Reference
- Hessayon, D. G. 1983. The Tree & Shrub Expert. Waltham Cross, Herts, England: PBI Publications. ISBN 0903505177.
- Mason, S. G. 2002. Landscape Trees and Shrubs. Minnetonka, Minn: Creative Pub. International. ISBN 1589230027.
- Tenenbaum, F. 1997. Taylor's Dictionary for Gardeners: The Definitive Guide to the Language of Horticulture. Boston, Mass: Houghton Mifflin Co. ISBN 0395876060.
External links
All links retrieved November 3, 2019.
- Selecting Shrubs for Your Home (University of Illinois Extension).
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