When it comes to looking after plants, everyone knows they need sunlight and water. However, some people may not understand the vast benefits rainwater brings to plants. Although (in normal times) it's easy to water the garden using tap water, water from a tap is treated with chemicals that may stunt the growth of certain plants. Rainwater, on the other hand, doesn’t need to be treated before use, it can be used for in as well as outdoor plants, and it's free! Here's short guide to rainwater and why it's excellent for your garden. So get rain dancing folks...