Their web site says it is 18-18-21.
“18-18-21”
You’ll have really terrific looking tomato plants, LOL! There are a hundred variables in growing tomatoes. Soil. Weather. Actual RAIN, versus water from the hose. Tomato variety. The alignment of the stars, LOL!
I plant a lot of tomato plants and just let it go at that. If some fail, get diseased or are eaten by a groundhog, I’ll still have plenty.
Just buy a 20-20-20 fertilizer for half the price and get on with your life.
I feed my tomatoes Kelp or Compost Tea. They do just fine. Besides, a plant does not know the chemical make-up of what you’re feeding it. Artificial or organic is no matter to a ‘mater. ;)