With St. Patrick's Day this Sunday, we'll be seeing plenty of shamrocks. So what are they and why are they associated with Ireland and St. Pat's Day?

According to finegardening.com:

"Shamrocks have been symbolic of many things over the years. According to legend, the shamrock was a sacred plant to the Druids of Ireland because its leaves formed a triad, and three was a mystical number in the Celtic religion, as in many others. St. Patrick used the shamrock in the 5th century to illustrate the doctrine of the Holy Trinity as he introduced Christianity to Ireland."

Now if you'd like to make your own shamrocks for decorations, here's a short video on how to draw one: