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#1
29-07-2013, 08:05 PM
posted to uk.rec.gardening
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Polygonum
Looking for a name for a polygonum I have I came across this one
http://plantdelights.com/Catalog/Cur...ail/05427.html Defiantly an "I want one" David @ a sunny side of Swansea Bay What was I looking for? http://i240.photobucket.com/albums/f...psea27db37.jpg |
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#2
29-07-2013, 08:14 PM
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Polygonum
On 2013-07-29 20:05:14 +0100, David Hill said:
Looking for a name for a polygonum I have I came across this one http://plantdelights.com/Catalog/Cur...ail/05427.html Defiantly an "I want one" David @ a sunny side of Swansea Bay What was I looking for? http://i240.photobucket.com/albums/f...psea27db37.jpg Do you have P. Red Dragon? It may just be my favouritebecause of the colour and the beautiful leaf marking. -- Sacha www.hillhousenursery.com South Devon www.helpforheroes.org.uk |
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#3
29-07-2013, 09:57 PM
posted to uk.rec.gardening
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Polygonum
On 29/07/2013 20:14, Sacha wrote:
On 2013-07-29 20:05:14 +0100, David Hill said: Looking for a name for a polygonum I have I came across this one http://plantdelights.com/Catalog/Cur...ail/05427.html Defiantly an "I want one" David @ a sunny side of Swansea Bay What was I looking for? http://i240.photobucket.com/albums/f...psea27db37.jpg Do you have P. Red Dragon? It may just be my favouritebecause of the colour and the beautiful leaf marking. Yes, it is a goo one. |
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#4
29-07-2013, 10:13 PM
posted to uk.rec.gardening
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Polygonum
On 29/07/2013 20:05, David Hill wrote:
Looking for a name for a polygonum I have I came across this one http://plantdelights.com/Catalog/Cur...ail/05427.html I thought that it looked suspiciously similar to Japanese Knotweed (Fallopia japonica). It turns out that Polygonum cuspidatum is a synonym of Fallopia japonica. Red flowers suggests that it's a hybrid, rather than pure Japanese Knotweed. (And the seed parent may also be a hybrid - between Japanese and Giant Knotweeds.) Defiantly an "I want one" David @ a sunny side of Swansea Bay What was I looking for? http://i240.photobucket.com/albums/f...psea27db37.jpg -- Stewart Robert Hinsley |
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#5
29-07-2013, 10:23 PM
posted to uk.rec.gardening
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Polygonum
On 29/07/2013 20:05, David Hill wrote:
Looking for a name for a polygonum I have I came across this one http://plantdelights.com/Catalog/Cur...ail/05427.html Defiantly an "I want one" David @ a sunny side of Swansea Bay What was I looking for? http://i240.photobucket.com/albums/f...psea27db37.jpg I thought I recognised the name, David; one of many synonymous tags for the dreaded Japanese Knotweed. Be careful what you wish for ... :~(. https://en.wikipedia.org/wiki/Japanese_knotweed Sorry to be the bearer of bad news. -- Spider from high ground in SE London gardening on clay |
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#6
29-07-2013, 10:33 PM
posted to uk.rec.gardening
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Polygonum
On 29/07/2013 22:13, Stewart Robert Hinsley wrote:
On 29/07/2013 20:05, David Hill wrote: Looking for a name for a polygonum I have I came across this one http://plantdelights.com/Catalog/Cur...ail/05427.html I thought that it looked suspiciously similar to Japanese Knotweed (Fallopia japonica). It turns out that Polygonum cuspidatum is a synonym of Fallopia japonica. Red flowers suggests that it's a hybrid, rather than pure Japanese Knotweed. (And the seed parent may also be a hybrid - between Japanese and Giant Knotweeds.) Meaning that a monster like Japanese Knotweed could come from seed, as well as thuggish roots. Shiver. Defiantly an "I want one" David @ a sunny side of Swansea Bay What was I looking for? http://i240.photobucket.com/albums/f...psea27db37.jpg -- Spider from high ground in SE London gardening on clay |
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#7
29-07-2013, 10:50 PM
posted to uk.rec.gardening
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Polygonum
On 29/07/2013 22:33, Spider wrote:
On 29/07/2013 22:13, Stewart Robert Hinsley wrote: On 29/07/2013 20:05, David Hill wrote: Looking for a name for a polygonum I have I came across this one http://plantdelights.com/Catalog/Cur...ail/05427.html I thought that it looked suspiciously similar to Japanese Knotweed (Fallopia japonica). It turns out that Polygonum cuspidatum is a synonym of Fallopia japonica. Red flowers suggests that it's a hybrid, rather than pure Japanese Knotweed. (And the seed parent may also be a hybrid - between Japanese and Giant Knotweeds.) Meaning that a monster like Japanese Knotweed could come from seed, as well as thuggish roots. Shiver. The British populations are reputedly nearly 100% female, so there's not much opportunity for setting seeds, but it is known to produce hybrids with Russian Vine and Giant Knotweed. Defiantly an "I want one" David @ a sunny side of Swansea Bay What was I looking for? http://i240.photobucket.com/albums/f...psea27db37.jpg -- Stewart Robert Hinsley |
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#8
30-07-2013, 04:08 PM
posted to uk.rec.gardening
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Polygonum
On 29/07/2013 22:50, Stewart Robert Hinsley wrote:
On 29/07/2013 22:33, Spider wrote: On 29/07/2013 22:13, Stewart Robert Hinsley wrote: On 29/07/2013 20:05, David Hill wrote: Looking for a name for a polygonum I have I came across this one http://plantdelights.com/Catalog/Cur...ail/05427.html I thought that it looked suspiciously similar to Japanese Knotweed (Fallopia japonica). It turns out that Polygonum cuspidatum is a synonym of Fallopia japonica. Red flowers suggests that it's a hybrid, rather than pure Japanese Knotweed. (And the seed parent may also be a hybrid - between Japanese and Giant Knotweeds.) Meaning that a monster like Japanese Knotweed could come from seed, as well as thuggish roots. Shiver. The British populations are reputedly nearly 100% female, so there's not much opportunity for setting seeds, but it is known to produce hybrids with Russian Vine and Giant Knotweed. Defiantly an "I want one" David @ a sunny side of Swansea Bay What was I looking for? http://i240.photobucket.com/albums/f...psea27db37.jpg Yes, Stewart, I'd read about the RV/GK hybrid, but it seemed likely that two parents of vigorus knotweed might produce seed. I hope not. -- Spider from high ground in SE London gardening on clay |
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#9
30-07-2013, 04:20 PM
posted to uk.rec.gardening
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Polygonum
On 30/07/2013 16:08, Spider wrote:
On 29/07/2013 22:50, Stewart Robert Hinsley wrote: On 29/07/2013 22:33, Spider wrote: On 29/07/2013 22:13, Stewart Robert Hinsley wrote: On 29/07/2013 20:05, David Hill wrote: Looking for a name for a polygonum I have I came across this one http://plantdelights.com/Catalog/Cur...ail/05427.html I thought that it looked suspiciously similar to Japanese Knotweed (Fallopia japonica). It turns out that Polygonum cuspidatum is a synonym of Fallopia japonica. Red flowers suggests that it's a hybrid, rather than pure Japanese Knotweed. (And the seed parent may also be a hybrid - between Japanese and Giant Knotweeds.) Meaning that a monster like Japanese Knotweed could come from seed, as well as thuggish roots. Shiver. The British populations are reputedly nearly 100% female, so there's not much opportunity for setting seeds, but it is known to produce hybrids with Russian Vine and Giant Knotweed. Defiantly an "I want one" David @ a sunny side of Swansea Bay What was I looking for? http://i240.photobucket.com/albums/f...psea27db37.jpg Yes, Stewart, I'd read about the RV/GK hybrid, but it seemed likely that two parents of vigorus knotweed might produce seed. I hope not. In the nursery description they do say "When grown in full sun, the leaves take on a reddish cast. In September, the clumps are topped with terminal and axillary flower stalks of short red spikes...very attractive, and no seedlings or running in 10+ years" |
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