Salt Lake City soils are notoriously clay-heavy, which means poor drainage, compacted roots, and patchy lawn growth. The good news? Compost is the secret weapon that can transform stubborn Utah soil into a thriving foundation for lawns and gardens. Here’s why compost works—and how you can fix clay soil for good.
Why Utah’s Clay Soil Causes Lawn Problems
- Clay soil compacts easily, suffocating roots.
- Water sits on the surface instead of soaking in.
- Lawns turn yellow, thin, and stressed during heatwaves.
Compost—The Natural Soil Conditioner
- Compost adds organic matter that breaks up dense clay.
- Improves drainage and air flow to plant roots.
- Provides slow-release nutrients for healthier growth.
How to Fix Clay Soil with Compost in Salt Lake City
- Aerate the Lawn: Punch small holes to relieve compaction.
- Top Dress with Compost: Spread ¼ to ½ inch of compost across the lawn.
- Water Thoroughly: Helps organic matter penetrate soil.
- Repeat Annually: Builds long-term soil structure and fertility.
Bonus Tip—Mixing Compost with Mulch
- Use compost under mulch layers in garden beds for double benefits.
- Compost feeds the soil, mulch protects moisture.

FAQ
Q: How much compost should I add to my lawn?
A: For top dressing, use ¼–½ inch. For garden beds, mix in 2–3 inches before planting.
Q: Can compost fix drainage issues in clay soil?
A: Yes! Organic matter improves soil structure, allowing water to drain instead of pooling.
Q: How often should I add compost?
A: Once a year for lawns; every 1–2 years for garden beds.