SafeVegetables
Updated:2026-09-28 · Food code:FOOD-VEG-0034
芥菜 配图

Mustard GreensBrassica juncea

Mustard Greens

Brassica juncea
Also known as:mustard greens, gai choy
CatSafe

Cats need no vegetables, so a teaspoon of cooked chopped greens is at most a novel treat with a little fibre.

Feeding advice:One small teaspoon, chopped very finely, without reducing main-diet intake and still within about 10% of daily energy intake.
Preparation:Trim the tough stalks, steam or boil until very soft, then chop very finely with no seasoning.
DogSafe

Very low in calories (about 27 kcal per 100 g) with vitamin A, vitamin C, vitamin K and fibre, so cooked greens make a light vegetable treat.

Feeding advice:1-2 tablespoons of cooked chopped greens per serving (about a teaspoon for a small dog), within about 10% of daily energy intake, with complete dog food as the main diet.
Preparation:Trim the tough stalks, steam or boil until soft, then chop them small, using the tender leaves and stems; add no salt, oil, sugar, garlic or pickles.

Nutrition

Per 100 g, edible portion
Energy · kcal/100g
27
Protein
2.86 g
Fat
0.42 g
Carbohydrates
4.67 g
Dietary fiber
3.2 g
Water
90.7 g

Data source:USDA FoodData Central · SR Legacy · Accessed on:2026-09-28

Cat · Safe feeding conditions

Safe

No additional condition notes for this food

Clinical and veterinary sources

1
Merck Veterinary Manual
Toxicology — Food Hazards (Merck Veterinary Manual)
Accessed:2024-09-15View source ↗
2
WSAVA (World Small Animal Veterinary Association)
Global Nutrition Guidelines
Accessed:2024-10-20View source ↗
Benefits

Cats need no vegetables, so a teaspoon of cooked chopped greens is at most a novel treat with a little fibre.

Feeding advice

One small teaspoon, chopped very finely, without reducing main-diet intake and still within about 10% of daily energy intake.

Preparation

Trim the tough stalks, steam or boil until very soft, then chop very finely with no seasoning.

Notes

**Raw greens are even harsher for cats**, so always cook and chop them; glucosinolates may affect the thyroid over time, so cats with thyroid disease should avoid them, and pickled or salted greens are far too salty.

Dog · Safe feeding conditions

Safe

No additional condition notes for this food

Clinical and veterinary sources

1
Merck Veterinary Manual
Toxicology — Food Hazards (Merck Veterinary Manual)
Accessed:2024-09-15View source ↗
2
WSAVA (World Small Animal Veterinary Association)
Global Nutrition Guidelines
Accessed:2024-10-20View source ↗
Benefits

Very low in calories (about 27 kcal per 100 g) with vitamin A, vitamin C, vitamin K and fibre, so cooked greens make a light vegetable treat.

Feeding advice

1-2 tablespoons of cooked chopped greens per serving (about a teaspoon for a small dog), within about 10% of daily energy intake, with complete dog food as the main diet.

Preparation

Trim the tough stalks, steam or boil until soft, then chop them small, using the tender leaves and stems; add no salt, oil, sugar, garlic or pickles.

Notes

**Raw mustard greens are pungent and harsh**, so always cook them first; glucosinolates are harmless in small amounts but may affect thyroid function over time, so dogs with thyroid disease should skip them, and **never feed salted or pickled greens**.

Disclaimer and individual health notes

This website is for reference only and does not replace a licensed veterinarian. If your pet has eaten a suspected toxin or shows symptoms, contact a veterinarian or an emergency animal hospital immediately.