how warm do containers keep plants?
I know that in comparison to growing stuff in the ground,
soil warms up faster in containers than in the ground.
My question is how much warmer is the soil temp and air temps in stuff being grown in containers compared to stuff being grown in the ground?
I know this depends mainly on what type of containers are being used; mine are made of plastic; for colors they are white, gray/silver, red, and blue.
The main reason I ask this is cause I want to do early direct sowing for cold weather stuff; they like cold weather, but cold temps (in 60's or below) will cause slow germination, which defeats the purpose of growing them at this time, which is to get an early harvest.
Would the soil temps and air temps in containers provide enough of a 'boost' in temps that it will result in faster germination?
I also wanted to know if in comparison to stuff being grown in the ground does stuff in containers grow faster and/or do you get an earlier harvest?