Fertilizing a Mature Shade Lawn: Adjusting the Program After 3 Years

Established lawns need a consistent, season-appropriate fertilizer program. Here's how to maintain a 3-year-old hydroseeded shade lawn.

Current Program Is Fine

Continue with 24-4-8 (or similar high-nitrogen, moderate-potassium formula). Apply primarily in fall, optionally in spring. Never fertilize in hot summer months.

Optional Enhancement

Once per year, substitute a high-potassium formula (e.g., 29-3-14, 20-5-15) in late spring or late fall to boost stress tolerance and root health.

Core Principles

• Fall-focused feeding for cool-season grasses.
• Summer dormancy—no fertilizer.
• Consistency beats intensity.