Thread: Japanese Knotweed x Russian Vine
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Old 14-10-2008, 07:13 PM posted to uk.rec.gardening
mogga mogga is offline
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Default Japanese Knotweed x Russian Vine
On Tue, 14 Oct 2008 11:46:46 +0100, Stewart Robert Hinsley
wrote:

Someone was expressing fear of Russian Vine hybridising with Japanese
Knotweed.

It does.

Fide Stace, most seed produced by Fallopia japonica in the UK is hybrid,
with either Fallopia sakhalinensis or Fallopia baldschuanica as the
pollen parent.

(Fallopia japonica spreads vegetatively; most plants in the UK are
octoploid females, so in the absence of males hybrid seed is produced
instead.)

Although seed of Fallopia japonica x baldschuanica is viable only one
hybrid has been recorded in the wild.


Can they not turn it into anything useful?
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