One way the garden industry goofed was making spring appear to be the only time for planting. Many plants can be planted in the fall, as well, some even prefer a fall planting.
In many areas you can plant trees, shrubs, and perennials until late into the fall, as long as the ground hasn’t frozen. There are even some vegetables that when sown in mid- to late-summer will give you a whole second crop of fresh produce through the fall months.
Some of this depends on your climate, check with your Ag Extension, as mentioned earlier, for information. For instance, in many areas of the south planting grass seed in the fall is preferred over the spring, because the weather gets too hot for the young grass during the summer. It just withers and dies.