Imagine growing a lemon tree by the biggest, brightest window in your Victorian home, and harvesting the fruits to make lemonade for your guests. Once again, Meyer lemons are the choice of many indoor gardeners. Pretty in pots, the trees like full sun, potting soil that drains easily, and regular feedings with a citrus tree fertilizer. Keep them pruned to control their size. Once the nighttime temperatures stay above 50 degrees F, you can take your tree outdoors for the summer. Enjoy the fragrant blooms, but keep some bottled lemonade on hand for a while. The sweeter-than-most-lemons can take up to a year to ripen.