New seedlings 19 degrees
I reused the left over sprouts from last week. And I tested the ryegrass in the cup that was healthy, and about 2 inches tall...by placing it in a mild freezer at 19 degrees for 24 hours. The grass was injured. Most of the time it collapsed and bent over at a point about a half inch above the soil surface. I am assuming this was the delicate area of most rapid growth. And yes, the soil froze hard. I am not sure if a more gradual onset of cold would have allowed the new grass to adapt to the cold. Clearly a sudden cold snap to 19 degrees is detrimental.
Last edited by RigglePLC; 01-13-2013 at 10:54 PM.