how warm soil temp for planting tomatoes
Setting out plants Set tomatoes in the garden when the weather has warmed and soil temperatures are above 60 degrees F. Temperatures below 50 degrees F impair tomato growth. In southern Missouri, plant tomatoes outside from April 20 to May 15.et tomatoes in the garden when the weather has warmed and soil temperatures are above 60 degrees F. Temperatures below 50 degrees F impair tomato growth.