The great outdoors is a wonderful place to be - but it's not wonderful for yard tools. Without protection from the rain, yard tools, including lawn mowers, will eventually show the wear and tear of being kept outside.
First, what is community supported agriculture? The simplest way to explain this might be to consider CSA as 'subscription farming'. In other words, a group of people agree to pay the gardener for a season's worth of fresh produce, often paying in advance for the season.