Re: Invasive Campanulas

The C. Cherry Bells we had looked more like the pictures, a dusky red rather
than pale pink.  I lost my first C. Cherry Bells so was surprised when the
second one really took off in a hurry.  The source from which we bought C.
Elizabeth (burgundy flowers) indicated it is a C. lactiflora hybrid (Milky
Bellflower) and mentioned nothing about C. punctata (Spotted Bellflower).
However, I've done more googling and found that C. punctata was likely a
parent, so I think we'd better price these to move fast.

I've been over the Eupatorium coelestinum issue before with others, and
agreed instead with the name Conoclinium coelestinum, but I haven't yet
checked newest resources.  We're still talking about Hardy Ageratum though,
which I haven't grown.  However, I have had experience with Ageratina
altissima which used to be called Eupatorium altissimum, so they seem to be
cousins.  While it doesn't spread much underground, it does sow all over the
place.  I've also grown Eupatorium rugosum 'Chocolate' (which may actually
be another Ageratina) and, while the clump gets a little bigger over time,
it does not spread underground and no volunteers have ever shown up in my
yard or in our nursery.

Mint?  Well, you were just asking for it. ;+)  I've only grown Chocolate
Mint, and for years it was an aggravation except when I'd run over it with
the lawn mower - heavenly!  But this year I haven't even seen it.  I think
it lost the battle with the English Ivy.

Kitty

----- Original Message ----- 
From: <Blee811@aol.com>
To: <perennials@hort.net>
Sent: Saturday, June 04, 2005 8:40 AM
Subject: Re: Invasive Campanulas


>
> Sounds more like Cherry Bells to me too. It has taken over about half of
one
> of my daffodil beds, although the daffodils don't seem to mind it. It is
> just now starting to bloom--I'd be a lot more tolerant if it were just a
little
> prettier.  As for 'Joan Elliott'--this campanula has never been invasive
for
> me. In fact, just the opposite--I haven't been able to keep it, and not
just
> because the groundhogs keep eating it--my groundhogs seem partial to
> campanulas,  although not Cherry Bells. And it's a pretty blue one, not
like the pale
> pink of  Cherry Bells.
>
> Two other invasives I'm dealing with are a variegated mint and a perennial
> some call "perennial ageratum"--Eupatorium coelestinum. The Eupatorium
does
> look  just like a tall blue ageratum. It increases by rhizomes that look
very
> much  like those of the mint. It must increase by seed as well, because
here it
> has  jumped beds across a couple feet of lawn. Of the two, the mint is the
> easier one  to get rid of. I don't know where the mint came from, it just
suddenly
> showed up  in a bed one day. The Eupatorium was my own mistake.
> Bill Lee
> Z5a Cincinnati

> In a message dated 6/4/2005 10:25:26 A.M. Eastern Standard Time,
> 4042N15@nationalhearing.com writes:
>
> Is your  Campanula 'Joan Elliot' related to C. punctata 'Cherry Bells'?
That
> one is campaigning for use of the name "Mile a Minute".  We only  carried
it
> one year in our nursery and then got rid of it - so we  thought.  It's
still
> popping up a bit.  This year we are trying  one called C. 'Elizabeth'.  I
> don't believe it is a punctata, or even  a cross including punctata, but
it
> does have similar flowers.  We  shall see.
>

>
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