Today...an educational post!  If you have recently bought spearmint plants for your garden, take all of them back but one.  Spearmint is a perennial, returns year after year, and if you snap off a sprig and stick it in water, within a handful of days, you will see tiny roots.  Spearmint will re-root itself.  The new roots in the photos above are hard to see, but they are there.  I am going to let them grow for about another week and then put the plant in its new home of potting soil and relocate it to the sunny deck.  I will probably split the mama plant a couple of more times to get enough spearmint to make mojitos throughout the Summer.  :)