Quick answer: Plant tomato seeds indoors 3-4 weeks before your local last frost date. Transplant outdoors after the soil has warmed up, usually about 2-3 weeks after the final frost. Young tomato seedlings in small tray. Tomatoes are fast-growing plants.

Start seeds indoors 6-8 weeks before the last frost date in your region. Adjust timing based on whether you’ll grow tomatoes indoors or outdoors. 1. Sowing the Seeds Prepare Containers: Use seed trays, pots, or cell packs with drainage holes.

Embarking on the journey of starting tomato seeds indoors? We’ve got your back! Here’s a concise guide to help you navigate through the process: You’ll need a seed tray, potting mix, and of course, tomato seeds. Don’t forget to have a spray bottle handy for watering.