Growing tomatoes in growing bags

The compost in vegetable growing bags is specially formulated for optimum growth, but it can dry out quickly. To overcome this problem, increase the volume by inserting open-ended pots into the holes in the top of the bags, and then fill them with good-quality multi-purpose compost. The extra compost gives the plant roots more space to develop, and holds more water.
1  Using a knife, make drainage holes in the base of the bag and cut three large circles in the top. Insert bottomless plastic pots (make your own or buy ready-made) into the openings and fill with extra compost.	2  Transfer your tomato plants to the growing bag when their first flowers are about to open. Plant one tomato per pot, positioning the root ball just below the top of the compost, and water them in well.
3  Add canes for support, and pinch off all fast-growing side shoots that appear between the leaves and the main stem, as they divert energy away from fruit production. Apply a weekly dose of liquid tomato fertilizer.	4  As the main stems grow, tie them to the canes with soft twine. Prevent the plants from growing too tall by removing the uppermost tip, two or three leaves beyond the last cluster of fruit on the stem.	5  Keep your tomato plants well watered throughout the growing season; the fruits may either split or succumb to disease if they do not receive sufficient moisture. If you are growing tomatoes in a greenhouse, or you have a number of containers to care for, consider installing an automatic watering system