Im­prove your air

Gardeners' World - - Garden More & Feel Better -

Plant­ing trees and hedges (out­side); grow­ing house­plants (in­side)

WHY NASA, when ex­per­i­ment­ing with plants to clean air in space sta­tions, found that one plant per 100 sq. feet was enough to re­duce in­door pol­lu­tants such as formalde­hyde and car­bon monoxide. Spathiphyl­lum ( peace lily) ab­sorbs the widest range of chem­i­cals. Out­side, ur­ban trees like holm oaks ab­sorb par­tic­u­lates and ni­tro­gen diox­ide. Dr Alis­tair Grif­fiths says care­ful plant­ing max­imises the ef­fect. “Plant in dif­fer­ent lay­ers – trees first, then shrubs,” he says. “And don’t have a fence; plant a hedge in­stead.”

DID YOU KNOW? Of­fice work­ers who have house­plants on their desks are 15% more pro­duc­tive than those who don’t.

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