Several common fruits provide meaningful amounts of vitamin K, with blueberries, kiwifruit, and blackberries ranking among the richest sources. Most fruits contain moderate rather than high levels of this nutrient compared to leafy greens, but certain picks can still contribute a significant share of your daily needs. The daily value for vitamin K is 120 mcg for adults.
Why Vitamin K in Fruit Matters
Vitamin K plays a central role in blood clotting. It activates the proteins your body needs to form clots and stop bleeding. It also supports bone health by helping direct calcium into your bones rather than your arteries. The form found in fruits and other plant foods is K1 (phylloquinone), which is the same form abundant in leafy greens like kale and spinach. Fruits won’t match those greens on a per-serving basis, but they add variety and make it easier to reach your daily target through whole foods.
Women 19 and older need about 90 mcg per day, while men in the same age range need 120 mcg. These are adequate intake levels set by the Food and Nutrition Board, since there wasn’t enough data to establish a firm requirement. Most people hit these numbers without trying, but knowing which fruits are richer in vitamin K helps if you’re aiming to boost your intake or, on the flip side, need to keep it consistent because you take a blood thinner.
Fruits With the Most Vitamin K
Blueberries
Blueberries sit at the top of the fruit vitamin K list. A cup of wild blueberries provides about 47 mcg, which covers roughly 39% of the daily value. Even frozen sweetened blueberries deliver around 41 mcg per cup. Fresh conventional blueberries fall slightly lower but remain one of the best fruit sources available. Wild varieties tend to have more because they’re smaller and denser, packing more skin (where much of the vitamin K concentrates) into each cup.
Kiwifruit
A single medium kiwi contains about 31 mcg of vitamin K, around 25% of the daily value. That’s impressive for a fruit weighing only about 75 grams. Kiwifruits are also loaded with vitamin C, so you get a strong nutrient return for a relatively small snack. Two kiwis at breakfast would put you past half your daily vitamin K target before you eat anything else.
Blackberries
Blackberries are another berry with notable vitamin K content. A cup of frozen unsweetened blackberries has about 30 mcg, and blackberry juice comes in slightly higher at 38 mcg per cup. Fresh blackberries fall in a similar range. Like blueberries, blackberries carry their vitamin K primarily in the skin, so the whole fruit is always a better source than juice that’s been strained.
Prunes
Dried plums (prunes) deserve special attention because drying concentrates nutrients dramatically. A single prune contains less than 6 mcg, which sounds modest, but a full cup of pitted prunes jumps to 104 mcg, nearly the entire daily value. That’s a huge difference from prune juice, which provides just under 9 mcg per cup since much of the vitamin K stays in the fruit’s flesh and skin during juicing. If you snack on prunes regularly, they can be a surprisingly significant source.
Other Notable Fruits
Beyond the top performers, several other fruits contribute smaller but meaningful amounts of vitamin K:
- Grapes: particularly dark varieties, provide moderate vitamin K and carry it into red wine as well.
- Pears and figs: offer a few mcg per serving, adding up if you eat them frequently.
- Avocados: technically a fruit, half an avocado provides roughly 14 mcg of vitamin K.
Common fruits like bananas, apples, and oranges contain very little vitamin K, typically under 5 mcg per serving. They’re fine additions to your diet for other reasons, but they won’t move the needle on this particular nutrient.
Fresh, Frozen, and Dried: How Form Affects Content
The way a fruit is processed changes its vitamin K density. Drying removes water and concentrates everything that remains, which is why a cup of prunes has over 100 mcg while a cup of prune juice barely reaches 9 mcg. Freezing preserves vitamin K well, with frozen blueberries and blackberries retaining levels very close to their fresh counterparts. Juicing, on the other hand, tends to reduce vitamin K because the nutrient is bound to fiber and skin that often gets filtered out.
If maximizing vitamin K is your goal, choose whole fruits over juices and consider dried fruit as a concentrated option. Just be mindful that dried fruits also concentrate sugar and calories alongside the vitamins.
Vitamin K, Blood Thinners, and Consistency
If you take warfarin or a similar blood-thinning medication, vitamin K matters for a different reason. Warfarin works by blocking vitamin K’s role in clotting, so large swings in your vitamin K intake can make the medication less predictable. This doesn’t mean you need to avoid fruits with vitamin K. The key is consistency: eat roughly the same amount from week to week so your dose stays calibrated.
Most fruits are low enough in vitamin K that they’re unlikely to cause problems. The ones worth paying attention to are prunes in large quantities, blueberries by the cupful, and kiwifruit eaten daily. None of these need to be eliminated. You just want to avoid going from zero servings one week to several cups the next. A steady pattern gives your care team a stable baseline to work with.
How Fruits Compare to Other Vitamin K Sources
For perspective, fruits are a moderate source at best. A single cup of raw spinach contains about 145 mcg of vitamin K, exceeding the entire daily value. A cup of cooked broccoli provides around 220 mcg. Compared to those numbers, even the richest fruit sources look modest. But fruits fill a different role in your diet. They’re convenient, require no cooking, and pair easily with meals and snacks throughout the day.
A practical strategy is to rely on a serving or two of leafy greens to anchor your vitamin K intake, then let fruits like blueberries, kiwi, and blackberries fill in the gaps. A morning smoothie with a cup of blueberries and a kiwi delivers roughly 78 mcg of vitamin K, over 60% of the daily value, before you’ve touched a vegetable.