Boone County Arboretum
9190 Camp Ernst Road
Union, Kentucky 41091
Phone: (859) 384-4999
Fax: (859) 384-6888
arboretum@boonecountyky.org

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Cultural Details for Cytisus x praecox 'Hollandia'

Common Name:
Hollandia Warminster Broom

Growth Rate:
Fast

Average Mature Height:
4-6' possibly to 10'

Average Mature Width:
4-6' up to 10'

Flower Details:
Sulfur yellow in May with an unpleasant odor.

Fruit Details:
1.5-2" long pod, not ornamental.

Fall Color:
No impressive color.

Bark Details:
Angled stems of grass green color.

Disease / Insect Problems or Resistance:
Leaf spot and blight can kill this plant.

Native Habitat:
England 1867, Zones 5-8

Other Features:
The Brooms literally light up a landscape. They are effective in mass and, like Forsythia can be blinding when used in this manner. Not popular is the U.S. but appear everywhere in Europe.

Culture and Care:
Supposedly does not transplant well, prefers sandy soil but good in infertile soils in full sun to partial shade.

This plant was blooming:

Plantings of this cultivar at Boone County Arboretum:
Bed 167

    The information on this page may have come from one or more of the following sources:
  • Dirr, Michael. Manual of Woody Landscape Plants. Stipes Publishing. 1998.
  • Hightshoe, Gary L. Native Trees, Shrubs, and Vines for Urban and Rural America. John Wiley & Sons. 1988.
  • North Carolina Extension Plant Fact Sheets. www.ces.ncsu.edu
  • University of Connecticut Plant Database. www.hort.uconn.edu