1.   ...a perennial herb with greenish-yellow flowers.

2.   Also threatened was the small whorled pogonia, a perennial herb.

3.   As opposed to perennial herbs like thyme, tarragon and oregano, annual herbs have to be planted each year.

4.   Chives, and their cousin garlic chives, are the ultimate perennial herb.

5.   French tarragon, Greek oregano, thyme and chives are perennial herbs that are as wonderful to look at as they are to eat.

6.   Licorice is actually a perennial herb.

7.   Perennial herbs should be harvested in summer to encourage new growth the next spring.

8.   People may think of licorice as just candy, but real licorice, made from the root of a perennial herb, has some potent medicinal properties.

9.   Some perennial herbs can be slow growers when started from seed.

10.   This perennial herb is used in making soap and is sometimes called soapwort.