Can Rabbits Eat Mustard Greens? Nutritional Value and How To Feed

Can Rabbits Eat Mustard Greens

Rabbits are herbivorous animals that require a diet rich in fiber, vitamins, and minerals to maintain good health. While hay is a staple of their diet, fresh vegetables can also be an important part of their daily intake. Mustard greens are a leafy green vegetable that is often included in the diets of humans, but can rabbits eat mustard greens too? 

In this article, we will explore the nutritional value of mustard greens and whether they are safe for rabbits to eat.

Can Rabbits Eat Mustard Greens?

The answer is yes, rabbits can eat mustard greens, and they are actually quite beneficial for their health. Mustard greens are a low-calorie, nutrient-dense vegetable that contains high levels of vitamins A, C, and K, as well as minerals such as calcium and potassium. They are also a good source of dietary fiber, which is essential for maintaining a healthy digestive system in rabbits.

However, as with all fresh vegetables, it is important to introduce mustard greens to your rabbit’s diet gradually to prevent digestive upset. Additionally, it is important to wash the mustard greens thoroughly before feeding them to your rabbit to remove any dirt or pesticides.

Nutritional Value of Mustard Greens for Rabbits

Mustard greens are an excellent source of vitamins and minerals that are important for a rabbit’s overall health. Here are some of the key nutritional benefits of mustard greens for rabbits:

  1. Vitamin A: Mustard greens are rich in vitamin A, which is essential for maintaining healthy vision and skin in rabbits. Vitamin A also plays a role in the immune system and helps to protect rabbits from infections.
  2. Vitamin C: Mustard greens are a good source of vitamin C, which is an antioxidant that helps to protect rabbits from free radicals. Vitamin C is also important for collagen production and wound healing.
  3. Vitamin K: Mustard greens are high in vitamin K, which is important for blood clotting and bone health. Vitamin K deficiency can lead to bleeding disorders in rabbits.
  4. Calcium: Mustard greens are packed with calcium, which is essential for strong bones and teeth in rabbits. Calcium deficiency can lead to skeletal problems such as fractures and osteoporosis.
  5. Potassium: Mustard greens are high in potassium, which is important for regulating fluid balance and maintaining healthy muscle function in rabbits.

How to Feed Mustard Greens to Rabbits

Mustard greens can be a healthy addition to your rabbit’s diet, but it is important to feed them in moderation and introduce them gradually. Here are some tips for feeding mustard greens to your rabbit:

  1. Start small: When introducing mustard greens to your rabbit’s diet, start with a small amount and gradually increase the portion size over several days. This will allow your rabbit’s digestive system to adjust to the new food and prevent digestive upset.
  2. Wash thoroughly: Before feeding mustard greens to your rabbit, wash them thoroughly to remove any dirt or pesticides. You can also remove the tough stems and chop the leaves into small pieces for easier digestion.
  3. Variety is key: While mustard greens are a healthy vegetable for rabbits, it is important to offer a variety of fresh vegetables to ensure a balanced diet. Other vegetables that rabbits can eat include kale, spinach, carrots, and bell peppers.
  4. Monitor your rabbit’s health: After introducing mustard greens to your rabbit’s diet, monitor their health for any signs of digestive upset, such as diarrhea or a decreased appetite. If your rabbit experiences any health issues, stop feeding them mustard greens and consult a veterinarian.

What You Should Not Feed Your Rabbit

Avoid feeding spinach, parsley, beet greens, mustard greens, sprouts, radish tops, and Swiss chard to rabbits younger than six days. Instead, mix other leafy greens that are low in oxalic acid, like romaine lettuce, kale, spring greens, frisee lettuce, carrot tops, turnip greens, cilantro, chicory, arugula, radicchio, wheatgrass, dandelions greens, dill leaves, basil, mint, and so on.

Also, as a general rule, 10-15% of rabbits’ daily food should come from fresh plants, 80% or more should come from grass hay, and the rest should be high-fiber pellets. Lastly, don’t forget to start giving this or any other plant slowly to see if it makes your pet sick. Also, your source shouldn’t have any pesticides or herbicides on it.

Risks with oxalates

Your pet rabbit and many other animals shouldn’t eat plants with a lot of oxalates or oxalic acid. These chemicals bind to minerals in the stomach, which makes the minerals less bioavailable. For example, it will stick to iron and make iron ferrous.

Second, they will make calcium stones in the urine (uroliths) worse by binding to calcium. If your rabbit has calcium uroliths, don’t feed it foods that are high in oxalic acid.

Mustard Greens Species

This plant has two species: Sinapis hirta and Brassica juncea, both of which belong to distinct genera.

Sinapis hirta

Sinapis hirta

Sinapis hirta, A.K.A. white mustard, B. hirta, or Brassica alba, has yellow blooms and woolly seed pods. It grows naturally throughout the Middle East, the Mediterranean region, and North Africa.

It is mostly grown for its seeds. Nonetheless, it functions as a mature crop and feedstock.

Brassica juncea

Common names for this plant include brown, oriental, leaf, Chinese, Indian, and vegetable mustard. It comes from the foothills of the Himalayas. But, the United States, the United Kingdom, India, Denmark, and Canada cultivate it. 

This cultivar’s seeds, stems, and leaves are edible, and it is sometimes used as green manure and in phytoremediation or heavy metal removal.


Mustard greens are a safe and healthy vegetable for rabbits to eat. They are a good source of vitamins and minerals that are important for a rabbit’s overall health, and they can be fed in moderation as part of a balanced diet. However, it is important to introduce mustard greens gradually.


Can rabbits eat the stems of mustard greens?

Mustard greens can be consumed by rabbits as part of their diet of leafy greens. It is full of nutrients but contains an excessive amount of oxalic acid. However, the stems are quite fibrous and rabbits should not be eating so much fiber combined with oxalic acid. 

Can rabbits eat mustard kale?

They will experience unpleasant gas. Never give kale or spinach to your rabbit. Due to the high levels of oxalates and goitrogens, kale and spinach might create health concerns over time.

Can rabbits eat garlic mustard leaves?

Alliaria petiolata, or garlic mustard, despite its name, is acceptable to feed guinea pigs and rabbits but has a strong flavor. Humans can also appreciate this plant.

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