Sedums in Hong Kong
GreenRoof Asia have been involved in trials over the last year in Hong Kong with Sempergreen, the world’s biggest supplier of green roof vegetation blankets, and our sister nursery, Bluet.
GreenRoof Asia have been involved in a number of trials over the last year in Hong Kong with Sempergreen, the world’s biggest supplier of green roof vegetation blankets, and our sister nursery, Bluet Garden.
Sempergreen’s vegetation blankets are usually planted with ten to twelve different species of Sedum. Sedums are succulent stonecrops
that can store water in their leaves which means they are able to endure a widerange of climatic conditions. Another advantage to the Semprgreen system is that the Sedums come pre-grown and are delivered in an all-in-one rolled-up biodegradable blanket complete with coconut fibre carrier and specially designed lightweight soil substrate.
Sedum thrives in the Northern Hemisphere but, as we have sometimes seen, they can struggle in Hong Kong’s wetter-than-wet rainy season. So GreenRoof Asia and Bluet Nusery have got to work with teams from the Sempergreen parent company in Holland and from Sempergreen China, who grow their vegetation blankets under the clear blue skies of Yunnan, just outside Kunming, China’s City of Eternal Spring.
The trials have been working with different kinds of plant palettes, soil substrate and irrigation methods to find a blend that is perfect for Hong Kong’s often unforgiving humid climate and have been carried out on Hong Kong Housing Authority pilot green roof spaces and on an extensive test space at Bluet’s home nursery in Clearwater Bay and the results have been very encouraging. Which means we should be seeing a lot more Sedum rooftops in Hong Kong in the coming months and years?