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Yes, guinea pigs can eat parsley, and it is one of the best herbs for vitamin C. The RSPCA lists it among foods to feed often. Give two or three sprigs per guinea pig, mixed with other greens, a few times a week. Parsley is high in calcium, so rotate it with lower-calcium greens rather than piling it in every day.
| Safe? | Yes, a good regular green |
| How much | 2 or 3 sprigs per guinea pig |
| How often | 3 or 4 days a week, rotated |
| Best served | Fresh, washed, leaves and stalks |
| Watch out for | Too much calcium, gritty sludge in urine |
Is parsley good for guinea pigs?
Yes. Guinea pigs can't make their own vitamin C, and VCA says they need 10 to 50 mg a day. Worked out from the Guinea Lynx food chart, parsley has about 132 mg of vitamin C per 100 g (3.5 oz), with under 1 g of sugar. A few sprigs make a real dent in the daily need.
The downside is calcium. The same chart puts parsley at about 137 mg of calcium per 100 g, with a calcium to phosphorus ratio of 2.4 to 1. The Vet Desk says too much calcium can lead to bladder stones, and Guinea Lynx says excess calcium could contribute to stones in older guinea pigs. That is why parsley works best as one green among several. Our vitamin C guide covers other good sources.
How much parsley can a guinea pig eat?
Two or three sprigs per guinea pig per serving, mixed with other veg such as red pepper and lettuce. That is the Vet Desk's portion. The Vet Desk and RSPCA allow parsley often, even daily, in that amount. We'd follow them on the portion but rotate it in three or four days a week, because rotating greens spreads the calcium load and keeps the diet varied. It counts towards the daily cup of veg in our guinea pig diet guide.
How to serve parsley
- Buy or pick fresh parsley. Bright green, not yellow or slimy. Home-grown is ideal if it hasn't been sprayed.
- Rinse well. Swish the sprigs in cold water to remove grit and residue, then shake dry.
- Mix it in. Tuck two or three sprigs among the other greens rather than serving a pile of parsley alone.
- Store the rest. Stand the bunch in a glass of water in the fridge and use it within a few days.
A good weekly herb rotation: parsley on some days, coriander (cilantro) on others, with basil or mint as an occasional extra. Each brings something different without overloading on any one.
Who should have less parsley?
Guinea pigs with a history of bladder stones or gritty, chalky urine should have parsley only now and then, and your vet may advise lower-calcium greens. Young, pregnant and nursing guinea pigs need more calcium, and Guinea Lynx notes their needs differ from average adults, so ask your vet what suits them.
Straining to wee, blood in the urine or squeaking while weeing can mean bladder stones or an infection. Ring your vet the same day.
What to offer alongside it
Coriander (cilantro) has about half the calcium and makes a good swap. Basil and mint are fine as occasional extras, and peppers and romaine lettuce round out the bowl. See what guinea pigs can eat and our guinea pig care guide.
Parsley questions
Can guinea pigs eat parsley every day?
Some sources allow it. The RSPCA lists parsley among foods to feed often, and the Vet Desk says daily is fine if the portion is controlled. Because parsley is high in calcium, we'd rotate it in three or four days a week, swapping in coriander (cilantro) or romaine on the other days.
Can guinea pigs eat parsley stalks?
Yes. The stalks of fresh parsley are part of the same plant as the leaves, and the RSPCA and Vet Desk don't separate them. Many guinea pigs enjoy the crunch. Wash the whole sprig and give the stalks along with the leaves, counting them within the two or three sprigs.
Is flat-leaf or curly parsley better?
Can guinea pigs eat dried parsley?
We'd stick to fresh. Dried herbs lose much of their vitamin C, which the RSPCA notes breaks down over time and with exposure to air, and they are easy to overfeed. Fresh sprigs are cheap, last a few days in the fridge, and are what the sources mean.
