Orchids have become Britain 's favourite house plant but die within weeks . Moth orchids are easier to nurture and can flourish for years . With More than 22,000 species , orchids ' needs differ widely .
Orchids have become Britain 's favourite house plant but die within weeks . Moth orchids are easier to nurture and can flourish for years . With more than 22,000 species , orchids ' needs differ widely .