herbicide or incorporate it too deeply into the soil. Sunlight and
temperature, as it affects seed germination and growth rate, can
indirectly cause herbicide failure.
different weeds at different times of the year an application of Roundup
followed by tilling or disking may be used to control perennial weeds on
abandoned or converted farm sites. This site preparation may be
followed by a preemergent herbicide in late winter or early spring.
Roundup can often be used for mid-season applications as directed sprays for control of annuals,
perennials, and woody weeds
conifer growth has fully matured (hardened), for effective control of
brush and perennials.
manner not specified on the label and by doing so can nullify the
pesticide application training. It should be noted that many herbicides
which are listed for ornamental, forest, or nursery applications are not
included, even though they may be listed as safe on the label for a
particular tree species.
additional herbicides to be used legally in Christmas tree plantations.