When should I sow tomato seeds indoors?

Question:

When should I sow tomato seeds indoors?

Answer:

Tomato seedlings grow rather quickly.  Ideal transplants are short, stocky plants.  Sow tomato seeds indoors 5 to 6 weeks before the intended outdoor planting date.  Plant seedlings in the garden after the danger of frost is past.  Gardeners in southern Iowa can plant tomatoes outdoors in late April, while those in northern counties should wait until mid-May.   

Learn more in this publication: Tomatoes
Learn more in this article: Growing Tomatoes in the Home Garden.