This was China's first experiment on peony seeds under weightless conditions, said Sun Jingyu, an expert with Caozhou Peony Garden in Heze

"The peonies start blooming nearly two years earlier than the ordinary breeds," Sun said.

"They grow more vigorously, with thicker stems and obvious heredity genetic characteristics."

According to the expert, Shenzhou-III was carrying 200 selected peony seeds and they were all sowed and carefully cared for by peony experts in the garden since 2003.

As a result more than 30 peony seeds survived.

As one of the country's major peony planting areas, Heze cultivates an area of more than 5,000 hectares of peonies in 1,100 plus species.

Heze Mayor Zhao Runtian said the city has become a base for peony production, observation, scientific research and trade, with more than three million individual trunks of peonies being exported to more than 20 countries and regions each year.

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