Get Yourself some Achillea 'Moonshine'

Go to your local nursery or lowe's and ask for yarrow. That is, if it will grow where
you live. It gows all over the east except along the Gulf and Atlantic coast and in
Florida and Texas. Yarrow is the common name and 'Moonshine' is a great cultivar.
It's a lovely yellow in color. It doesn't like a lot of water, and is easy to grow.
It does need dividing every 3 years or so. In fact, the University of Maryland
claims it's one of the easiest perennials to grow. Just don't try to grow it in
wet soil.