When you’re grilling veggies it’s good to stay close to the grill. Every grill has spots that are hotter than others so vegetables in one area of the grate will be done before others. And, of course, different vegetables will take different amounts of time to cook. Stay close so you can flip veggies over and pull them off the grill as they are ready.
Asparagus, green beans, eggplant, bell peppers, tomatoes, onions, corn, mushrooms, zucchini or any of the summer squash varieties all do well on the grill.