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Crop Heat Units (CHUs) Corn 2025

Location Crop Heat Units as of May 1st 2025 CHU accumulation last year 
Harrow           705                                 888
Ridgetown           646                                                                          837
London           632
                		823
Sarnia           551                                                            667

Updated June 13, 2025 

Corn growth stage in our area ranges from VE to V7 

Growing Degree Days Winter Wheat Development January 2025 and forward

Location Growing Degree Day accumulation as of January  1st 2025 GDD accumulation last year 
Harrow 1099 1299
Ridgetown 1007 1125
London 956 1169
Sarnia 1000 1108


 Updated June 13 2025

Flowering is completed,  grain fill has started. Takes 660 GDD to complete  grain fill. Length of grain fill depends on daily GDD. . 

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