Whether you’re at the local farmer’s market or your favorite grocery store, the rules for how to pick the best acorn squash are the same. Look for squash that have a deep, green color with a little bit of orange mixed in. If a green squash has turned mostly orange, that means it’s been stored too long. Just like green peppers that turn red and orange as they age, acorn squash turn from green to orange as they ripen.
A good squash should feel heavy when you lift it. It should be firm to the touch and free of any soft spots. If you can, find one with the stem still attached. The longer the stem, the longer they will last if stored. Most squash will keep well in a cool place in your kitchen for 2 to 3 weeks.