I know I'm late to the party but I'm growing a Meyer lemon here. It's outdoors in the warmer weather and indoors under lights in the colder weather. Citrus does like a lot of compost but also free draining. If it blooms when it's indoors, I use a clean paintbrush to carry pollen from one flower to another. It's pretty successful but I get more fruits when it's outdoors being pollinated by flying creatures.
