Learn to
identify plants; know your property; beware of fill dirt, hay and seed
from outside your area
Biological – Well established in area and cyclically effective
since early 1950’s; some newer biocontrols have been introduced which
may even out cycles
Cultural – Good vegetative cover lessens likelihood of initial
infestation
Mechanical – Regular tillage is effective but pulling and
cutting are only marginally effective due to being a perennial plant
with rhizomes
Chemical – Some effective at label rates if timing is right and
re-growth is treated as necessary;
refer to the
PNW Weed Management Handbook for specific chemical recommendations
