A proper fertilization schedule is key to maintaining a thick, healthy Minnesota lawn. Here's your complete guide to fertilizing throughout the year.
Understanding Fertilizer Numbers
Fertilizer labels show three numbers (e.g., 20-5-10) representing Nitrogen-Phosphorus-Potassium (N-P-K). Nitrogen promotes green growth, phosphorus supports roots, and potassium helps overall health.
Early Spring (April)
Apply a balanced fertilizer with pre-emergent weed control. This feeds emerging grass while preventing crabgrass. Use about 1 pound of nitrogen per 1,000 square feet.
Late Spring (May-June)
A second application supports active growth. Consider a slow-release formula that feeds gradually over 6-8 weeks.
Summer (July-August)
Go easy in summer heat. If you fertilize, use a light application. Too much nitrogen during hot weather can stress your lawn. Focus on watering properly instead.
Early Fall (September)
This is the most important fertilization of the year. Apply a high-nitrogen fertilizer to promote recovery from summer stress and encourage root development before winter.
Late Fall (October-November)
Apply a winterizer fertilizer high in potassium. This strengthens roots and helps your lawn survive winter, leading to earlier green-up in spring.
Tips for Success
• Water after fertilizing to activate the product
• Never fertilize drought-stressed grass
• Follow label directions—more is not better
• Keep fertilizer off sidewalks and driveways to prevent runoff
• Store products in a dry place
Professional Fertilization Programs
Our lawn care programs take the guesswork out of fertilization. We apply the right products at the right time, customized for Minnesota conditions.