Coffee Grounds and Egg Shells for Roses

Coffee grounds are good for any plants in the garden as they contain a small amount of nitrogen. They also act like a mini compost for the soil. That is all it will do for the roses. They will not help in any way to make the rose bush bloom better. You simply scatter a little amount around the base of the rose and then have to water it in or it won't work.

Eggshells are a good source of calcium - wash them out well. Let the egg shells dry, break up/crumble, then apply around the base of the roses, and dig into the soil a little bit (or put them under mulch - eggshells are not very attractive). Eggshells are safe to apply all year long and will not hurt the rose, but only help them (roses need calcium too!).