When to plant tomatoes in unheated greenhouse

Tomatoes are one of the most popular fruits to grow in an unheated greenhouse. However, planting tomatoes in the greenhouse at the right time is critical to ensure a successful harvest. In this article, we will discuss when to plant tomatoes in an unheated greenhouse.

Choosing the right tomato variety

Before planting tomatoes in an unheated greenhouse, it is important to choose the right variety. Look for tomato cultivars that are hardy and can tolerate cooler temperatures. Examples of such cultivars include Siberian, Stupice, Bloody Butcher, and Glacier. These varieties are ideal for unheated greenhouse growing.

Timing for planting tomatoes in an unheated greenhouse

The timing for planting tomatoes in an unheated greenhouse is critical. The best time to plant tomatoes in an unheated greenhouse is in early spring, around mid to late March. However, the exact planting time will depend on your location and the prevailing climate. In areas with mild winter and warm springs, you can plant tomatoes earlier, while in colder climates, you should wait until the weather warms up before planting.

Preparing the soil for planting

Before planting your tomato seedlings, you need to prepare the soil in your unheated greenhouse. Start by mixing organic matter such as compost or well-rotted manure into your soil. This will help improve soil structure and fertility, which is essential for healthy tomato growth. You should also add a slow-release fertilizer to provide the necessary nutrients for your plants.

Planting and caring for your tomato plants

After preparing your soil, it is time to plant your tomato seedlings in the greenhouse. Plant your seedlings at least two to three feet apart to allow for adequate air circulation and to prevent overcrowding. You should also provide support for your plants as they grow by using stakes or tomato cages.

Tomatoes in an unheated greenhouse require regular watering to thrive. However, be careful not to overwater your plants as this can lead to root rot. It is also important to monitor your tomato plants for pests and diseases, which can quickly spread in the warm and humid conditions of a greenhouse. You can control pests and diseases using organic pest control methods or by spraying your plants with appropriate fungicides and insecticides.

Harvesting your tomatoes

Tomatoes in an unheated greenhouse generally take longer to mature than those grown in a heated greenhouse. It can take up to 12 weeks for your tomatoes to ripen. You should harvest your tomatoes when they are fully ripe. This is important to ensure that you get the best flavor and nutritional value from your tomatoes. To harvest your tomatoes, carefully twist them off the vine or use a sharp knife to cut them off.

In conclusion, planting tomatoes in an unheated greenhouse requires careful planning and attention to detail. By choosing the right variety and planting at the right time, preparing your soil, and providing adequate support and care, you can enjoy a bountiful harvest of delicious and nutritious tomatoes.