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Alien Invasive Plant of the Month

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Alien Invasive Plant of the Month ALIEN INVASIVE PLANT OF THE MONTH Scientific Name: Hedychium spp. Common Name: Ginger Lily, Garland Flower, Kahili Ginger Zulu Name: uJinja Invasive Status: CATEGORY 1b – Invader and by Law must be destroyed Countries of Origin: Native to the moist tropical forests of Central & South Eastern Asia. Toxicity Status: Unknown Flowers: In spikes of 300 – 350 mm long. H. garderianum : Kahili Ginger Lily / Yellow flowers & red stamens. H. coccineum : Red Ginger Lily / Red flowers & pink stamens. H. Flavescens : Yellow Ginger Lily / Yellow flowers & sometimes reddish-yellow at the base. H. coronarium : White Ginger Lily / White flowers & sometimes yellow at the base. Fruits: Capsules H. garderianum H. coccineum H. flavescens H. coronarium Hedychium spp. / Ginger Lily, Garland Flower, Kahili Ginger, is a genus of perennial plants native to the Himalayas and tropical Asia, commonly growing to between 120 and 180 cm tall and the leaves can grow up to 40 cm long. They are very attractive ornamental plants and it was also for this reason that they were introduced into South Africa. The flowers of the various species have different colours and some hybrids have variegated leaves. Hedychium garderianum has been recognised as one of the World’s 100 Worst Invasive Alien Species. It belongs to the same family as edible ginger (Zingiber officinale), but has no culinary value. Humans are one of the main dispersal agents and due to it having sticky seeds, are easily spread by birds and mammals, while rhizomes crowd out native seedlings by forming dense mats and as each rhizome adds at least one segment per season depending on climatic and light conditions, it can quickly colonise large untended areas. Re-infestation may occur from spreading by neighbouring plants, or dormant seeds disturbed by the removal of the original tuber clump as seeds remain viable for 2–4 years. It is particularly virulent and invades forests, plantations, river and stream banks, as well as moist shaded areas. This plant species poses a serious threat to our wetlands, riverine areas, biodiversity and the environment in general. For further information and reading on the matter, you are invited to refer to the following: Alien Weeds and Invasive Plants by Lesley Henderson. A Field Guide to WILD FLOWERS KWA-ZULU NATAL and the Eastern Region by Elsa Pooley. The Complete Field Guide to TREES of NATAL, Zululand & Transkei by Elsa Pooley. Pooley’s TREES of Eastern South Africa – A Complete Guide by Richard Boon. Problem Plants and Alien Weeds of South Africa by Clive Bromilow. Invasive Alien Plants in KwaZulu-Natal Management and Control: A Wildlife Handbook, produced by WESSA-KZN. Also a few websites of interest: http://www.invasives.org.za/legislation.html http://www.arc.agric.za/home.asp?pid=1031 http://www.arc.agric.za/home.asp?pid=1&toolid=2&sec=1001 (For SAPIA news) http://www.sanparks.org/parks/kruger/conservation/scientific/ff/alien_biot a/layout.pdf http://en.wikipedia.org/wiki/Invasive_species http://biodiversityadvisor.sanbi.org/ http://www.oocities.com/wessaaliens/species/species.htm http://salbu.co.za/dkoa/NEMA_Weeds_050429.html http://www.plantzafrica.com/miscell/aliens2.htm http://www.agis.agric.za/wip/ http://www.dwaf.gov.za/wfw/ http://www.penningtonconservancy.org.za/invasivealienpla.html http://www.durban.gov.za/durban/services/development-planning-and- management/epcpd/documents/beautiful%20but%20dangerous%20Poste r%20Aliens%20A4.pdf http://www.karkloofconservation.org.za/index.php/conservation- issues/alien-plants.htm https://cabiinvasives.wordpress.com/2011/02/01/wild-gingers- %E2%80%93-beastly-beauties/ http://www.vumba-nature.com/conservation.htm http://www.europe-aliens.org/pdf/Hedychium_gardnerianum.pdf Should you reside in Mtunzini or surrounds and would like to contact someone from the Mtunzini Conservancy for further advice, or assistance in dealing with Alien Invasive Plants, or assistance in identifying which are Alien Invasive Plants, or which plants are soon to be promulgated as Alien Invasive Plants, please contact anyone of the following persons, who will gladly assist you: Mike Butler - 083 654 3010 Doggy Kewley - 083 630 1839 Jim Chedzey - 083 326 0698 For advice on alternative indigenous plants which are best suited to be planted in the space that has been cleared of Aliens, ask any of the persons above, or: Bruce Hopwood - 083 301 2958 The Mtunzini Conservancy is a non-profit Section 21 Company that is continually striving for the betterment of our environment. PS – Should you either reside in, or are due to visit Mtunzini, please take the time to visit & view the Mtunzini Conservancy’s Alien Invasive Plant of the Month display stand located on the pavement outside the entrance to MTUNZINI SPAR, to view a growing specimen of the Hedychium garderianum /Hedychium coccineum / Hedychium flavescens /Hedychium coronarium / Ginger Lily, Garland Flower, Kahili Ginger plant. .
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