Many plant lovers are also plant killers: they never quite find the right mix of light and water to keep their houseplants alive. Weyerhaeuser, the Tacoma, Wash.-based forest-products company, believes this problem may now be solved. Last week the firm began selling plants, trees and flowers that have been put into a kind of permanent "sleep." Weyerhaeuser owns the North American rights to the treatment, in which nontoxic preservatives are injected into the plants. The process, which also permits the use of dyes to transform green plants into red ones, has been available on a limited basis in Europe since the...
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