These are the grass types that grow in USDA hardiness zone 4. Pick yours for a month-by-month calendar tuned to this zone’s climate.
The typical dates our alert engine would have texted each lawn, replayed with today's rules on archived weather from 2019 to 2025. Each range runs from the earliest to the latest of the cities listed above its table. Simulated dates, not texts we sent or observed emergence.
Cities: Fargo, ND; Duluth, MN; Bismarck, ND; Eau Claire, WI
| Grass | Spring pre-emergent | First feeding | Fall pre-emergent |
|---|---|---|---|
| Kentucky Bluegrass | Apr 27 to Jun 1 | May 15 | Not sent |
| Tall Fescue | Apr 27 to Jun 1 | May 15 | Not sent |
| Fine Fescue | Apr 27 to Jun 1 | Aug 15 to Aug 18 | Not sent |
| Perennial Ryegrass | Apr 27 to Jun 1 | May 15 | Not sent |