Growing a lemon or other type of citrus tree has the benefits of bearing edible fruit but also beautiful and extremely fragrant flowers. As a tropical plant, it requires a little TLC to survive here in Minnesota but it's well worth the bit of extra time and effort.
Of course you can keep the tree, potted in a large container, outdoors in the summer to thrive in the heat and sunshine. Just keep it well watered. I have a Meyer lemon tree that I fertilize on Valentine's Day, Memorial Day and Labor Day with an organic citrus fertilizer.
You'll have to bring it in before the weather turns cool in the fall. The tree at this point will start to lose its leaves... sometimes all of them! Don't worry. It's trying to acclimate to it's new climate and the leaves will come back. So will the blooms! While bees and other insects would pollinate the tree for you outside, you'll have to take on that responsibility for the blooms that open while the tree is inside. With a small, clean paintbrush, gently touch each of the flowers on the tree to spread pollen from blossom to blossom.
When it comes to the soil, citrus like it a bit acidic, so mix in some peat moss. Most importantly give it as much sun from a nearby window as possible. A southern exposure is best.