Zucchini (courgettes), cauliflower, mushrooms, peas, peppers, sweetcorn, swede and tomatoes are all low in Vitamin K.
It has a very low content of vitamin k, so it is perfectly safe to eat them if you are with anticoagulant´s treatment. According to the Agricultural Department 1 cup = 7.6 mcp.
I can't locate anything that indicates zucchini as a source of vitakim K. Good sources of the vitamin include Brussels sprouts, cabbage, cauliflower, kale, spinach and soybeans. Also--cooked dark green vegetables, such as spinach, kale and broccoli, can provide more than one RDA in a single serving. Cow milk is also a good source of the vitamin. Asian soy foods also are excellent vitamin K sources.