When they start to develop a set of proper tomato leaves, carefully transplant the seedlings individually to 9cm pots and grow on in good light at around 16-18°C. Planting. Plants hanging and trailing from pots make a wonderful addition to the home or office environment. Although I would LOVE to grow my black krim cherry tomato inside all winter, it’s not a good idea. Although I have never tried this way, lots of people got successful ripening tomatoes indoor by hanging the plant upside down. This is because there isn’t enough room for the plant roots. The tomato is a small, cherry-sized fruit. That particular tomato is by far the largest plant that I grow. In mid to late April, plant one tomato plant into a 40cm hanging basket filled with a Best Buy compost for containers. Hanging plants can be housed within pots designed for hanging. You need to pull the whole plant gently, so the fruit still attaches to the plant itself. First, you will want to pick the tomato plant that you want to move indoors. 3 tomato Postiplug plants (KB8376) 6 tomato Postiplug plants (KB8377) 1 x 8.5cm potted tomato plant (KA9191) 3 x 8.5cm potted tomato plants (KA9192) 3 tomato Postiplug plants + raffia ties (KB0233) 6 tomato Postiplug plants + raffia ties (KB0234) Don’t let the pots dry out. Caption: Sow tomatoes indoors. Then hang it upside down in a garage, cellar or shed where the temperature remains above freezing. Tomato plants behave according to the amount of space they have available. It spreads to fill hanging baskets and then trails down the sides. The vertical aspect is often forgotten and a hanging plant is a great way to include greenery within a small space. Things To Check When Ripening Green Tomato Indoors. Planting too many plants in a hanging basket can reduce the amount of tomatoes you will eventually grow, not increase them. Some varieties of tomato are well suited to growing in hanging baskets, and this space-saving display is perfect for small gardens and balconies, especially if you want to try your hand at growing fruit and veg. They are also wonderful for those wanting to create a 'jungle theme'. There are some rules … or at least things to consider, before choosing which one. The Tomato Tumbler is a specially bred tomato plant for hanging planters.