Hutchinson, Kansas / Winter Wheat

Total GDD: 2519 (Feb 26)

Day 149 / 273 (55%)

Total GDD: 2519 (Feb 26)

Method: 32°F

7-Day Daily Avg: 11.1

7-Day Projection: 2596 by Mar 05

Season: Oct 01, 25 - Jun 30, 2026

Last Freeze:
10%: 03-31
50%: 04-15
90%: 04-27

First Freeze:
10%: 10-09
50%: 10-20
90%: 11-03

Growing Degree Days (GDD) track heat accumulation to predict when plants reach growth stages, pests emerge, and diseases become active.

Thresholds mark specific GDD values when events typically occur, with crossing dates showing when your season reaches each milestone.

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Fall Emergence 150 °D

Oct 4, 2025 | Oct 5, 2024 | Oct 4, 2023 | Oct 5, 2022

Growth Stage

Coleoptile emergence. Assess plant density and tillering potential. Scout for Hessian fly.

Fall Tillering 500 °D

Oct 13, 2025 | Oct 14, 2024 | Oct 16, 2023 | Oct 16, 2022

Growth Stage

Active fall tillering. Assess tiller density. Apply fall nitrogen if needed.

Spring Greenup 2100 °D

Jan 23, 2026 | Feb 25, 2025 | Feb 21, 2024 | Mar 5, 2023

Growth Stage

Dormancy break. Growth resumes. Begin spring growth monitoring.

Jointing 2750 °D

Mar 29, 2025 | Mar 30, 2024 | Apr 12, 2023

Growth Stage

First node visible. Rapid stem elongation. Critical nitrogen timing.

Heading 3400 °D

Apr 25, 2025 | Apr 24, 2024 | May 7, 2023

Growth Stage

Critical pollination window begins. Ensure adequate soil moisture. Monitor for European corn borer.

Maturity 4500 °D

May 30, 2025 | May 26, 2024 | Jun 5, 2023

Growth Stage

Physiological maturity. Hard dough. Monitor harvest moisture and weather.