According to this gardening video (What Vegetables Can I Still Plant in August? IN ANY CLIMATE), there's still time (60 days before first frost) to grow these FROM SEED:

  • Cucumbers (maybe use trellis to save space)
  • Bush and pole beans (use teepee/sticks to save space)
  • Dill
  • Zucchini and yellow squash
  • Swiss chard
  • Tomatoes (certain ones like Juliet, Early Girl or Subarctic)