How to grow vegetables such as tomatoes indoors?
as suggested it is not possible to grow tomatoes in your shed, otherwise we would not need greenhouses. the only way is to install grow lights , but i think the cost would be too high. You can grow herbs on a warm windowsill, also chillies can be grown on a windowsill. if you were really keen you might be able to grow lettuce in a indoor window box. Visit your local garden centre or look on the Internet for perennial herb plants like sage or thyme. Remember to check the variety of the herb and the size to which it will grow. Most plants will have a label telling you if they’re suitable for a container, such as a window-box. If you look carefully, you may even be able to find some seeds that can still be planted. Lemon coriander, for example, has a long planting season. Alternatively pop in some garlic bulbs and grow your own ready for next summer. When you’re ready to start planting, first make sure the window-box is clean. There are disinfectant washes you can use to ensure there are