Here are is a list of crops that can still be planted mid to late August, we still have seed available.
60 Day Crops

Root crops Leaf crops

*turnips *swiss chard
*leek *collards
*early carrots *winter cauliflower
*kohlrabi *early cabbage
30 Day Crops
These crops take 30 days to mature and should be planted by mid September.
Root Crops Leaf Crops
* radishes *broccoli
*bunching onions *leaf lettuces
*spinach

Whichever type of vegetables you choose to plant, be sure to look at the directions on the seed pack. It is important to note planting times and days to maturity in relation to your frost dates. Hope these tips find you with a bountiful harvest!