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Are any of these invasive?

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Postby Lindamct » May 05, 2008 9:28 am

Thanks BBQ. Now I just got to find it :)
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Postby Melroche » May 05, 2008 8:48 pm

Thank you..I'll stay away from the [dis]obediant plant. The Nepeta's not bad in your garden Sharon? That makes me happy because it smells delightful. :wink:
You must be the change you wish to see in the world. by Mahatma Gandhi.
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Postby patty » May 05, 2008 9:25 pm

Like Murphy I find the white obedient less invasive then the pink. Both plants will grow from a very small piece of root that is left after removing a clump. They like a moist soil, so will be less invasaive in a dryer sandy type soil.

The others on your list I wouldn't say are invasive, but perhaps prolific self seeders. I'm not personally familiar with the salvia volcano but it is gorgeous.

I was only gardening a few years, when I came to the realization that most offers of plants from other gardeners, or church sales were either of these types lol.
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Postby Lizcordysmum » May 05, 2008 9:56 pm

My Chocolate Mint was beautifully behaved for two years...I relished it.

This year, I find runners doing very well out in the grass. Smells pretty when you walk on it A LOT.

If you really like those plants, you could always put them in black pots and bury them? I have potted and buried every other mint in my garden, and they behave well...I lift them out every once in awhile to burn the roots off.
Cordy's Mum, Liz
Rain Coast, BC Zone 7b/8a


Nae words, nae quarrel
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Postby butterfly » May 05, 2008 11:09 pm

Someone gave me the chinese lantern plants one time years ago

They didn't survived the winter so I never saw them again

Lilly of the valley didn't survive for me either

Obedient plants didn't multiply for me either. I have the almost the same amount I had 10 years ago but I did plant the variegated kind last year. 2 plants. No sign of them yet

Craig sent me seeds long long time ago of Obedient plant. I still have 3 plants left.

So what gives, when they mulitply for everyone else but disappear for me???
Cheers Butterfly




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Having both - is a blessing."--Donna Hedges
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Postby DonnaZn2SK » May 06, 2008 1:11 am

I've grown most of the plants listed...here's my 2 cents:

The zebrina hollyhock is invasive if you are not meticulous about deadheading; it will seed everywhere, and the long taproot will have you cursing as you try to yank it out. You only ever have to plant this one once since it will reseed itself every year...

The maltese cross is the same...you need to deadhead, but it is much simpler to yank out unwanted plants.

The obedient plant (with its square stem) is a member of the mint family and it can get out of control if not contained. That said, I've had it in my garden for years and I've never felt like it's had the run of the place.

I only have May Night salvia and it has not been invasive.
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Postby Sharon Bryson » May 06, 2008 8:32 am

The Nepeta's not bad in your garden Sharon?

Nepeta is one of my favourite plants....it starts very early in the spring, and has a nice long bloom period.
Image
If sheared a bit, it will rebloom in the late summer/fall.
It seeds off very sparingly(probably because it gets a hair cut).
I like it planted as an underplanting for Roses.
Cheers
Sharon
Antigonish, NS Zone 5b

"The fairest thing in nature, a flower, still has its' roots in earth and manure."
- D.H. Lawrence


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Postby Sandy Zone 3b » May 06, 2008 11:13 pm

I grew the white from seed a couple of years ago, I didn't find it very invasive. In fact I was hoping to get a few larger patches going in the flowerbed as it quite showy amongst all the other perennials such as Echinacea's,Monarda bee balm, Veronica, and Sedums to name a few.
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Postby Melroche » May 09, 2008 3:51 pm

That's a good idea Liz. Maybe that's what I'll do. What do you mean by burning off the roots...literally? Do you do this instead of repotting?
You must be the change you wish to see in the world. by Mahatma Gandhi.
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Nepeta!! That's what it is! Thanks.

Postby evepet » May 09, 2008 4:11 pm

In reading this thread I finally found out the name of this flower. I've been admiring it all spring in various flower beds around Peterborough, but didn't know it's name. It's really pretty. I like the way the little blue florettes stand up so perkily. :)
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