Temperature: All citrus need warm conditions in order to thrive, although they can cope with surprisingly cool temperatures so long as they are not over-watered and have plenty of ventilation.
Compost: The other major consideration when cultivating citrus is the compost. The plants need a nutrient-rich growing medium that is also free draining, as they can’t abide waterlogged or excessively damp roots. Buy some purpose-made citrus compost.
Position: Position citrus plants in a bright and warm position. During the summer, they will love being outdoors where the access to fresh air and higher light levels will give them a real boost.
Watering: The trick is to keep plants moist in the summer, but never wet. In the winter, when temperatures are low and plants are growing very slowly, watering sessions should be dropped back to just once or twice a fortnight so that the compost almost dries out entirely in-between.
Food: Container plants will need regular feeding if they are to flower and set fruit successfully. Special citrus feed is available, but during the growing season it is also possible to use a liquid tomato feed or liquid seaweed solution. Apply this every week or two, according to the instructions.