I never set veggies out before MedFair. We always get one bout of cold weather just before or just after, so I only grow what's perennial before the Faire.

But after - peas, beans, tomatoes, cucumbers, squashes, carrots, kohlrabis, broccoli, raab, cabbages, cauliflowers, rutabagas, celery, basils, dill, and more get planted out wherever there's space.