Nothing beats vine-ripened tomatoes or tender, freshly picked lettuce. But Colorado gardening can be challenging. In my neighborhood (probably yours, too), the bunnies and the clay soil are the primary troublemakers.
We addressed both by building an elevated, fenced-in plot. This keeps out the critters and provides a nice base to build on. Clay holds on to nutrients and water but requires the addition of organic matter (manure is a good choice) to improve the texture. We turn it over every spring and add another layer of good soil. Your soil — and your crops — will improve over time!