsnip toxic to Dogs?

Documented phototoxic contact dermatitis on sun-exposed skin areas after contact with plant sap (Low)

Is Parsnip toxic to Horses?

No specific documented clinical symptoms reported; suspected risk of phototoxic skin reactions on contact with fresh sap (Low)

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Toxicity Details

Humans

Low

Phototoxic contact dermatitis, blistering, and discoloration on sun-exposed skin after contact with plant sap; cultivated roots are non-toxic when eaten

Cats

Low

No specific documented clinical symptoms reported; suspected risk of phototoxic dermatitis on contact with fresh plant sap

Dogs

Low

Documented phototoxic contact dermatitis on sun-exposed skin areas after contact with plant sap

Horses

Low

No specific documented clinical symptoms reported; suspected risk of phototoxic skin reactions on contact with fresh sap

Toxicity Snapshot

Toxic PartsEntire plant; cultivated roots intended for human consumption are non-toxic

Exposure RouteDermal contact with fresh plant sap, oral ingestion of aerial plant parts

Toxic CompoundsBergapten; Xanthotoxin; Psoralen; Imperatorin; Angelicin; Isopimpinellin; Peucedanin; Oxypeucedanin; Ostruthol; Isoimperatorin; Pimpinellin; Isobergapten; Marmesin; Phellopterin; Sphondin; Apterin; Archangelin

First Aid & Prevention

First 30 Minutes

• Rinse all affected skin areas immediately with cool soapy water to remove residual plant sap
• Cover all exposed areas completely to block sunlight exposure for a minimum of 48 hours
• If ingested, rinse the mouth thoroughly with clean water and monitor for irritation

Contact Vet Immediately

• Blisters, ulcers, or severe swelling appear on skin or mucous membranes after exposure
• Animal shows signs of pain, difficulty eating, or lethargy post-exposure
• Skin rash or irritation persists for more than 24 hours after exposure

Prevention

• Wear gloves and long sleeves when handling wild parsnip plants to avoid sap contact
• Keep pets away from wild parsnip stands to prevent accidental contact or ingestion
• Wash skin immediately if exposed to parsnip sap before any sun exposure

Treatment & Prognosis

• Apply topical antibiotic and glucocorticoid ointments to affected areas as directed by a professional
• Administer prescribed analgesics to manage pain and inflammation
• Strictly avoid sun exposure to affected areas until all lesions have fully healed

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Professional Toxicology

Scientific NamePastinaca sativa L.s.l.; Pastinaca sativa L.s.str.; Pastinaca sativa L. subsp. sativa; Pastinaca sativa subsp. urens (Godr.) Celak.; Pastinaca sativa subsp. sylvestris (Mill.) Rouy & E.G. Camus

AliasesPastinak、Pastinake、Panais cultivé、Panais sauvage、Pastinaca comune

Toxicity Grade

HumansLow

CatsLow

DogsLow

HorsesLow

Target Organs

SkinOral mucous membranesDigestive tract

Mechanism of Action

• Furocoumarin compounds in plant sap absorb UV light on sun exposure, triggering oxidative damage to skin cells

• Ingestion of large quantities of aerial plant parts can cause mucosal irritation and ulceration in the digestive tract

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Cattle: Phototoxic skin reactions observed after exposure to plant sap

Sheep: Phototoxic skin reactions observed after exposure to plant sap

Goats: Ulcerative stomatitis reported after ingestion of related Apiaceae species, potential for phototoxic reactions

Poultry: Phototoxic effects observed after sap exposure

Ducklings: Contact dermatitis of unpigmented beaks reported after sap exposure

Confusion Risk

The following plants look similar and may be confused:

Dill Anethum graveolens

Visually similar due to shared umbelliferous flower structure; dill has finer, featherier leaves and is non-toxic

Fennel Foeniculum vulgare

Matches parsnip's umbelliferous growth habit; fennel has a distinct licorice scent when crushed and is non-toxic

Common Hogweed Heracleum sphondylium

Similar leaf and flower structure; common hogweed is larger with coarser hairs and is mildly toxic

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Related Toxic Plants

Giant Hogweed

Heracleum mantegazzianum

High toxicity, causes severe, long-lasting phototoxic blistering

Poison Hemlock

Conium maculatum

Severe toxicity, fatal to humans and all animals if ingested in small quantities

Water Hemlock

Cicuta maculata

Severe toxicity, highly fatal, causes rapid fatal nervous system damage after ingestion

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Data Sources

1. CliniTox (Universität Zürich)

This information is for reference only and does not constitute medical advice. If ingestion or poisoning is suspected, seek medical or veterinary attention immediately.