Fertilizing New Sod in Toronto: Fall Care for Kentucky Bluegrass Blend

A Toronto homeowner with 3-week-old sod (likely Kentucky bluegrass blend) seeks guidance on fall fertilization and addressing brown edge patches.

Fertilizer Selection

Apply a "Winter Care" fertilizer with slow-release nitrogen. Avoid starter fertilizers high in phosphorus—these are designed for seed germination, not established sod, and many Canadian municipalities restrict phosphorus fertilizers due to waterway algae concerns.

Addressing Brown Patches

Edge browning on new sod is common and typically indicates soil contact issues. Topdressing with quality soil/compost blend helps these areas fill in naturally and prevents future thatch buildup. Overseeding isn't necessary; the existing sod will spread into topdressed areas.

Canadian Lawn Care Context

Fall fertilization in Toronto should focus on root development and winter hardiness, not top growth. Slow-release nitrogen supports this perfectly. The cooler climate and potential phosphorus restrictions make product selection particularly important.

—C.J. Brown, TheLawnCoach.com