My flower garden: Chamomile

Chamomile is a pretty little daisy like flower that is commonly known for herbal tea.  They are also very easy to grow in your garden.  You can get German, which is an annual, or Roman, which is a perennial.  Either kind should spread and form a nice ground cover that you can walk on without hurting the plants.  They smell sort of like apples and are calming and relaxing.  They will continue to bloom throughout the summer providing you with tons of flowers to keep you busy harvesting.
I grow Roman chamomile in my flower garden because then I don't have to replant it every year.  I find that growing it from seed is a little difficult because the seeds are so tiny and delicate.  I ended up buying a few plants and they have spread like crazy and I probably won't ever need to buy any more.
I grow chamomile for the herbal tea.  Sometimes you come home from a hard day at work and you just need something warm and relaxing.  By harvesting the flowers all summer, you will end up with quite a stash for the winter.  I have about four plants in my garden and it provides for two of us pretty well.  I will likely get a few more when I have the room though.  In addition to being relaxing, chamomile is also a good anti-inflammatory and good for toothaches, allergies, burns, anemia, fevers, and indigestion. All of these great uses make it worth the effort it takes to harvest the flowers.
Harvesting can be quite tedious.  They are little tiny flowers that bloom all summer so you are never done harvesting them.  I harvest mine currently by cutting each bloom with scissors and dropping them into a paper bag to dry.  I am looking into some of the contraptions they make to harvest with and will likely try one out next year.  They are just like the rakes used to harvest blueberries I think.  Either way, it really is worth the effort.