Calgary's growing season is short — roughly May through October — so timing matters more than quantity. A steady program of four granular feedings beats one heavy dump that burns the lawn in July heat.
The calendar
- Late May (spring wake-up): balanced starter feed as the lawn greens up and mowing begins.
- Late June: slow-release nitrogen to push density before the heat.
- Late August: recovery feeding after summer stress and foot traffic.
- Early October (winterizer): potassium-heavy feed so roots store energy over winter.
Two rules that matter here
First, water after feeding — Calgary's dry air plus chinook winds dry granules fast. Second, mow high (around 3 inches) through July; taller grass shades roots and needs less water.
Lawn fertilizer is available as an extra on our lawn visits — one slow-release application per visit, timed to this calendar.