Every plant has specific requirements, and although most don't appreciate wet, boggy soil, some prefer it. Orchids, ferns, certain irises and some carnivorous plants enjoy wet soil. To create your own bog garden, dig down about 12", and place a plastic liner in the hole. Fill it with crushed granite, river sand and peat moss. Or fill an unused garden pond to achieve the same result. Trough gardens originated in England, where gardeners discovered that a wide range of alpine plants could be grown in lightweight concrete containers, which help keep roots cool. The soil used in trough gardens is light and crumbly and drains rapidly. Troughs are excellent for collections of hard-to-grow miniature plants.
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