2 Replies to “Cool Season Grass Soil Temperature Chart”

  1. What is the maximum lethal soil temperature when sowing tall fescue. I am in Australia where soil temps can exceed 30-35C.

    1. Hello, I did some research and found that the maximum high lethal temperature for cool season turf grasses is 40C to 44C (104F to 112F) and low-temperature kill is around -3C t0 -29C (26F to -20F). There are a lot of other factors like root, shoot, heat & chill stresses to consider with different temperatures. Click here for more information. I hope this was helpful.

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