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About product and suppliers:
        Alibaba.com offers 1,908 growing medium products. About 15% of these are other garden supplies, 1% are air filter, and 1% are valves. 

A wide variety of growing medium options are available to you, such as coconut peat, peat moss. You can also choose from block, chip, and powder. As well as from ce, bv. And whether growing medium is free samples, or paid samples. 

There are 1,878 growing medium suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Argentina, which supply 85%, 9%, and 1% of growing medium respectively. 

Growing medium products are most popular in Southeast Asia, North America, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 150 with Other, 135 with ISO9001, and 86 with FSC certification.