I work in hot, humid Virginia and have found long-sleeved, moisture-wicking, SPF 50 Tshirts ('dive' or 'scuba' shirts) are life-savers. It seems counter-intuitive to use long sleeves, but not having the sun beating directly on my skin helps a lot. These shirts wear like iron, however they stain super easily, so I bought some fabric crayons to turn the stains into 'art'. Secondly, I discovered nurses' scrubs at the thrift store. These have drawstring waistbands, important because a) like many of you I can't buy anything that will fit my waist and hips, and b) cinch them up tight to keep ticks and stinging ants out. They have wonderful deep pockets including cargo pockets, so I don't have to wear a tool belt for smaller stuff like work gloves, pruners, screwdrivers, etc. (having a drawstring waistband is also helpful if you load up your pockets with pounds of stuff.) The fabric is medium-weight, so it is easy to stuff the legs into my socks (against ticks, stinging ants, chiggers, etc.) I've only been using the scrubs for about a year now, so cannot attest to longevity, but man are they comfortable!