How to Install Sod in Kelowna: From Soil Prep to First Mow

How Do You Properly Prepare the Soil?

Soil preparation is the most critical phase of sod installation, and the most commonly skipped or rushed. In Kelowna, you're typically working with alkaline soil (pH 7.5–8.5) that may be sandy, gravelly, or compacted. Start by killing or removing all existing vegetation. If there's existing turf, it needs to be killed with a non-selective herbicide or physically removed with a sod cutter, leaving dead grass under new sod creates a layer that prevents rooting. Once existing vegetation is gone, till the soil to a depth of 10–15 cm. Add 5–8 cm of quality topsoil or compost and till it in. This organic matter is especially important in Okanagan soils, which are often low in organic content. Grade the surface so it slopes away from your house foundation (a 2% slope is standard) and is smooth but not compacted. The goal is a firm, flat, well-drained surface with good-quality topsoil in the top 10 cm.

What's the Correct Way to Lay Sod?

Start laying sod along a straight edge, a sidewalk, driveway, or fence line. Lay rolls in a brick-pattern offset (stagger the seams so they don't line up in rows). Butt sod pieces tightly together, no gaps, no overlaps. Gaps dry out and create dead seams; overlaps create humps that look terrible and don't root properly. On slopes, lay sod perpendicular to the slope direction (horizontal bands) so gravity doesn't pull pieces down the hill. For curves, cut sod with a utility knife or half-moon edger after the main installation is complete. Once all sod is laid, use a lawn roller filled with water to press the sod firmly into contact with the soil beneath, good contact between the sod's root layer and your prepared soil is essential for rooting. Finally, water immediately and thoroughly, the soil beneath the sod should be wet to a depth of 10–15 cm after the first watering.

How Much Water Does New Sod Need in Kelowna?

New sod in Kelowna needs significantly more water than established turf. For the first two weeks, water once or twice daily, mornings and early afternoon are ideal. The goal is to keep the top 3–5 cm of soil beneath the sod consistently moist, but not waterlogged. If you lift a corner of the sod and the soil beneath is dry, you're underwatering. If there's standing water or the ground is squishy, back off. In Kelowna's summer heat (35°C+), inadequate water in the first two weeks is the most common cause of sod failure. Note that Kelowna water restrictions may affect when you can run automated irrigation, check the current stage and adjust as needed. Hand watering is generally permitted under any restriction stage and can supplement automated irrigation on non-permitted days if needed.

When Can You First Mow, and What Happens Next?

The first mow happens when two conditions are met: the grass has grown to about 8–10 cm, and the sod has rooted firmly enough that you can't easily pull a corner up. This typically happens 14–18 days after installation under proper watering conditions. Set the mower blade high, 6–7 cm, and make sure the blade is sharp. A dull blade tears grass rather than cutting it, and torn grass is more susceptible to disease and drought stress. After the first mow, transition your watering schedule: instead of light daily watering, shift to less frequent but deeper watering. Water deeply every two to three days (within restriction limits) rather than shallowly every day. This encourages roots to grow downward, making the lawn more drought-tolerant long-term. Apply your first light fertilizer about four to six weeks after installation.