Round up

Robert Parks via pbs
Fri, 26 Mar 2021 13:07:32 PDT
in re: surgical strikes:

Dandelions and other taprooted plants, I've had fair luck with either a
little spritz at the center of active growth or severing the rosette and
spritzing/painting the taproot, if there is any resprouting, it is small
and weak and easily retreated. Non-geophyte plants that don't resprout from
the roots just have to be cut below the level of the first leaves. For
invasive geophytes, a combination of treatment and exhausting the storage
organs may be necessary (plus dealing with seeds or above ground bulblets).

On Fri, Mar 26, 2021 at 12:32 PM Jane McGary via pbs <> wrote:

> Regarding Nils's wish for a way to apply glyphosate "surgically,"
> something I've thought about a lot too, I think the place to look is in
> veterinary supplies. I seem to recall seeing large syringe-type devices
> used on cows' udders. I may get one and try it on long-established
> dandelions, severing the taproot and shooting it into the lower part.
> Just spraying them with Roundup (or even Crossbow, which I think is
> 2,4-D) does not kill them. However, I don't think it would work on
> Spanish bluebell (Hyacinthoides umbellata), because the main bulb is
> surrounded by many smaller ones. Like the dandelions, they were here
> when I bought this place, and will probably be here long afterward,
> though I'm discouraging them by pulling out the leaves once they have
> emerged.
> Jane McGary, Portland, Oregon, USA
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