Good timing is critical for starting seeds indoors. To ensure you begin starting seeds at the proper time, determine the last frost date in your area (contact your cooperative extension office for this date). Then read each seed packet to learn how many weeks before the last frost date the seeds should be sown and when they should be planted outside. Using a calendar, calculate when you'll need to sow seeds so the plants are ready for transplanting outdoors.
For example, 'Brandywine' tomato should be started indoors 4-6 weeks before the last frost and planted out a week after the last frost. If the last frost date in your area is May 1, start 'Brandywine' around March 15 and plant out on May 7.
Use our Seed Starting Worksheet to schedule all your seed starting.