An encyclopaedia of annual and biennial garden plants ; a guide for the amateur, professional, and commercial grower to the more common and rarer species of ornamental plants grown in gardens as annuals and biennials, with notes on their cultivation both in the open and under glass, together with preliminary chapters describing their general characteristics, the recognition and control of pests and diseases to which they are known to be subject, and such other information as may be of value to anyone intending their cultivation.