I got this from a yahoo group that I was in a while ago called Magic_Light.



TO MAKE AN HERB BROOM
Collect handfuls of plants to use ,such as:
Yarrow
Cedar
Juniper
Fruit tree sprigs
Oak tree sprigs
Birch or ash sprigs
Bundle plants together and tie cut ends together. The bundle may be
tied to a branch if a longer handle is desired. Use the broom to
sweep away negativity and to sweep your magic circle clean.