Editing your closet seasonally is a great way to regularly cull your wardrobe. This is the time to take a look at what you didn't wear and figure out what items you are missing. Take advantage of end-of-season sales to fill in any gaps in your wardrobe.
Flickr photo by closet factory
When storing out-of-season clothing, remember to clean it before you pack it away. Pests are attracted to clothing stained with food, drink, and/or sweat. Also make sure that clothing is completely dry before it is stored. Any moisture will create a mildew- and mold-friendly environment. In humid climates, add a silica gel packet to absorb moisture. Fold clothes with white acid-free tissue storage paper to prevent wrinkling and store in airtight plastic storage containers with cedar or lavender sachets. Label boxes and store them under the bed or on a high shelf in the closet. Don't pack clothes in too tightly -- allow them room to breathe.
For more cleaning tips, check out What's A Disorganized Person To Do?