Buy the 2015 Old Farmer's Almanac!
Reporting
adding calciumI have a book that says take eggs shells (cleaned)break up and put into soil around tomatoes. Another suggestion was to put eggshells in a water bottle or can and let set overnight and then use water on certain plants. I've tried the egg shells in the soil when planting. But not sure if helps yet; will see.

Shop Wind Bells in the Almanac General Store