Container gardening: Best time to transplant vegetables to ensure healthy growth

Container gardening: Best time to transplant vegetables to ensure healthy growth

Q. Last year I made a small attempt at growing mainly vegetables and a few flowers in containers. I still have questions: When is a good time to sow or transplant outside in containers? How cold is too cold? How do I prepare the soil for planting in containers still holding last year’s planting mix? In what sort of conditions should the containers be placed?