This section is from the book "Commercial Gardening Vol2", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
The common British Primrose can hardly be said to be cultivated for market, although thousands of bunches of blossom are sold every April. The blooms are picked by countryfolk in the woods and sent up by agents to the salesmen. Florists and street sellers do a good trade in the blooms for the time being.
A trade also is done in the plants in early spring and autumn, together with the Cowslip (P. veris) and the Oxlip (P. variabilis). The "blue" Primroses, raised by the late Mr. G. F. Wilson, of Weybridge, are dealt in by hardy-plantsmen, and are valuable for rock gardens, woodlands, etc.