Tailor your spring fertilizer to what you are planting in Ohio. For tomatoes, use a 5-10-10, 5-20-20 or 8-16-16 ratio of nitrogen, phosphorus and potassium, the Ohio State University Extension recommends. For roses, test the soil to see if the pH is above 6.5; Ohio soils often need iron sulfate to address deficiencies in iron for higher pH soils.
About this Author
Rogue Parrish has written two travel books and edited at the "The Baltimore Sun," "The Washington Post" and the Alaska Newspapers company. She began writing professionally in 1975. Parrish holds a summa cum laude Bachelor of Science degree in journalism from the University of Maryland.