Autumn Olive
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AUTUMN OLIVE– ELAEAGNUS UMBELLATA
Ben GrossmanSt. Charles County Parks
and Recreation
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OUTLINE Background and History Life Cycle Identification Spread and Impacts Control
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HISTORY Native to Asia, introduced in 1830 Planted as ornamental, erosion control,
degraded woodlands, wildlife habitat, windbreaks
Nitrogen fixer In 1940’s studied by Soil Conservation
Service ‘Cardinal’ released in 1963 for commercial
propagation Propagated by numerous state nurseries
including George O. White 1988 first wild samples collected in Warren
County
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DESCRIPTION Deciduous shrub, multi-stemmed Up to 20’ in height Simple, alternate leaves, silvery underside Small, yellowish flowers April - June (year 2-
3) Red fruit in late summer – rich in lycopene
James H. Miller, USDA Forest Service, Bugwood.org
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IDENTIFICATION Japanese Silverberry Cardinal Berry Bush Autumn Berry
David J. Moorhead, University of Georgia, Bugwood.org
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IDENTIFICATION
James H. Miller, USDA Forest Service, Bugwood.orgJames H. Miller, USDA Forest Service, Bugwood.org
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IDENTIFICATION
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
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SPREAD & IMPACT Wildlife spread seeds, primarily birds Tend to colonize, probably due to fruit drop Dense growth, heavy amount of shade Tolerate poor soil Tolerates a variety of soil conditions except wet
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CONTROL Chemical Mechanical Fire Etc. …
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CUT-STUMP Cut down, treat stump Late summer Pathway (Dow AgroSciences) – picloram &
2,4-D Tordon RTU (Dow) – picloram Garlon 4 (Dow) – triclopyr
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CUT STUMP
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FOLIAR SPRAY Milestone (Dow) – aminopyralid Garlon (Dow) – triclopyr PastureGard (Dow) – triclopyr & fluroxypyr
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PASTUREGARD
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MILESTONE
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HACK-N-SQUIRT Triclopyr Mid Summer Initially good results Moderately effective later Don’t recommend
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BASAL BARK Anytime of year, but best winter and early
spring Garlon 4 (Dow) + diesel fuel or basal oil Pathfinder (Dow) – premixed Garlon w/oil
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MECHANICAL Grip it and Rip it!
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FIRE
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BE PERSISTENT