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When Should I Fertilize My Lawn in Utah?

Lawn Care2 min read
Janae Moss
Janae Moss
Content Writer

Fertilize your Utah lawn 3-4 times per year for optimal health: apply a crabgrass preventer with fertilizer in mid-April, a nitrogen-rich fertilizer in early June, a fall lawn food in early September, and a winterizer in early November (optional). Kentucky bluegrass lawns need more nitrogen than tall fescue lawns. Always water after fertilizing to carry nutrients to the root zone and prevent burn.

The 4-Feed Utah Schedule

Feed #1 — Mid-April: Fertilizer with crabgrass preventer (pre-emergent). Use 20-0-5 or similar with dithiopyr or prodiamine.

Feed #2 — Early June: Balanced slow-release nitrogen fertilizer (18-5-12 or 20-10-10). Water deeply after.

Feed #3 — Early September: High-nitrogen fall lawn food (24-0-12). Most important fertilization of the year.

Feed #4 — Early November (optional): Low-nitrogen, high-potassium winterizer (5-10-20). Skip if lawn goes dormant early.

Fertilizer Types for Utah

Slow-release granular: Best for Utah. Feeds 6-8 weeks. Less burn risk.

Quick-release granular: Fast green-up but burns easily. Only below 85°F.

Organic: Improves soil health. Lower nitrogen, apply more often.

Liquid: Fast absorption, short-lived (2-3 weeks). Good for quick boosts.

How Much to Apply

Kentucky bluegrass: 4-5 lbs nitrogen per 1,000 sq ft per year. Tall fescue: 3-4 lbs. Mixed: 3.5-4.5 lbs.

Utah Tips

Use fertilizers with chelated iron for Utah's alkaline soil. Water within 24 hours. Don't fertilize dormant lawns. Soil test every 2-3 years through USU Extension.

See our Spring Lawn Care Tips, lawn aeration guide, and mulching benefits guide.

Frequently Asked Questions

Can I fertilize in summer?
Yes, use slow-release and water immediately. Avoid over 90°F.

What's the best fertilizer for Utah?
Slow-release granular with 3-1-2 or 4-1-2 ratio plus chelated iron.

Should I fertilize before or after mowing?
After mowing. Water after application.

Can I use weed-and-feed?
Apply fertilizer and weed control separately for best timing.

For professional lawn care, contact TruCo Services.