How much potassium does fennel contain?
Dec 10, 2025
Source: Cainiu Health
Dr. Sun Lianqing
Introduction
Fresh fennel is high in water content and relatively low in potassium, containing approximately 200 to 250 mg per 100 grams. It has a tender, fresh taste and is suitable for use in cold salads or light stir-fries, providing a moderate amount of potassium to the body. Dried fennel, having undergone dehydration, has concentrated nutrients and a higher potassium content—reaching 280 to 300 mg per 100 grams—and is commonly used as a seasoning.
Generally, per 100 grams of fennel contains approximately 200 to 300 milligrams of potassium, with variations between fresh and dried forms. If in doubt, it is recommended to consult a healthcare professional in advance. Detailed analysis is as follows:
Fresh fennel has high water content, resulting in a relatively lower potassium concentration—about 200 to 250 mg per 100 g. It has a tender texture and is suitable for salads or light stir-frying, providing a moderate amount of potassium. Dried fennel, having undergone dehydration, has more concentrated nutrients and higher potassium levels, reaching 280 to 300 mg per 100 g. It is commonly used as a seasoning, and even small amounts can contribute a notable intake of potassium.
The potassium content in fennel may also vary depending on the variety and growing conditions. Fennel grown in fertile soil with adequate moisture tends to accumulate more potassium. Different varieties may show slight fluctuations in potassium content, but overall levels remain within the range mentioned above. Potassium plays an important role in maintaining electrolyte balance and supports heart and muscle function.
Individuals with potassium metabolism disorders should limit their consumption of fennel, especially dried fennel. Before consuming, it's advisable to understand your health status and adjust intake accordingly. For personalized dietary advice, consult a physician or registered dietitian.
