INTRODUCTION. 9 
As the poet Cowper says in one of his charming metrical 
essays, ‘‘ Who loves a garden loves a greenhouse too”’; but 
the mere possession of a greenhouse, however excellent in 
construction, will not alone enable one to enjoy an abundance 
of fragrant blossoms and fine fruit, the great secret of 
success in all indoor horticulture being constant and untiring 
attention and care, with some amount of experience and 
judgment. Yet the possession of a moderate-sized house or 
two not only greatly extends the season of enjoyment in the 
garden, but also enables the out-door department to be 
‘stocked in a much more varied and pleasing manner. 
