Did you know there are more than 70 million green thumbs in the United States? With the summer season coming to an end, you can still reap the benefits of growing your own produce well into the fall months -- it's not too late to start! In the northeast, vegetables like broccoli, cauliflower, peas, spinach and other hearty greens can be planted right now and harvested well into October. In warmer climates, you can garden into the early winter months. The trick to making this work is to plant your vegetable seeds deeper than you normally would. It insulates them and protects them from colder temperatures in the morning and at night.