Is Sweet Chestnut 'Marigoule' toxic to dogs?

No — sweet chestnut 'marigoule' is listed by the ASPCA as non-toxic to dogs. It is a sensible choice for a home with a dog; a curious nibble will not poison them, though no plant is meant to be eaten. Castanea (true sweet chestnut) is not listed as toxic by the ASPCA and the nuts are edible; treat as non-toxic to cats and dogs. Do not confuse with the unrelated, highly toxic horse chestnut (Aesculus). As with any starchy nut, large amounts may cause GI upset or a choking/obstruction risk, and the spiny burs can injure mouths and paws.

Yes — the ASPCA lists sweet chestnut 'marigoule' as non-toxic to dogs and dogs. A dog that chews a large amount of any foliage can still get a mild, brief stomach upset, so discourage grazing, but it will not be poisoned.

The ASPCA classification Growli uses applies to both cats and dogs: Sweet Chestnut 'Marigoule' is non-toxic to cats as well. See the full sweet chestnut 'marigoule' pet-safety guide for both species.

Reliable ASPCA non-toxic picks for a dog home include spider plant, calathea, parlor palm, peperomia, and most true ferns. Browse the best dogs-safe plants list to check more before you buy.