This year, I grew 5 Cherokee Purple tomato plants in my garden. I was getting frustrated because those were the only ones that hadn't really taken off yet and some even had the end blossom rot. When I started to do a little research, I learned that this meant that was a calcium deficiency in the soil and that I should either use epson salt or eggshells by the base of each plant. Within one week, I had tomatoes blooming like crazy! This is definitely my go-to trick for tomatoes. No more rotten tomatoes for me!