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The Daily Insight

Are rhubarb leaves poisonous for animals?

Author

John Kim

Updated on April 30, 2026

Rhubarb is a common plant grown for edible consumption, and is also known as the pie plant. The leaves contain soluble oxalate crystals, with less of the crystals being prevalent in the stalk. However, when ingested in large enough quantities in small animals, it can result in poisoning in dogs, cats, and even humans.

In respect to this, will dogs eat rhubarb leaves?

While the stems are safe to be eaten by your dog, rhubarb leaves can cause serious excessive salivation, lethargy, and even kidney failure.

One may also ask, are rhubarb leaves poisonous to pigs? Rhubarb contains naturally occurring oxalic acid. Oxalic acid poisoning can cause muscle twitching, cramps, decreased breathing and heart action, vomiting, pain, headache, convulsions and coma. These are HIGHLY toxic to pigs.

Furthermore, are rhubarb leaves poisonous to deer?

Other plants toxic to deer : Rhubarb and cucumber leaf are toxic to deer. Many otherwise toxic plants do not harm deer because they are ruminants.

What is eating the leaves of my rhubarb?

Slugs, snails and beetles are the main culprits. Before rushing to the chemical cabinet though, remember that you don't eat the leaves. So, unless the damage is very extensive, it may well be best to simply ignore the pests.

Related Question Answers

Does rhubarb make dogs sick?

Toxicity to pets. Rhubarb is a common plant grown for edible consumption, and is also known as the pie plant. However, when ingested in large enough quantities in small animals, it can result in poisoning in dogs, cats, and even humans. Soluble calcium oxalates are present in varying degrees in all parts of the plant.

Are coffee grounds good for rhubarb plants?

Coffee grounds are highly acidic, they note, so they should be reserved for acid-loving plants like azaleas and blueberries. And if your soil is already high in nitrogen, the extra boost from coffee grounds could stunt the growth of fruits and flowers.

Can you eat rhubarb raw?

Botanically, rhubarb is a vegetable (it's related to sorrel and dock) but its thick, fleshy stalks are treated as a fruit, despite their tart flavour. Although it can be eaten raw, rhubarb tends to be too tart this way, and it's usually best when cooked with plenty of sugar.

Are rhubarb leaves poisonous to humans?

A: Rhubarb leaves are toxic and humans should never ingest them. According to the U.S. National Library of Medicine at the National Institutes of Health symptoms can include: Breathing difficulty.

What animals can eat rhubarb leaves?

Deer are the most likely grazers and will eat rhubarb down to the ground. They generally only bother the rhubarb in the early spring, when other food sources are scarce. Raccoons may also occasionally eat rhubarb. Cows and sheep will graze on wild rhubarb in fields, but in a home landscape, this shouldn't be a problem.

What are the benefits of rhubarb?

According to Self magazine's nutrition website — at NutritionData.self.com — rhubarb is a good source of magnesium and a very good source of dietary fiber, vitamin C, vitamin K, calcium, potassium and manganese. It is also low in saturated fat and sodium, and very low in cholesterol.

Do you cut back rhubarb?

Prune back the rhubarb stalks to the ground in late fall or early winter after they begin to die back naturally from frost. Rhubarb may not die back completely if temperatures remain above 40 degrees Fahrenheit, but dead and damaged leaves can still be removed throughout winter, cutting them with shears or a knife.

Can dogs eat rhubarb crumble?

Rhubarb

Another one of our commonly home grown fruits which can be toxic to dogs is rhubarb which again can cause damage to the nervous system, kidneys and digestive tract. Symptoms include tremors, seizures and heart problems so don't let your dog get stuck into your rhubarb crumble or vegetable patch.

Do coffee grounds keep deer away?

The storage of the coffee grounds for 7 to 10 days in a bag, wet, makes them pretty stinky. Perhaps that is what repels the deer and such. I take teaspoons of garlic and throw it on the ground around my plantings and the deer stay away. It is safe for the garden and inexpensive too.

Do deer eat jalapeno plants?

Yeah, deer will eat jalapenos.

Do deer like cucumbers?

Deer don't like thorny vegetables, like cucumber, or vegetables that have hairy peels, like certain varieties of squash. Other vegetables not particularly palatable to deer are tomatoes, peppers, carrot roots, eggplant, asparagus, leeks and globe artichokes.

Can deer eat carrots?

Fruit & Vegetables. Although deer will eat apples, carrots, cabbage, etc., their use is not recommended. They are like candy to a child tasty but of little value in providing a well-balanced and nutritious diet.

Do wild rabbits eat rhubarb?

Raw rhubarb is poisonous to rabbits. In the wild, rabbits will naturally avoid raw rhubarb.

Do deer eat tomatoes and tomato plants?

While deer are often a welcome sight, it's never a good thing to discover the tops of your precious tomato plants (Solanum lycopersicum) and their fruits eaten because of them. Deer will eat almost any foliage they can get when they're really hungry, and your tomato plants are no exception.

Do deer and rabbits eat rhubarb?

Deer are the most likely grazers and will eat rhubarb down to the ground. They generally only bother the rhubarb in the early spring, when other food sources are scarce. The simplest way to keep marauding deer and raccoons out of the rhubarb is to build a wooden frame that fits over the rhubarb plant.

Can deer eat bread?

The worst pattern is people who feed bread one day, apples the next, and then nothing. Wild animals simply can't adjust. Remember that deer are designed for times of accumulating fat and lean times for living off of it.

Do deer eat zucchini plants?

Deer Resistant

Everything is going well, until one morning you check the garden and the plants have been eaten by deer. Your crops have been destroyed over night. Squash and zucchini are resistant to deer.

Will pigs eat humans?

And when they're not either squealing or talking, pigs will eat almost anything – including human bones. In 2012, a farmer in Oregon, America, was eaten by his pigs after having a heart attack and falling into their enclosure.

What should pigs not eat?

In addition to the above, here are some foods that you should not feed to pigs:
  • Almond – Leaves & seeds (only wild or bitter almonds pose a threat)
  • Animal products of any kind.
  • Avocado (the skin and pit especially)
  • Cherries.
  • Chocolate.
  • Corn stalks (high in nitrates)
  • Kale.
  • Nightshade vegetables.

What is poisonous to pigs?

Bracken can cause acute heart failure with lung oedema, while hemlock is extremely toxic in small doses. It affects the nervous system and causes congenital deformities in piglets, and can result in death within hours. Other plants to watch out for include foxglove, cocklebur, henbane, ivy and laburnum.

Are rhubarb leaves poisonous to horses?

Although rhubarb is known to many as a wonderful pie additive, it can be lethal if ingested by horses. While the stems are edible, the sour leaves contain potent toxins that can irritate the digestive system, and cause severe kidney damage, resulting in kidney failure and death.

What plants are poisonous to pigs?

Plants That Are Toxic to Your Pigs
  • Bracken (Pteridium aquilinum) Pigs have been kept in woods with bracken for centuries; indeed, they are often used to destroy it.
  • Acorns The high tannin content in acorn shells (the fruit of the Quercus family) can cause abdominal pain, diarrhoea and abortion in sows.
  • Ragwort (Senecio var.)

Are rhubarb leaves poisonous to sheep?

The flat leaf blade is the toxic part of the rhubarb plant that causes staggering, excessive salivation, convulsions, and death in most classes of livestock.

Is rhubarb good for pigs?

Rhubarb can be toxic to both pigs (and other animals) and humans, because of the oxalic acid. Affects the way the body deals with calcium and can lead to kidney problems. It might well be that the pigs would know not to eat it (they seem to avoid several dangerous plants) but I wouldn't risk it.

Can pigs eat bacon?

Dietary requirements and restrictions are similar between pigs and people. Feeding uncooked pork products to a pig (or a person) can lead to cholera or Trichinosis, but cooked pork is fine in moderation. Health wise, the health/diet impacts for either of you are essentially the same.

Are rhubarb leaves good for anything?

They can be whacked into the compost – they will give your heap a good kick along, and a great nitrogen boost. Use them to suppress weeds! Simply lay the leaves over a problem weed or area, and they will work wonders by smothering them out. Use them as a fun (but inedible) stepping “stone” for kids in the garden.

When can you not eat rhubarb?

Rhubarb stalks are best if harvested in spring and early summer, but they do not become toxic or poisonous in late summer. They can be eaten all summer long. There are two good reasons not to eat them in summer. They tend to get woody in late summer and don't taste as good.

Can you touch rhubarb leaves?

The leaves of rhubarb are poisonous when ingested, the stalk a culinary delight, and the roots were long revered for their medicinal properties. Rhubarb is often sold with some leaves on the stalks; simply trim them off and discard. (They are not toxic to touch).

What causes brown spots on rhubarb leaves?

Brown splotches on rhubarb may be the result of pesticide residue, salts, or a combination of both. These may begin as yellow patches seen upon the leaves, gradually becoming reddish brown. Also, if your rhubarb has brown spots, the culprit may just be a healthy growing rhubarb.

How do you protect rhubarb?

After harvest time, the stems may die back. Just remove all plant debris. Once your ground freezes, it's best to cover rhubarb with 2 to 4 inches of mulch, preferably well-rotted compost; by adding nitrogen to the soil, you're preparing the rhubarb plants for a good spring season.

Are rhubarb leaves poisonous to insects?

Rhubarb leaves contain oxalic acid which can not only stop your heart but makes a great natural pesticide for leaf eating insects. If plant lice (aphids) or other insect pests attack your plants, the acid in the rhubarb leaves should work to suffocate and otherwise disturb them.

How do you keep ants out of rhubarb?

A good least-toxic method is the use of boric acid baits. Boric acid baits can eliminate some ant colonies in about one week. The trick is to not kill the ants at the bait station, but to get the ants to carry the boric acid back to the nest, poisoning the members of the colony that never leave the nest.

How do you keep rhubarb leaves from eating?

Remove dead leaves regularly, and remove all the leaves and stalks before the winter to prevent rhubarb pests from over-wintering in them. If you compost the rhubarb leaves, it is not advisable to put the composted leaves back onto the rhubarb garden. This will help to prevent returning rhubarb pests to your garden.

How do you multiply rhubarb plants?

Splitting your rhubarb plants isn't rocket science. Simply dig around the root clump (6 inches deep (15 cm.)) and lift the whole plant from the ground. Divide the root ball into sections containing at least one bud and up to two to three buds with plenty of roots by cutting down through the crown between the buds.