| Armitage, A.M. Culture, Herbaceous Perennial Plants: A Treatise on
their Identification, andGarden Attributes. Varsity Press, Inc., Athens, Georgia.
1989. |
| Brickell, C., J.D. Zuk. The American Horticultural Society A-Z
Encyclopedia of Garden Plants. DK Publishing, Inc., NY, NY. 1997. |
| Bridwell, F.M. Landscape Plants: Their Identification, Culture, and
Use. Delmar Publishers Inc.,Albany, NY. 1994. |
| Dirr, M.A. Manual of Woody Landscape Plants: Their Identification,
Ornamental Characteristics,Culture, Propagation and Uses. Stipes Publishing L.L.C.,
Champaign, Illinois. 1998. |
| Garden Web http://www.gardenweb.com |
| Hay, R. Reader's Digest Encyclopedia of Garden Plants and Flowers.
The Reader's Digest Association Limited, London, U.K. 1985. |
| Poor, J.M. Plants That Merit Attention: Volume I-Trees. Timber
Press, Portland, Oregon. 1984. |
| Preece, J.E., P.E. Read. The Biology of Horticulture: An
Introductory Textbook. John Wiley and Sons, Inc., NY. 1993. |
| Still, S.M. Manual of Herbaceous Ornamental Plants. Stipes
Publishing Co., Champaign, Illinois. 1994. |
| Whitcomb, C.E. Know it and grow it II: A Guide to the Identification
and Use of Landscape Plants. Lacebark Publications, Stillwater, OK. 1985. |