Baltic Garden - November 2012, VOL IV - VIPs Portal

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The fight against Japanese knotweed - (Fallopia japonica) Around the world, researchers are testing methods for effective eradication of Japanese knotweed. Among these, cultivation of native competing plant species, especially in riparian areas. Biological control, using Virginia wildrye and prairie cordgrass " One year of spraying and mowing was not sufficient to adequately suppress Japanese knotweed. By 37 months after sowing, only the multi-species riparian buffer mixture (RBM) had plant cover >20%, whereas cover for all other mixtures was 80% at 25 months after sowing and ≥50% after 37 months. Two years of Japanese knotweed suppression was necessary before native species mixtures could successfully compete against invasive recolonization." (Source: er.uwpress.org/content/30/3/192.abstract
10.3368/er.30.3.192 Ecological Rest. September 1, 2012 vol. 30 no. 3 192-199. "Planting Native Species to Control Site Reinfestation by Japanese Knotweed (Fallopia japonica)" - by R. Howard Skinner, Martin van der Grinten and Art E. Gover. ) Biological control, practiced by native Blackberries In the Baltic Garden, the native Blackberry has clasped its stems around the Japanese knotweed and limited its ability to spread. The Blackberries even send vigorous stems up in the center of the Japanese knotweed. See photos from the 9th December. In contrast to Japanese knotweed, Blackberry retains its green leaves throughout the winter - and therefore constitutes an important source of food for wildlife. The upper withered parts of Japanese knotweed normally provide support for new shoots in the spring. BUT not this time. The plan is to remove all stalks and cover the area with black plastic. Then roll out a thick layer of soil, with the possibility that Blackberries can take root in it. An alternative solution is to let the grass spread, so the area instead becomes an extension of the garden-lawn. As photo from 18th September shows, the Blackberries on their own are doing the arm wrestling with the Japanese knotweed. There are no other plants to be seen in the frigid darkness, which the Japanese knotweed creates during its summer growth. The fact that Japanese knotweed shadows most other plants to death - has placed it on the list of 100 of the World's Worst Invasive Alien Species (the Global Invasive Species Database list - www.issg.org/database/species/search.asp?st=100ss )
Page 2 and 3: First Edition Baltic Garden - Novem
Page 4 and 5: "Flowers bouquet is now on the shop
Page 6 and 7: CONTENTS: Indoor Houseplants in Bal
Page 8 and 9: purchased in the autumn was moved i
Page 10 and 11: 20th November. Pot Rose lies in bed
Page 12 and 13: According to the photo from the 20t
Page 14 and 15: Pot Primroses - (Primula vulgaris)
Page 16 and 17: All though I enjoyed cultivating th
Page 18 and 19: Der er rigeligt grundlag for eksper
Page 20 and 21: Kornblomst (Centaurea cyanus) Etår
Page 22 and 23: Vinterdæk med grøngødning Før t
Page 24 and 25: Spredning af muldvarpeskud Har man
Page 26: Oprydningen efter vinteren i 2009/1
Page 31 and 32: Tempeltræ - (Ginkgo Biloba) Tempel
Page 33 and 34: - "Nye hårdføre hortensiaer." Af

Baltic Garden - November 2012, VOL IV - VIPs Portal

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