Growing degree days · base 50°F
Growing degree days in Cedar Rapids, IA
Season to date · since January 1
3,501GDD
Peak accumulated heat
The season has banked substantial heat. Warm-season grass is at its strongest; cool-season grass may be under heat stress and should not be pushed with nitrogen.
This week in Cedar Rapids
Cedar Rapids, IA added 119 growing degree days this past week, 17 a day, reaching 3,501 for the season. Its warmest day added 25.
| Day | Added | Season total |
|---|---|---|
| Tue | 14 | 3,396 |
| Wed | 16 | 3,411 |
| Thu | 11 | 3,422 |
| Fri | 16 | 3,438 |
| Sat | 21 | 3,459 |
| Sun | 18 | 3,476 |
| Mon | 25 | 3,501 |
PGR reapplication tracking
Plant growth regulator timing uses a Celsius-scale accumulation, not the seasonal Fahrenheit one. This page tracks a 10°C base, which is the Bermuda (warm-season) figure. Trinexapac-ethyl is typically re-sprayed near 200 GDD on cool-season turf and roughly 216 to 230 on warm-season turf, measured from your last application rather than from January. Always follow the product label.
Track GDD from your own spray date →Soil temperature right now in Cedar Rapids, IA
GDD is a trend indicator. Soil temperature is the signal that actually decides pre-emergent and seeding timing, and it is 65.7°F here at 2 inches.
Full soil report for 52401 →Nearby
Growing degree days near Cedar Rapids
- Des Moines, IA101 miles from Cedar Rapids · ZIP 50301
- Madison, WI137 miles from Cedar Rapids · ZIP 53701
- Peoria, IL139 miles from Cedar Rapids · ZIP 61601
- Rochester, MN149 miles from Cedar Rapids · ZIP 55901
- Naperville, IL181 miles from Cedar Rapids · ZIP 60540
- Springfield, IL183 miles from Cedar Rapids · ZIP 62701
Get this number every morning
This page recalculates when you load it. The app accumulates GDD for Cedar Rapids, IA daily and tells you when your PGR window opens. Free on iPhone and Android.