I don't Rue the day I became acquainted with Rue.
Rue (Ruta graveolens) is an herb with feathery green-blue leaves, and yellow flowers blooming in late spring. Historically, it was a symbol of sorrow and repentance, and was called the herb-of-grace in medieval times. It was considered a reliable defense against witches and warding off the plague in the middle ages, but I don't think there is much scientific evidence to back those claims up.
The leaves are tiny and deeply-lobed, and look good as a background in any garden. I planted a row in the back of my herb garden, and often congratulate myself for my great landscape sense...
The flowers, five yellow points, appear in early spring and last for a month or two.
Rue is a great looking garden plant, but I don't advise using it for anything other than a great looking garden plant. It can be poisonous, causes severe gastric distress when ingested, and the oil on the leaves can cause a severe skin rash in some people. But still, doesn't it look great?