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Garden planners can calculate seed sowing and planting dates in seconds with the handy Microsoft Excel-based Lazy Gardener's Automatic Seed-Starting Chart. (Not that we're calling you lazy-let's say time-crunched.)

Download the seed-starting chart file at You Grow Girl, enter the frost-free date for your region (refer to Almanac.com for the down-low), and the spreadsheet will magically calculate all sowing and planting dates in the appropriate fields.

Print your chart for hanging near your seed-starting base of operations, or tape it into your gardening journal. Finally, technology is good for something. ::You Grow Girl

Difficulty level: Easy