Do not plant a lot of seeds in a minimal space
While growing, also avoid overpopulation as transplanting them can result in many plants dying
Watering
Tomato plants grown in containers need more water than garden tomatoes. Soil in containers heats up faster which leads to more water evaporation.
A good rule of thumb for containers is to water until water runs freely from the bottom. Water in the morning and check the soil moisture levels again in the afternoon. If soil feels dry about 1 inch below the surface, it’s time to water again.
Remove the early flowers until the plant is about 40 cm height and 1 month after being transplanted
Remove the lower leaves
Use scissors to prune so we avoid wounding the plant
Use mulching
Use a double leader