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

[Tasker, Alan V - APHIS]

Depends on the effectiveness of the Biocontrol agent.  That is why BC practitioners often prefer to see multiple agents attacking multiple sites.

Alan V. Tasker, Ph.D.
Senior Regulatory Policy Specialist
USDA  Animal & Plant Health Inspection Service
Plant Protection & Quarantine
Regulations, Permits & Manuals;
Plants for Planting Import Policy Staff
4700 River Road, 4C01.23
Riverdale, MD 20737

Alan.V.Tasker at aphis.usda.gov<mailto:Alan.V.Tasker at aphis.usda.gov>

Desk     301-851-2224 Mobile 301-346-7207
Fax        301-734-8692
http://www.aphis.usda.gov/planthealth/nappra

Subscribe to the PPQ Stakeholder registry at: https://public.govdelivery.com/accounts/USDAAPHIS/subscriber/new


From: MAIPC [mailto:maipc-bounces at lists.maipc.org] On Behalf Of Ellis, Michael
Sent: Thursday, May 28, 2015 2:13 PM
To: MA-IPC MA-IPC
Subject: [MAIPC] The Garlic Monster - Third Year Adults and Beyond.

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:

<Image deleted to save band width>

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<http://www.pgparks.com>

240-429-5042<tel:240-429-5042>

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