Try to plant in a location that enjoys partial sun and remember to water moderately. Keep in mind when planting that Lemon is thought of as tender, so remember to wait until your soil is warm and the night time temperature is well above freezing before moving outside. Lemon requires a soil ph of 6.1 - 7.8 meaning it does best in weakly acidic soil - weakly alkaline soil.
Growing Lemon from seed
Transplanting Lemon
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Lemon is a tender plant.