When do I put tomato plants in greenhouse?

Tomatoes are among the most popular vegetables grown in greenhouses. However, knowing when to start tomato plants in a greenhouse can be a bit tricky. Generally, tomato plants need a stable and warm environment to grow well, and the ideal time to start growing them depends on your climate and the growing conditions in your greenhouse. Here are some tips to help you decide when to put tomato plants in your greenhouse:

Choose the right time

The ideal time to start tomato seeds in a greenhouse is 4-6 weeks before the last frost date in your area. Tomato plants prefer warm temperatures around 70-80°F (21-27°C) during the day, and around 60°F (15°C) at night. If your greenhouse temperature falls below these levels, your plants may struggle to grow and develop properly. Therefore, it is important to choose a time when the temperature is stable, and frost danger is over.

Check soil temperature

Another important factor to consider when deciding the best time to put tomato plants in a greenhouse is soil temperature. The soil must be at least 50°F (10°C) before planting tomatoes. If you plant tomatoes in soil that is too cool, the seeds will not germinate, or the plants will grow slowly and be prone to pests and diseases.

Consider your greenhouse setup

When it comes to starting tomato plants in a greenhouse, the setup and the lighting are also essential. If you have solar-powered greenhouse lighting or heating, timing is especially critical. You need to keep a close eye on the weather forecast and adjust your greenhouse temperature accordingly. Consider adding hot water bottles, a heat mat, or a greenhouse heater to help regulate the temperature.

Bottom Line

Starting tomato plants in a greenhouse can be a great way to grow fresh and juicy tomatoes year-round, but timing is critical to ensure successful harvests. To ensure your greenhouse-grown tomato plants thrive, start them 4-6 weeks before the last frost date in your area, make sure soil temperature is 50°F (10°C) at a minimum, and consider greenhouse setup and lighting. Following these simple tips, you can grow healthy and delicious tomato plants in your greenhouse, no matter what climate you live in.