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Please click on a letter to list all weeds in archive beginning
with that letter.
Impatiens balfourii
Ipomea indica
Ipomea cairica
Iridaceae
spp.
Impatiens balfourii - Impatiens
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Date: Thu, 23 Feb 2006
From: Wojciech Adamowski <kruszczyk1989@yahoo.com>
You can see first results of long-distance
Impatiens cooperation at:
http://www.iewf.org/weedid/index_by_reserve.htm
There are two fact sheets on Impatiens. I'd like to produce more,
but there is problem - lack of illustrations. If anyone of you can
send me pictures of I. niamniamensis, I. balsamina or I. balfourii
(whole plant, inflorescence, single flower, leaf, etc.) it will
be very helpful.
Another problem is extent of Impatiens
cultivation in Australia. I suppose central part of continent is
to dry to any attempts of cultivation. On the other hand, I. walleriana
is spreading in some places along eastern shore. But where is the
border? Any data on any Impatiens cultivation and/or naturalisation
will be precious. Maybe we will be lucky enough to find something
new?
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Date: Fri, 24 Feb 2006
From: Brian Bainbridge <brian@mcmc.org.au>
We have a small but persistant infestation of Impatiens balfouri
on the Merri Creek at Coburg North in Melbourne at a street-drain
outlet. The landscape is almost entirely exotic weeds at this point.
The identification was confirmed by the Melbourne Herbarium a couple
of years ago and the plant listed as 'incipiently naturalised'.
The colony has not expanded more than a few metres in circumference
but is particularly numerous this year (several hundred plants)
. A couple of other doubtfully naturalised populations were in the
herbarium records. (John Reid pers comm, National Herbarium of Melbourne).
We will soon make a concerted effort at eradication in the coming
month but I will try to get photos as per the website prior and
send them on.
I am a keen observer of gardens and have seen I. balfouri in only
a handful of gardens, generally growing as self sown plants in neglected
areas. One that remains in my memory was outside the reception foyer
of the headquarters for Penguin Books in Ringwood. I last saw this
garden about thirteen years ago. The species does not seem to be
widely cultivated and I have never seen it for sale.
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Date: Fri, 24 Feb 2006
From: Sheldon <S.Navie@uq.edu.au>
Australia's virtual herbarium has maps of the known distribution
of all species, including Impatiens walleriana, in Australia (however,
these maps are generated from herbarium records and probably underestimate
the actual distribution of the species).
I have attached the map of Impatiens walleriana from this website.
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Date: Tue, 10 Jan 2006
From: Peter Martin <peter.martin@adelaide.edu.au>
I am botanist interested in Impatiens.
At this moment I am collecting data on I. balfourii. One of specialists-gardeners
informed me that the species is escaping from culture in Victoria.
I checked electronic Australian flora and found nothing on the subject.
I would like to ask you for help in confirmation of the fact. If
you can not do it personally, please give me advice whom to contact.
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Date: Tue, 10 Jan 2006
From: Sheldon <S.Navie@uq.edu.au>
Yes, the Census of the Vascular Plants of Victoria (7th edition),
published in 2003, has Impatiens balfourii listed as newly naturalised
in Victoria.
For more information about where this species has been recorded,
I suggest you contact the National Herbarium of Victoria.
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Date: Tue, 10 Jan 2006
From: David McKenzie <David.Mackenzie@csiro.au>
I can offer support to your garden-specialist contact's claim that
Impatiens is escaping from culture.
At Rosedale on the NSW Far South Coast (ca 20 km S of Batemans
Bay) Impatiens has been grown as a garden plant, possibly for up
to 20 y, and can be seen growing on nearby roadsides. Eurobodalla
Shire Council lists Impatiens spp as known garden escapees that
so far have not become a problem in the Shire: (http://www.esc.nsw.gov.au/weeds/
then look under Further reading and then More Garden Escapees).
Impatiens has shown that it is capable of spreading at Rosedale
and the fact that it has yet to spread into nearby reserves might
be a function of increased awareness through the local Association
Newsletter: some at least heave, albeit reluctantly, stopped growing
it and more folk are observing and removing weeds in our reserves.
Impatiens spp and hybrids could well be sleepers, weeds waiting
for the development of ecological niches to into which they can
escape.
The ESC listing is specifically Balsam, busy lizzie (Impatiens
walleriana). However, I cannot say which of the many Impatiens spp
and hybrids I have been observing. Apparently the generic name relates
to their impatience at spreading and as they hybridise at the drop
of a hat, what I observe could include undescribed cultivars.
I note your study appears to be restricted to I.balfourii but I
would urge you to consider the entire group as a study topic in
the hope that you might identify both the most and the least invasive
individuals. This could lend weight to the promotion of species
and hybrids of low invasive potential in horticulture and the gradual
phasing out of currently grown species of high invasive potential.
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Date: Tue, 10 Jan 2006
From: Sandy Lloyd <slloyd@agric.wa.gov.au>
There is a small infestation of Impatiens ?sodenii in the south-west
of WA.
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Date: Tue, 10 Jan 2006
From: <David.Mackenzie@csiro.au>
In my posting earlier today in response to Wojciech Adamowski,
who asked for data supporting the escape from culture of Impatiens
spp, I was not aware he wrote from Poland. I do not wish to alter
my response as a result of this knowledge but I thought it might
provoke some additional response from Australian members of the
list at least. I take the liberty of copying his reply to me below.
Some explanations: I can't attach the poster he sent so I include
it in the text below his response. The mentioned web page is the
Eurobodalla Shire Council weeds page mentioned in my earlier posting
(http://www.esc.nsw.gov.au/weeds/ then look under Further reading
and then More Garden Escapees). I have no photos (yet) but I have
undertaken to take some for him and to try to find the ID of the
Impatiens spp I have encountered.
If any of you can help him further, especially with local details
that may make his searches from Poland a bit easier, please do.
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Date: Wed, 11 Jan 2006
From: Neville Walsh <Neville.Walsh@rbg.vic.gov.au>
We have herbarium specimens supporting 2 naturalised populations
of I. balfouri in the Melbourne area. One of these (collected 1999)
is on the banks of Merri Ck, Coburg (c. 8 km N of Melbourne GPO)
on basaltic clay, in mostly exotic riparian vegetation (Salix, Phalaris,
native Callistemon sieberi). The collector noted that this was the
second year of persistence of the population (2 patches c. 5 x 5
m) and it was expanding. The other collection is from Kalorama in
the Dandenong Ranges at c. 350 m altitude, c. 50 km E of Melbourne
GPO where the plants occupied c. 75 m along a roadside in mixed
native/exotic vegetation (tall Eucalyptus regnans etc. forest developed
on loamy soil derived from granodiorite). The area is renowned for
garden escapes and spp. such as Hedera helix, Plectranthus fruiticosus,
Viola odorata, Potentilla indica were co-occurring. Plants were
collected from this site in 2002 and 2004. A solitary plant in the
same general area and circumstance (but a distinct locality) was
collected in 2003.
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Date: Wed, 11 Jan 2006
From: Sheldon <S.Navie@uq.edu.au>
Regarding naturalisation of all Impatiens species in Australia,
Impatiens balfourii - Neville has given an excellent assessment
of the situation in Victoria. John Hosking's database has this species
recorded as naturalized in NSW in 2004 (although the NSW website
PlantNET has not been updated to reflect this yet).
Impatiens sodenii - Sandy has already mentioned its presence in
south-western WA. The photo on the ESC (South Coast Weeds) website
is most probably of this species and not I. walleriana. I am glad
you have contacted Jackie Miles (the author of the website), she
has taken most of the photos and will be able to tell you whether
the photo was taken of naturalized plants or not. [If the photo
is of naturalized plants then I would suggest that she should collect
a specimen and send it in to the NSW herbarium, as this may be a
new record for NSW!].
Impatiens walleriana - this species is widely naturalised in the
coastal districts of Queensland and NSW. It is particularly common
in south-eastern Queensland and is on the list of the 200 worst
environmental weeds if South-eastern Queensland (at number 142).
See also the Pacific Island Ecosystems at Risk (PIER) website for
information on the presence of this species throughout the Pacific
region (http://www.hear.org/pier/species/impatiens_walleriana.htm).
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Date: Wed, 11 Jan 2006
From: Jackie Miles <jmiles@acr.net.au>
Just to toss in my two bob's worth on this subject, the Impatiens
on the Eurobodalla weed website was a naturalised population filling
the bottom of a shady gully within the coastal town of Merimbula,
SE NSW. My impression is that it would require cool, moist conditions
to naturalise. That is the only place I have seen it do so, and
in fact I have never seen it in a garden round my area, so the source
of propagules may be another thing limiting its establishment.
I did not submit a specimen to the RBG, and I'm not 100% sure of
the identification to species level, but I will rectify that asap.
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Date: Wed, 11 Jan 2006
From: Wojciech Adamowski <kruszczyk1989@yahoo.com>
Many thanks for information avalanche and your interest! I am botanist
interested in invasions. One of my favorite taxa is Impatiens -
big and complicated genus with at least 1000 species, mainly in
tropical and subtropical regions of Asia and Africa.
I am working in Bialowieza, Poland, in the center of last primeval
forest in European lowlands, where European bisons are roaming free.
I am planning serie of papers on particular Impatiens species (focusing
on invasion history and present distribution on global scale). I
am interested also in cultivated species, as cultivated plants are
base for future invasions. I am looking for following data: year
of introduction to culture, extent of cultivation, year of first
observation as spontaneous, dynamical tendencies, invaded habitats,
etc.
Photo documentation will be greatly appreciated. At this moment
I am focusing on I. balfourii - sprea! ding especially in S Europe,
but present also in USA, Japan and Australia. I hope to show results
of my study (common with colleagues from Slovakia and Hungary) in
next NEOBIOTA meeting in September. Do you have any photographs
of the species from Australian localities near Melbourne?
If you have problems with Impatiens determination I can try to
help you. I need good photo with flowers, leaves, stems and general
habit. I am not very experienced Impatiens taxonomist but still
only few Impatiens are reported as invasive.
Ipomea indica - Morning glory
Ipomea cairica - Coastal Morning Glory
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Date: Thu, 09 Mar 2006
From: Michelle Gooding <MGooding@hobsonsbay.vic.gov.au>
Is there any legislation restricting Morning
glory in Victoria. Does anyone have any suggestions for a resident
whose neighbours plant is escaping over the fence and up his tree?
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Date: Thu, 09 Mar 2006
From: Rod Randall <RPRandall@agric.wa.gov.au>
People need to talk to their neighbours. This plant causes many
neighbourhood fenceline disputes and most really could be solved
just by good communication between neighbours, with the last resort
being the various council acts regarding fencelines and vegetation
intruding past fences.
I get heaps of calls from people who want to bring the "law"
down on their neighbours for this plant and they have rarely ever
spoken to the neighbour about the problem first.
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Date: Tue, 14 Feb 2006
From: Christina Potts <mysterybaycampground@aapt.net.au>
I am a bush regen worker on sth coast
NSW. We have been trying to control the spread of Coastal Morning
Glory, Ipomea cairicea. On cliff situation, we have tried stem scrape
but seems to only kill small section of the stem, about 2 metres
either side of the scrape. Does anyone have annoy tips for control,
ie cut and paint vs rolling up trailing vines as much as poss. It
seems to resprount very well from any left over stem fragments.
Thanks for any comments or advice.
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Date: Wed, 15 Feb 2006
From: Alan & Claire Wynn <wynn@serv.net.au>
I have had success using a combo of stem scraping, manual removal
and foliar spraying any regrowth with Amicide 625 at a rate of 4
ml/L. And as always follow up as in SE qld it does produce viable
seed which seem to germinate for quite a while (2 years and counting)
after removal of seed source.
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Date: Wed, 15 Feb 2006
From: Alan & Claire Wynn <wynn@serv.net.au>
I haven't tried lower rates of Amicide but will do some trials.
Though at the moment most of the leaves seem to be damaged by something.
Haven't had a chance to inspect them properly to find out what is
causing it. So I will probably have to wait until next spring. Thanks
for the info.
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Sent: Fri, 19 Apr 2002
From: <ACoughlan ssc.nsw.gov.au>
While on the subject. A very interest
find in the Sutherland area ( south of Sydney, NSW) One of our Bushcare
Officers, Jason Salmon, has brought in what we believe to be viable
fruit on Ipomea indica(Blue Morning Glory). Jason sewed the seed
at the nursery and obtained germination within a week. Characteristics
of specimen agree with description in Flora Vol. 3. and NO we do
not think it could be I. purpurea! Jason has received verbal conformation
of this ID from the RBG herbarium. We are awaiting further confirmation.
Any one else encountered this "new " phenomena?
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Sent: Tues, 23 April 2002
From: Gabrielle Viviansmith <gabrielle.viviansmithdnr.qld.gov.au>
If you have any other reports of fruiting morning glory - please
pass them on -I'm working on a dispersal study of high impact weedy
vines.
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Date: Wed, 1 May 2002
From: Melanie Newfield <mnewfielddoc.govt.nz>
Okay, as promised, here is what I know about the seeding behaviour
of Ipomoea indica (blue morning glory, or to save my typing BMG).
If I'm wrong on any of this let me know, but this is how I remember
it from working on this problem a few years back.
BMG is tropical in origin and widely cultivated in tropical and
temperate regions. It is commonly naturalised in parts of NZ which
don't get much frost (and is considered a weed), also Australia
and probably other places. In NZ spread is almost exclusively vegetative
as seed is seldom produced, and I understand this is true for BMG
throughout its range.
The first time I heard anything different was in 1996 when I saw
a specimen collected by Walter Stahel of Environment Bay of PLenty.
Walter found a patch of BMG that was seeding abundantly, and seedlings
were also present. At Landcare Research we grew the seed on (it
seemed to have good viability) and some of the plants produced had
white flowers which is bit weird but not unknown.
The following year, in Tonga, Bill Sykes found a plant of BMG which
was also seeding prolifically. This was particularly interesting
because the BMG in Tonga looks a bit different to the NZ material
and is possibly a different variety (bit of a taxonomic mess with
this plant).
Since then, I haven't seen or heard of any further populations
of BMG which are seeding, until this email to enviroweeds. As far
as I am aware the phenomenon hasn't spread particularly, nor has
it significantly increased the weediness of BMG in these areas (although
without a doubt it potentially could be a real problem).
To be honest, I haven't got the faintest idea what is going on with
this plant. It seems improbable that environmental conditions have
resulted in seeding in areas that are so far apart and different
from eachother. However since the plants in NZ and Tonga appear
quite different from eachother but similar to the local populations,
it seems unlikely that there is a genetic reason. I really don't
have any idea what has caused this and whether it is going to happen
again.
Fortunately this species is not a serious problem in the Nelson
Region, but unfortunately as a result I haven't been able to do
any work on it. However I am interested, and would appreciate it
if anyone who does know of seeding population of BMG would let me
know. That way, if there is somebody wanting to work on it I can
pass on any records.
Andrew, I'm interested to see what other responses you had to your
email, I would be really appreciative if you pass on anything you
think might be relevant.
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Date: Thu, 2 May 2002
From: Mark Robinson <landcarewyong.nsw.gov.au>
I have only ever observed white or purplish flowers in Coastal
Morning Glory (Ipomea cairica)(Convolvulaceae) in Central
Coast Botanical Division, NSW yours against exotic Morning Glories
mark
Iridaceae sp.
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Date: Fri, 04 Jun 2004
From: Michaele Walsh <m.walsh1pgrad.unimelb.edu.au>
My name is Michaela Walsh, and I have
just begun a PhD at Burnley College, The University of Melbourne.
My supervisors are Roger Cousens and Greg Moore. My project is on
population biology and physiology of weedy Iridaceae. I am focussing
on Freesia, and am trying to locate populations. I am looking for
areas in or as close to Melbourne as possible, preferably not on
a roadside, and with a substantial number of plants. John Weiss,
Michael Hansford, and Geoff Carr have already assisted me in this
matter. If you know of any sites suitable to study over the next
couple of years, I would greatly appreciate your assistance. Alternatively,
you may know of any other people who might be able to help me.
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Date: Sun, 06 Jun 2004
From: Neil Tucker <neiltpipeline.com.au>
I guess you have already heard about our wonderful freesia infestations
around Anglesea. They are in bushland & home gardens as well
as roadsides.
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Date: Tue, 08 Jun 2004
From: Kathryn Batchelor <Kathryn.Batchelorcsiro.au>
FYI EWAN has produce a weed brochure on Freesias that you may find
helpful. See http://members.iinet.net.au/~ewan/pdf/Freesias.pdf
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Date: Fri, 02 Jul 2004
From: Michaele Walsh <m.walsh1pgrad.unimelb.edu.au>
Firstly I would like to thank all those who responded to my request
for freesia sites. I now have two sites to use for my project courtesy
of Trevor McIntosh and Dave Van Bockel at Parks Victoria. I am now
looking for a site with contrasting conditions, especially soil
type. I need something with relatively sandy soil. I know of many
sites around Horsham and
Nhill, but they are too far from Melbourne to be regularly studied.
If anyone knows of a site like this, or someone at a council or
such like that could help, I would really appreciate it.
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Date: Thu, 22 Jul 2004
From: Wendy Moore <woobindapipeline.com.au>
You may have already been told this but they grow all around Anglesea
in the coastal heathlands and woodlands. The local environment group
ANGAIR would be able to tell you sites. I hope this information
is of use.
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