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Author Topic: persicaria polymorpha weed rating  (Read 1742 times)

Stephen Vella

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persicaria polymorpha weed rating
« on: October 05, 2011, 11:49:14 AM »
I was amazed when I saw this Persicaria in the UK, especially the herbaceous borders.  For what I saw it didnt look to be weedy or over run the borders. It looked vigorous but is it weedy for some?

cheers
Stephen

Stephen Vella, Blue Mountains, Australia,zone 8.

Lori S.

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Re: persicaria polymorpha weed rating
« Reply #1 on: October 05, 2011, 01:11:40 PM »
I've never found it to be weedy, that is, either invasive or seeding around... actually, I have yet to find a seedling of it.
Lori
Calgary, Alberta, Canada - Zone 3
-30 C to +30 C (rarely!); elevation ~1130m; annual precipitation ~40 cm

Stephen Vella

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Re: persicaria polymorpha weed rating
« Reply #2 on: October 06, 2011, 04:54:16 AM »
well thats good to know but you are in a very cold zone. I wonder how it would behave in a warmer zone like 8 or 9?..any one ?
Stephen Vella, Blue Mountains, Australia,zone 8.

Lori S.

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Re: persicaria polymorpha weed rating
« Reply #3 on: October 06, 2011, 01:10:35 PM »
Read your other post... Yorkshire appears to be zone 8.
Lori
Calgary, Alberta, Canada - Zone 3
-30 C to +30 C (rarely!); elevation ~1130m; annual precipitation ~40 cm

Tim Ingram

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Re: persicaria polymorpha weed rating
« Reply #4 on: October 06, 2011, 04:08:08 PM »
It is no trouble with us and we are a good bit warmer than Yorkshire (though still ca. Zone 8). It is a really excellent strong perennial which does pretty well in our relatively dry summers and autumn. There is another smaller species of similar useful habit which suffers under the name P. dshawachischwilii (!) and was introduced some years ago by the Belgian Landscape Architect Denis Dujardin, who has grown many plants from Russian and other Eastern sources with the aim of finding good new species for garden use. The name shouldn't put gardeners off because it is an excellent plant.
Dr. Timothy John Ingram. Nurseryman & gardener with strong interest in plants of Mediterranean-type climates and dryland alpines. Garden in Kent, UK. www.coptonash.plus.com

annew

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Re: persicaria polymorpha weed rating
« Reply #5 on: October 06, 2011, 11:03:29 PM »
There is another smaller species of similar useful habit which suffers under the name P. dshawachischwilii
Bless you!
I'll have to look out for that one, I can't resist unpronounceable names.
MINIONS! I need more minions!
Anne Wright, Dryad Nursery, Yorkshire, England

www.dryad-home.co.uk

Stephen Vella

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Re: persicaria polymorpha weed rating
« Reply #6 on: October 07, 2011, 12:38:37 PM »
Well im surprised to hear that this Persicaria would have a very low weed rating, especially when it wont self seed.

Thanks you all for the info.

cheers
Stephen Vella, Blue Mountains, Australia,zone 8.

Afloden

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Re: persicaria polymorpha weed rating
« Reply #7 on: October 12, 2011, 01:38:10 AM »
 In 7 years of growing this in two different areas (Kansas Z5, Tennessee Z6-7) I have never seen a single seedling from this species. It is also non-rhizomatous which is a plus. It will persist from roots left in the ground and is a good means to propagate.

 The other species sounds good also and I would like to try it.
Missouri, at the northeast edge of the Ozark Plateau

Lesley Cox

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Re: persicaria polymorpha weed rating
« Reply #8 on: October 14, 2011, 08:40:31 PM »
Anne the name shouldn't be too hard if one relates it to dishwashing, (which seems unkind to the plant). ;D
Lesley Cox - near Dunedin, lower east coast, South Island of New Zealand - Zone 9

annew

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Re: persicaria polymorpha weed rating
« Reply #9 on: October 14, 2011, 10:43:26 PM »
 ;D
MINIONS! I need more minions!
Anne Wright, Dryad Nursery, Yorkshire, England

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