Dozens of common fruits and vegetables deliver a meaningful dose of potassium, and several pack far more than the banana most people think of first. Adults need between 2,600 and 3,400 mg of potassium daily, depending on sex, yet most people fall short. Loading your plate with the right produce is one of the simplest ways to close that gap.
Vegetables With the Most Potassium
Starchy vegetables and leafy greens tend to lead the pack. A single raw plantain delivers around 1,315 mg of potassium, making it one of the most concentrated sources you can buy. That alone covers roughly a third to half of a full day’s needs.
Here are some of the strongest vegetable sources per standard serving:
- Plantain (1 raw): 1,315 mg
- Avocado (1 whole): roughly 728 mg (about 364 mg per half)
- Cantaloupe (1 cup): 417 mg
- Kiwi (1 cup, sliced): 562 mg
Sweet potatoes, white potatoes, beets, Swiss chard, and spinach are also reliably high in potassium. A medium baked potato with the skin on typically delivers 900 mg or more. Cooked spinach and Swiss chard each provide upward of 800 mg per cup because cooking concentrates the leaves dramatically. Tomato paste and tomato sauce are sneaky high sources too, since the concentration process removes water but keeps the minerals.
Fruits That Pack the Most Potassium
Bananas get all the credit, but a medium banana contains about 451 mg of potassium. That’s respectable, not exceptional. Dried and concentrated fruits easily surpass it. A cup of dehydrated apricots contains a staggering 2,202 mg. Even canned apricots in heavy syrup provide around 361 mg per cup.
Other fruits worth knowing about:
- Passion fruit (1 cup): 821 mg
- Dried pears, stewed (1 cup): 658 mg
- Kiwi (1 cup, sliced): 562 mg
- Pomegranate juice (1 cup): 533 mg
- Orange juice from concentrate (1 cup): 443 mg
- Banana (1 medium): 451 mg
- Tangerines (1 cup sections): 324 mg
- Sweet cherries (1 cup): 306 mg
- Grapefruit, pink or red (1 cup): 310 mg
- Black currants (1 cup): 361 mg
Dried fruits are particularly dense because removing water concentrates every mineral. If you’re trying to increase your intake without eating large volumes of food, a small handful of dried apricots or a glass of pomegranate juice is efficient.
How Much You Actually Need
The National Institutes of Health sets the adequate intake for potassium at 3,400 mg per day for adult men and 2,600 mg for adult women. During pregnancy that rises to 2,900 mg, and during lactation it’s 2,800 mg. These numbers are the same whether you’re 25 or 75.
Most Americans consume well under these targets. The mineral plays a central role in balancing sodium levels, supporting normal blood pressure, and keeping your muscles and heart rhythm functioning properly. Low potassium can cause fatigue, muscle weakness, and cramps. Severely low levels may lead to heart rhythm disturbances. On the other end, potassium levels that climb too high (typically above 6.0 mEq/L in the blood) can cause weakness, palpitations, and in extreme cases dangerous heart rhythms, though this is almost always related to kidney problems or medications rather than diet alone.
Cooking Methods Matter
Potassium is water-soluble, so boiling vegetables can drain a significant amount of the mineral into the cooking water. Research on kale and spinach illustrates just how dramatic the loss can be. After 10 minutes of boiling, kale retained only about 63% of its original potassium, and spinach kept just 50%. Extend that to 15 minutes and kale dropped to roughly 31% retention. After 20 minutes of boiling, kale held onto a mere 13% of its potassium.
The takeaway is practical: if you’re eating greens specifically for potassium, steaming, roasting, or microwaving preserves far more of the mineral than boiling. If you do boil, keep the time short (five minutes of blanching kept about 88% of the potassium in kale and 66% in spinach), or use the cooking liquid in a soup or sauce so the dissolved minerals aren’t lost.
Raw fruits, of course, don’t face this problem. That’s one reason whole fruit, dried fruit, and fruit juice are such reliable potassium sources.
Building a High-Potassium Day
Hitting 2,600 to 3,400 mg doesn’t require exotic ingredients. A realistic day might look like this: a banana with breakfast (451 mg), half an avocado at lunch (364 mg), a baked potato at dinner (900+ mg), and a cup of orange juice at some point (443 mg). That alone gets you past 2,100 mg before counting any other foods, sauces, or snacks. Add a cup of cooked spinach or a serving of cantaloupe and you’re well within range.
Beans and lentils are also excellent sources, regularly delivering 600 to 700 mg per cooked cup. While they aren’t fruits or vegetables, they pair naturally with the produce on this list and can help round out your intake.
Who Should Be Careful With Potassium
People with chronic kidney disease are the main group who need to watch potassium intake carefully. Healthy kidneys filter excess potassium efficiently, but compromised kidneys may not. Clinical guidelines for patients with stage 3 to 5 kidney disease have traditionally recommended limiting potassium to 2,000 to 4,000 mg per day, with stricter limits (1,500 mg or less) for advanced stages. If you have kidney disease, your care team will set a specific target for you. For everyone else, getting more potassium from whole fruits and vegetables is generally beneficial and difficult to overdo through food alone.