When to Start Tomato Plants from Seeds

Tomatoes are a staple in many gardens and for good reason. They are easy to grow, versatile in the kitchen and produce bountiful harvests. If you want to start your own tomatoes from seeds, the timing is important for transplanting outdoors. Here are some tips on when to start tomato plants from seeds.

Climate and Growing Zone

The first thing to consider when deciding when to start your tomato seeds is your climate and growing zone. Tomatoes are warm-weather plants, and they grow best in temperatures between 70 and 80 degrees Fahrenheit. If you live in a cooler climate, you will want to start your seeds indoors. In warmer climates, you can start your seeds outdoors. Consult your local garden center or extension office for more information on your specific climate and growing zone.

Transplanting Outdoors

Once your seedlings have developed their first true leaves, they are ready to be transplanted outdoors. This usually takes about 6-8 weeks from the time of seed sowing. However, you want to make sure that the soil outside is warm enough for successful transplanting. The soil temperature should be at least 60 degrees Fahrenheit for best results. If the soil is too cold, your tomato plants may not thrive, and they may take longer to produce fruit.

Indoor Seed Starting

If you are starting your tomato seeds indoors, you will need to time it so that the plants are ready to be transplanted outdoors at the right time. Depending on your growing zone, this could be anywhere from mid-spring to early summer. To figure out the right time to start your seeds, count backward from your anticipated transplanting date by 6-8 weeks. This will give you the date to start your seeds indoors.

When starting your tomato seeds indoors, you will need to provide them with adequate warmth, light and moisture. Use a seed starting mix to plant your seeds and keep the soil moist. Once the seedlings emerge, you will need to provide them with plenty of light. Grow lights or a sunny window will work. Keep the light source 2-4 inches away from the seedlings for the best results.

Conclusion

The timing of when to start tomato plants from seeds is critical for successful transplanting and production of fruit. Consider your climate and growing zone when deciding when to start your seeds. If starting indoors, count backwards from the anticipated transplanting date by 6-8 weeks to determine the seed starting date. Whether grown indoors or outdoors, tomatoes need warmth, light and adequate moisture to thrive.