When life gives you lemons, make lemonade — but what about when life does not give you lemons? Well, you make the lemons yourself (with a bit of soil, gardening and patience for about 15 years!).

Don't toss that supermarket lemon. Learn how to grow lemon trees (Citrus x limon) from seeds to produce one of the most fragrant flowering trees around.

Lemons might bring to mind sunny and warm climates, but you can grow one potted variety of the citrus fruit in your house ...