[MAIPC] The Garlic Monster - Third Year Adults and Beyond.

[frazmo]

This discussion makes me wonder about two things:

1. Could we unwittingly be creating selection for those "super" Garlic
Mustard plants that are able to survive having the main stem broken off and
develop viable seeds from resprouts later?
Similarly I have wondered whether we may be creating selection pressure for
dwarfism as we pull the most prominent plants. I find many flowering
dwarves.

2. Given the reports of allelopathic properties of GM, folks have suggested
that it is undesirable to leave roots in place since they presumably
contribute to the release of the allelopathic
agents. This may be an additional argument in facor of maximizing effort to
get the roots out.

Cheers,  Steve Young, "Arlington Steve"
MAIPC Treasurer
Blog: Plantwhacker.com


On Thu, May 28, 2015 at 2:12 PM, Ellis, Michael <Michael.Ellis at pgparks.com>
wrote:

>  As we begin to wrap up our Garlic Mustard season, I've become fascinated
> by the resiliency of the species.
>
>  I'm seeing tremendous numbers of garlic mustard adults surviving into a
> third year if their stems were broken off in the year prior. Their wounds
> simply heal, their roots become massive and they sprout new stems and seeds.
>
>  Here is a photo I took today in Beltsville of a specimen that survived
> our great Garlic Mustard pull of 2014, healed, and re-emerged:
>
>
>
> Would this not imply that these plants can come up again, possibly a
> fourth of fifth year if seeding was unsuccessful?
>
>  This has me wondering if plants could bounce back after damage from say,
> an introduced biological control.
>
>  Any thoughts?
>
> Michael Ellis
> Non-Native Invasive Plant Specialist
> Natural and Historical Resources Division, Park Ranger Office
> The Maryland-National Capital Park and Planning Commission
> www.pgparks.com
>
> 240-429-5042
>
>
> _______________________________________________
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>
>
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