I have heard Mrs. Brown say 100 time "If he sat down long enough his butt would root", referring to her husband who can root anything. It's not hard to root plants. Some are much easier than others. Some plant you can stick around your air conditioner, and they will take root because it is damp from the condensation of the air conditioner.
Emily @ http://garden-week-by-week.blogspot.com/wanted to know how to root roses and hydrangeas, so I hope this helps
You can buy rooting compound at most garden centers
Next take a cutting of the plant you want to root Now everyone does things different, I mix sand and potting soil together
Take the plant and strip it of every leaf and bud, the stem needs to be cut at an angle. It is important to remove the leaves/buds because they take up energy as the plant is trying to root. By removing them, you are helping the plant save energy. The plant shown is a hydrangea
Next I take a stick and poke it into the soil create a hole. This is so you will not knock of any of the rooting compound when you stick the plant inHere is the rose...you can see the angled end of the stem
Take and dip the angled stem into the water to get it wetthen dip into your rooting compound
Place the stem into your hole. You can see why it is good to make a hole....the compound stays on