Can guinea pigs eat leeks?

Better not

Woodgreen lists leeks among vegetables that aren’t safe for guinea pigs. PDSA also names onions, garlic and chives.

Good to know: None of our sources explicitly calls leeks poisonous to guinea pigs, so it’s “better not”, as with onions.

Guinea Pig Fresh Food CalculatorHow many greens, vegetables and fruit does your guinea pig need a day? Enter its weight – we use the German veterinary welfare guideline and show UK guidance to compare.

Better choices, for example

Bell peppers: Yes, as fresh food
Cucumber: Yes, as fresh food
Tomatoes: Yes, as fresh food
Zucchini: Yes, as fresh food

Questions

Can rabbits eat leeks?

Better not. Leeks are on the RSPCA’s list of foods rabbits shouldn’t eat. The Ontario Veterinary College advises avoiding onion, garlic and leeks because they may cause anemia.

Sources

Woodgreen Pets Charity – Poisonous food and plants for guinea pigs
PDSA – Your guinea pigs’ diet

Last checked: October 2026

Arugula: Yes, as fresh food
Basil: Only a little
Beets: Only a little
Bell peppers: Yes, as fresh food
Bok choy: Only a little
Broccoli: Only a little
Cabbage: Only a little
Carrots: Only a little

What can guinea pigs eat?

Can guinea pigs eat leeks?

Better choices, for example

Questions

Sources

Can guinea pigs also eat …?