[Invasive-species] a question about Crassula helmsii, an invasive waterplant species in Western Europe

[Richard Lansdown]

Dear Steven,

 

It is my belief that in the UK no method has been found to control this
species successfully; even in the most successful cases, control of C.
helmsii has required the eradication of all plants in a wetland.

 

I would be very interested to hear of successful control.

Best wishes

Richard

 

-------------------------------------------------------

Richard Lansdown

Chair IUCN/SSC Freshwater Plant Specialist Group

Ardeola Environmental Services

45 The Bridle

Stroud

Glos. GL5 4SQ

Tel: 01453 763348

Mob: 07802196494

 

From: invasive-species-bounces at biodiversity.be
[mailto:invasive-species-bounces at biodiversity.be] On Behalf Of Steven
Keteleer
Sent: 16 October 2012 22:33
To: invasieve soorten mailinglijst; invasive-species-owner at biodiversity.be
Subject: [Invasive-species] a question about Crassula helmsii, an invasive
waterplant species in Western Europe

 

Dear members of this mailing list,

 

I've been asked to get information about the most effective combats against
Crassula helmsii. This species is now widely scaterred in Flanders and
before that elsewhere in Western Europe.

 

Is there anyone between you who knows a way to fight this invasive
waterplant effectively?

 

I should like to know about cases in other countries than Belgium and
Flanders where methods of combats against this species are proven to be
effective and efficiënt.

Particullarly important to us is the effectiveness over the longer term.
Thus, which methods are proven to make this species disappear for a longer
period?

Of course methods without the use of poison are of most interest. 

 

Answers may be send to my private email but may also be shared over this
list.

 

Kind regards,

 

Steven Keteleer

 

 

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