Like most of the finer things in life, sweet, sweet herb only gets better with age and proper storage. Weed will continue to cure for up to 6 months if stored properly. Taste, look, feel, and potency all continue to improve. After about 6 months or so all that can improve will have and you should think about vacuum packing and freezing your nugs. That way you can store them practically forever. Remember, low temps, low humidity, and low light are the key. Heat and light break down thc, and humidity will cause mold. As long as you store your bud in a cool, dark, dry place it should cure and last a long time.
Happy Puffing!