Dandelion
Leaves, flowers and stems are a nutritious favourite if unsprayed and away from roadsides.
Foraging fresh weeds and plants is wonderful enrichment, but a few common garden and wild plants are dangerous. Here is what is safe to pick and what to keep well away, 28 plants in all.
Leaves, flowers and stems are a nutritious favourite if unsprayed and away from roadsides.
Fine in small amounts; too much can be gassy, so introduce slowly.
A common lawn weed that pigs enjoy; not the banana.
A soft, safe forage plant in moderation.
Great fresh, introduced slowly. Never lawnmower clippings, which ferment.
Petals and leaves are safe; make sure they are unsprayed.
Safe and often used as a treat; a little astringent.
Culinary herbs that are safe in moderation (parsley is high in calcium).
Petals are safe and sometimes fed as a treat.
Leaves and petals are fine; seeds are too fatty.
Potato and tomato plants, deadly nightshade and their relatives are poisonous.
Highly toxic; affects the heart. Keep well away.
Irritant and toxic; a very common lawn and meadow weed to avoid.
Daffodils, tulips, hyacinths and their bulbs are poisonous.
Many lilies are toxic; keep all of them away from pigs.
Common and English ivy are poisonous.
Berries and leaves are toxic; a winter hazard.
High in oxalic acid and poisonous, even though we do not feed the stalks either.
Tannins make oak toxic to guinea pigs.
Extremely poisonous; even a small amount can be fatal.
One of the most toxic garden plants; never let a pig near it.
Toxic to guinea pigs and most pets.
Deadly poisonous; can look like edible weeds, so forage carefully.
Toxic to the liver; a common yellow wildflower.
Toxic and best avoided when foraging.
Toxic climbing weeds.
Most common houseplants are toxic; keep all of them out of reach.
The plant, like the fruit, contains persin and is toxic.
For fruit and vegetables rather than garden plants, see our food safety checker.
Last updated August 2026 · Written from years of keeping long-haired guinea pigs in the Houston area. This is general care information, not veterinary advice. For anything medical, please see an exotic vet.