Start Your Tomato Seeds Right

March 23, 2026

Tomato season starts long before the first fruit hits your stand. Most North American growers get seeds going six to eight weeks before the last frost, and a few smart moves at this stage can make the difference between a tray of leggy seedlings and a market-worthy crop.

Our guide covers five expert tips for starting tomato seeds, from picking the right variety to nailing moisture levels and knowing when to up-pot.

Ready to get growing? Stock up on seed starting supplies and open-pollinated tomato varieties from our partners at Botanical Interests with 20% off your cart using code MODFARM.

Happy Growing!

The Modern Farmer Team

Tomatoes are the premier summer veggie, and the number of varieties available is a testament to their beloved nature. Here are a few extra tricks you can use to start tomato seeds so you can have tons for eating, canning, and bringing to market.