Plant your Kaffir lime seeds in a position where there sun is shining for as much of the day as possible. This is known as a full-sun position and will ensure that the plant gets as much sun as it needs.
Water the plants daily and feed them every six to eight weeks. When feeding, alternate a citrus food product with a dynamic lifter product. Additionally, you can feed the plant with a 3- to 4-month Osmocote, as long as it is given during the spring or early summer.
Fertilize the plant every August and February when it is fully grown. A fully grown Kaffir lime plant will be around 1.5 meters tall, and must be well-watered when the fruit is forming in the spring and early summer.