If you're going to grow anything you may end up being annoyed and/or plagued by weather, insects, and disease. Anything that Mother Nature can dish out, basically. While you may be at the mercy of the weather, pest and diseases can be fought. However, this proves especially problematic for the organic gardener, that doesn't want their plants and edibles covered in pesticides.

I may have just stumbled across a solution! I will be trying this in my garden this year, should need arise.

Not only does it meet the requirements for the USDA's National Organic Program (NOP), but it has been tested by over 350 members of the National Home Gardening Club, and gave it a 90% approval rating! Proven effective in 200 university trials and 12 years in agriculture.

GreenCure treats 25 types of plants diseases and is recommended for use on over 150 different flowers, trees, fruits, vegetables, and turfs. It can be used in organic vegetable production and even indoors. (via http://www.altgarden.com)