Zucchini & squash blossom risotto

3 tbsp olive oil 1 onion, finely chopped ½ garlic clove 2 sprigs thyme 1 zucchini 10 squash blossoms 150 g arborio rice 30 ml dry white wine + 5ml to finish 700 ml vegetable broth 70 g butter 70 g parmesan 1 tbsp parsley, finely chopped Salt Pepper