How deep are these recommended soil temperatures for? I guess the depth at which the seed is planted? And is it the soil temperature at night or during the day?
It's still pretty cold here in Southern Ontario. Last night the ground froze to a depth of about 3/4 inch but it thawed in the afternoon with temps reaching the high 30s. Temps are supposed to drop to the low-mid 20s tonight though so I expect the upper layer of soil will freeze again.
After that, the forecast calls for milder weather, around 50F during the day and 35-40F at night, but we'll probably be getting several light freezes and maybe one or two severe (ex 25F) freezes. There wouldn't be any snow to insulate as snow is pretty rare here in April, the cold snaps are usually precipitation free.
How deep are these recommended soil temperatures for? I guess the depth at which the seed is planted? And is it the soil temperature at night or during the day?
It's still pretty cold here in Southern Ontario. Last night the ground froze to a depth of about 3/4 inch but it thawed in the afternoon with temps reaching the high 30s. Temps are supposed to drop to the low-mid 20s tonight though so I expect the upper layer of soil will freeze again.
After that, the forecast calls for milder weather, around 50F during the day and 35-40F at night, but we'll probably be getting several light freezes and maybe one or two severe (ex 25F) freezes. There wouldn't be any snow to insulate as snow is pretty rare here in April, the cold snaps are usually precipitation free.