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PLANT: Autumn olive (Elaeagnus
umbellata ELUM) is a bushy shrub
with scattered thorny branches
reaching 3-16 ft. in height.
IDENTIFICATION:
A slowly deciduous shrub that
produces fragrant silvery-white to
yellow flowers in spring, and many
red berries in fall. Twigs slender
and silver scaly, some lateral twigs
pointed like thorns. Branches and
main stems olive drab with many
whitish dots, becoming light gray to
gray-brown with age, eventually
fissuring to expose light brown
inner bark. Leaves are alternate,
elliptic, 2-3 inches long and 1.2
inches wide. Resembles silver thorn
or thorny olive (Elaeagnus
pungens) and Russian olive (E.
angustifolia).
ECOLOGY: Often
planted in reclamation areas and in
wildlife plantings to form dense
stands. Autumn olive spreads easily
by animal-dispersed seeds. It is
found as scattered plants in forest
openings and open forests. Shade
tolerant but prefers drier sites.
HERBICIDE CONTROL:
Apply Arsenal AC or
Vanquish as 1% solutions (4 ounces
per 3-gal. mix) in water with a
surfactant to thoroughly wet all
leaves in April to October (can
damage trees with roots in area).
For stems too tall for foliar
sprays, apply a 20% solution of
Garlon 4 (2.5 quarts per 3-gal. mix)
in commercially available basal oil,
diesel fuel, or kerosene with a
penetrant (check with herbicide
distributor) to young bark as a
basal spray (January to February or
May to October). Or, cut large stems
and immediately treat stumps with
Arsenal AC as a 10% solution (1
quart per 3-gal. mix) or a
glyphosate herbicide as a 20%
solution (2.5 quarts per 3-gal. mix)
in water with a surfactant. WARNING:
Arsenal AC and Vanquish will damage
plants with roots in the treated
area. Always read and follow label
directions carefully.
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