 Other things that I like to think about would be spinach, chard, and lettuce. So leafy green vegetables are a great choice for late summer planting because even if they don't fully mature, the young leaves can be harvested before a hard freeze. Green beans and peas are possible, but remember that green beans are going to be a little bit more susceptible to frost. Peas, they take around 50 to 60 days to mature and are a little bit more frost tolerant than your beans would be.