In the following pages the writer attempts to set forth some of the facts gained during a brief investigation of the plum growing industry in this state, and presents in addition an epitome of the experience of many orchardists, some of them particularly interested in this branch of their calling.
At least two prominent factors have contributed in recent years to direct attention to plum growing. First, the introduction of the Japanese plums, and their marvellously rapid distribution; and second, the striking progress made by a few specialists in improving native plums. The fact that while the Japanese varieties, the native varieties, and the varieties of the older European (Domestica) type, though each possessing valuable characteristics, did not have in themselves all the qualities desired, yet intercrossed readily, encouraged and offered the plant breeder excellent material with which to work. In response to man’s effort but often accomplished only by natural agencies, intermediate forms have appeared, which though not perfect, yet in many instances are vastly superior to types which produced them,— in this way a race of hybrid plums has been developed and is now offered to a plum loving public. It is this plasticity of the plum which renders it alike interesting to the experiment station horticulturist and the enthusiastic fruit grower.
"Facts and opinions about plums and plum growing in Iowa.,"
Bulletin: Vol. 4
, Article 1.
Available at: https://lib.dr.iastate.edu/bulletin/vol4/iss46/1