Sassafras Tree

Height: 30.00 to 60.00 feet
Spread: 25.00 to 40.00 feet

https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=i820

fertilizer

Nitrogen helps shoots (above ground)
Phosphorus helps roots (below ground)
Potassium is used by the whole plant (like a vitamin).

general rule: don’t fertilize in summer