Re: Buddlejas, invasive and not]

And now letīs take a trip to Denmark.
Here Buddleja davidii is a very valued and used  schrub in a
lot of gardens. I think it is very beautifull, and gardens with it 
 nearly allways have enormous numbers of Butterflies when 
flowering. Gardens without B. davidii often have no Butterflies at tall. 
Sometimes I have counted more than one hundred on one
large B. davidii shrub, distributed to10-15 Butterfly-species
Butterflies which finds a big garden with many D: davidii ,
"Find another day in Paradise"!
(Totally we have in Denmark only about 90 Butterfly species, 
which are nearly all seldom and/or threatened).

There have never been problems with naturalized schrubs
in Denmark. Maybe our climate is too cold. - But who knows.
With the global warming, it will maybe come some day;
but I donīt hope.
In Denmark only the species B.davidii is cultivated.

I got really surprised (nearly choked) to hear that D. davidii
is a problem with spreading in wild areas, and  that in the
Pacific Northwest of U.S. people are asked NOT to plant it. -
In all nurseries in Denmark it is a ībestsellerī!

Best regards

Kaj Dorstenia
Copenhagen, Denmark.
kaj.dorstenia@get2net.dk

----- Original Message ----- 
From: "Olwen Williams" <olwen@ihug.co.nz>
To: "Mediterannean Plants List" <medit-plants@ucdavis.edu>
Sent: Wednesday, May 14, 2003 11:26 AM
Subject: [Fwd: Re: Buddlejas, invasive and not]


> Oope I sent this reply to Moira when it should have gone to the list
> 
> -------- Original Message --------
> 
> There are buddleias grown round here (Marlborough in the top of the 
> South Island of New Zealand).  B.davidii grows wild around the 
> Marlborough Sounds region.  I have seen one variety that forms 
> magnificant specimens like a fountain with pale flower in late winter.  
> I think I've correctly identified it as B. Asiatica.  I work on the 
> Woodbourne Airforce bas and there is a large specimen there with a clump 
> about 5 foot across at the base  around 20 foot high and 25 foot  in 
> diameter.  I tried taking a cutting but didn't succeed in geting it to 
> grow!!  There's another one in a section along the road from me that's a 
> similar size.  I saw some Buddleias on a garden trek up a country valley 
> well into the hills as well. 
> 
> Tony and Moira Ryan wrote:
> 
> >Susannah wrote:
> >  
> >
> >>Buddleja davidii has begun to invade wild areas here in the Pacific
> >>Northwest of the U.S., and we are asked not to plant it.  I realize there
> >>are quite a few other Buddleja species available in the trade, and would
> >>love to try them -- but not if they seem likely to create similar problems.
> >> Anyone care to share local experiences?  Which species have you grown,
> >>have they reseeded in your garden, are any species other than B davidii
> >>common in gardens in your area?
> >>    
> >>
> >
> >Susannah
> >Although I am not a local, I thought you might anyway be interested to
> >hear the New Zealand experience with this species.
> >
> >In NZ B.davidii has escaped from cultivation so thoroughly it is now
> >classed as a National Surveillance Plant Pest, which means it can no
> >longer legally be propagated, distributed or offered for sale in this
> >country, though specimens doubtless still persist in old gardens. I have
> >myself seen evidence of its agressiveness in the wild, where in some
> >places locally it has entirely displaced valuable native plants,
> >particularly the tree Fuchsia.
> >
> >My source of information on its status is Common weeds of New Zealand
> >(NZ Plant Protction Society) which also mentions four other Buddleja
> >species as occasionally found naturalized, but gives no specific names
> >apart from B.globosa which is sometimes found in remnant forest near the
> >sites of old habitations.  
> >
> >It would appear that B davidii is the only species so far posing any
> >serious threat, but I guess this may change in time. Pehaps if one was
> >planting other species it might be wise to cut off their  inflorecences
> >before they can ripen their seeds.
> >
> >According to Botanica several other species of Buddleja are sometimes
> >grown in NZ gardens, but the only ones I am at all familar with are B
> >globosa and B. salvifolia. However I think they must be out of fashion
> >now as I have not even seen these in recent years.
> >
> >Moira
> >  
> >
>
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