Citrofortunella x floridana
Lemon trees grow well in peat moss mix because it is mildly acidic and well-draining. Buy it or another acidic, well-draining soil mix from a nearby garden center or plant nursery.
Soils meant for cacti will also work well for citrus trees.
Lemon trees grow best when they have at least 8-12 hours of direct sunlight. Choose a spot by a window where your plant will get direct sunlight all day.
If you're in a location that doesn't get a lot of sun, set up a grow light near the plant and leave it on for up to 12 hours a day.
If your lemon tree doesn't get enough water, the natural salts that it produces may accumulate in the soil. Keep the soil moist, but not waterlogged to prevent root rot.
If using hard tap water, you may need to drop the water's pH before giving it to your tree. If your tree’s leaves are curling, your tree needs more water.
Fertilize your plant once every few months. Lemon trees grow well if they get plenty of nitrogen—you can find nitrogen-rich fertilizers at most plant stores. Feed your plant once every 3 weeks in spring or summer and once every 6 weeks in fall and winter.
Photo is just for indication, the tree might have fruit on it or no fruit.