When pea flowers are left alone what do they do?

When pea flowers are left alone, they typically undergo self-pollination, where the pollen from the same flower fertilizes its ovules. This process allows for the production of seeds without the need for external pollinators. Additionally, if conditions are favorable, the flowers may eventually wilt and drop off, leading to seed development in the pods. Overall, left to their own devices, pea flowers efficiently reproduce and contribute to the plant's lifecycle.