By 1923 California produced 90% of the raisin in the US and 60% of those throughout the world. The seed ‘Muscat of Alexandria’ was the first major raisin variety grown in California, but this was soon to change with the introduction of a seedless variety that eventually dominate the raisin industry.
Raisins have since 1929 met severe competition in foreign markets and exports have been declining from the peak reached during the marketing season of 1928-29.
History of commercial production of raisins