Sod vs. Seed for Chicago Lawns: Cost, Root Depth, and Germination Blanket Value

Cost & Performance

Sod is ~10× the cost of seed but provides instant coverage. Root depth depends on genetics, watering, mowing height, and fertilization—not solely on establishment method.

Recommended Seed Mix for Chicago

Local nursery blend: 1–3 Kentucky bluegrass cultivars + perennial ryegrass. Match to sun/shade conditions. Label lists components.

Establishment Steps (Seed)

1. Scratch soil surface.
2. Apply starter fertilizer.
3. Apply pelletized lime (target pH ~6.5).
4. Spread seed.
5. Roll lightly for soil contact.
6. Keep moist 2–3 weeks (no dry spots) until 3-inch mowing height.
7. Water early; avoid evening moisture to prevent fungus.

Germination Blankets

Priced between seed and sod. Accelerate germination but add cost. Choose based on budget and labor preference.