This Oct. 10 picture shows grain sorghum heads at different stages that have been exposed to modest freeze injury. In this field, significant undamaged leaf area remains in the lower 2/3 of the canopy suggesting the conditions did not represent a hard freeze in spite of the appearance of the top leaves. . Grain sorghum heads at different stages that have been exposed to modest freeze injury as the leaf sheaths are also frosted/frozen. In this field, significant undamaged leaf area remains in the lower 2/3 of the canopy suggesting the conditions did not represent a hard freeze in spite of the appearance of the top leaves. Texas A&M AgriLife Extension Service agronomist Dr. Calvin Trostle said fields should be observed for the presence of stalks that are frozen above the canopy, which would indicate no further seed maturation. (Texas A&M AgriLIfe Extension Service photo by Dr. Calvin Trostle)

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