BOTANICAL INVADERS
INVASIVE ORNAMENTALS
THESE ORNAMENTALS BECOME TOO SUCCESSFUL
IN OREGON
Some vigorous non-native ornamentals can escape
and out-compete native plants. OSU Extension horticulturist
Linda McMahan recommends what to avoid planting in your
garden.
NEW
ONLINE GARDENSMART OREGON OFFERS ECO-ALTERNATIVES TO INVASIVES
Want
help making ecological choices about what to plant in your
gardens? Click on GardenSmart Oregon, a 52-page, photo-illustrated
booklet, co-produced by OSU Extension.
HOW
TO PREVENT BUTTERFLY BUSH FROM SPREADING NOXIOUSLY
Butterfly
bush can be a very invasive shrub in the PNW. An OSU Extension
horticulturist explains how to help prevent its spread.
AGGRESSIVE
JAPANESE KNOTWEED DIFFICULT TO ERADICATE
Originally imported
as a garden plant into America from Asia, Japanese knotweed
has become a nightmare along PNW waterways, explains OSU
Extension horticulturist Chip Bubl.
ENGLISH
IVY IS INVASIVE IN PACIFIC NORTHWEST
Given a foothold, English
ivy suppresses and excludes other vegetation. Advice on
how to get rid of this dense, exotic groundcover, from Linda
McMahan, OSU Extension horticulturist.
WEEDS TO WATCH
FALSE
BROME IS A RAPIDLY INVASIVE GRASS IN WESTERN OREGON
OSU
Extension forester Brad Withrow-Robinson explains how to
identify this rapidly spreading exotic grass and what to
do about it.
LOOK
OUT FOR PRICKLY PATERSON'S CURSE IN WILDFLOWER SEED MIXES
Introduced
into Oregon in 2003 in a wildflower seed mix, Paterson's
Curse has the potential to severely degrade agricultural
and native habitats, explains OSU Extension weed scientist
Andy Hulting.
PUNCTUREVINE
SEEDS ARE VICIOUS
Puncturevine weed seeds can cause bicycle
flats and penetrate sneakers, explains Rich Affeldt, OSU
Extension crop scientist. How to identify and control this
spiny threat.
HOW
TO REDUCE YOUR BLACKBERRY THICKET TO A FEW STRAGGLERS
Goats,
elbow grease or herbicides? OSU Extension crop scientist
Susan Aldrich-Markham offers an array of control methods
for blackberries.
SCOTCH
BROOM IS BEAUTIFUL, BUT NOXIOUS
Aggressive Scotch broom
spreads at the expense of young trees, pasture grasses and
native plants.
MORE ABOUT WEEDS FROM OSU ONLINE:
Noxious
Weeds May Be Pretty But…. (EC 1419)
Aquatic
Vegetation Management and Control (PNW 224)
Perennial
Weed Biology and Management (EM 8776)
Managing
Himalayan Blackberry in Western Oregon Riparian Areas (EM
8894)
OSU's
OREGON
WEED SCIENCE LINKS WEB PAGE
ONE-MINUTE GARDENER
Gardening
tips from OSU Extension's radio archive. Turn
your speakers on and visit the links below:
USE
HERBICIDES CAREFULLY
SMOTHER
WEEDS WITH LANDSCAPE FABRIC
JUNE GARDEN CALENDAR
THINGS
TO DO IN YOUR GARDEN THIS MONTH |
