An interesting fact is that Victorian royals and landed gentry used to keep greenhouse structures they called orangeries, where they would grow citrus fruit trees. <br /><br />You can grow lemons, or other citrus fruit trees indoors, as long as you have enough sunlight for them. You should put them by the sunniest window in your abode. <br /><br />Citrus trees should be watered so that the soil is dry to the touch between waterings. Also, it's recommended that you don't allow them to sit in standing water that has collected in the saucer.<br /><br />Apparently, it's also important to fertilize fairly regularly. The article I read recommends 3 times per year: early spring, early summer and late summer. <br /><br />Also, I learned that the Meyer lemon tree is popular for growing indoors for it's sweet fruit.
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