Has any body used Espoma's "Holly~tone for acid loving plants" ? My plants are in desperate need for calcium, I mistakenly thought that bone mill was a calcium supplement 2 weeks ago. I am going to toast crushed egg shells until black and soak in vinegar for 2 weeks but want something right away. I went to the local DYS store and asked for dolomite lime and this is what they gave me. Have any of you tried this?