Grow sweet and tangy fruit from your own citrus trees. Native to warm, humid climates, these tropical trees are unique choices for homegrown fruit. You can grow citrus trees, like lemons, key limes, and oranges, even if you live in cooler climates — simply plant in containers and move indoors for protection before cold temperatures arrive. Since citrus trees rarely require dormant rest to be fruitful, they may bloom again while the previous fruit crop is still ripening. When potted, these trees also make great options for small-space fruit gardeners with well-lighted balconies, porches, and patios.