Fruits are generally not major sources of vitamin K; leafy greens are far richer in K1. Some fruits (e.g., avocado) can contribute small to moderate amounts. If your goal is to increase vitamin K intake, focusing on greens and certain fermented foods is typically more effective. Fruits remain valuable for fiber, vitamin C, and phytochemicals. For people on warfarin, the key is consistency of vitamin K intake rather than avoidance.